These motors do not have any consistent year-to-serial scheme. Mercury ceased publishing this information after the 1996 model year. There is no way to find the model year of motors with significantly higher. serial numbers than listed in these guides. There is NO serial-to-year cross-reference chart for 1997 and later motors.What Should The Compression Be On An Outboard? Compression numbers are going to vary greatly, depending on certain variables. Things like whether the engine is a two-stroke or a four-stroke. How old is the engine? What brand and horsepower is the engine? Then there are also things that you wouldn't commonly think about.View and Download Mercury 6 service manual online. 6 outboard motor pdf manual download. Also for: 8, 15, 9.9, 10. ... Page 11 SPECIFICATIONS Propeller Information Chart - 6 HP Wide Open Throttle RPM: 4000-5000 Recommended Transom Height: 15 , 20 , 25 Right Hand Rotation Standard Gear Reduction: 2:1 Diameter Pitch No. Of Material …Yamaha Outboard Compression Chart. Mercury Marine Pro XS: A Simple Improvement ... Mercury Outboard Compression. The lightest weight outboard in its class ...Mercury Parts Catalog. Find the right parts for your Mercury® or MerCruiser® engine here. Search by serial number to see detailed engine diagrams and part numbers, then contact your local authorized Mercury Marine dealer to place your order. You can also browse by model, but we strongly recommend using your serial number to ensure you find ...The ultimate in flexibility and functionality. All key engine functions. Right there in front of you. Multi-color LCD screen provides you with critical data on dozens of engine and boat functions. Temperature, depth, alarms, rpm, speed, water pressure, fuel flow, and much more. Perfect for a wide range of boats, both outboard and sterndrive ...How Much Fuel Does a 25-30 HP Mercury Outboard Use? You can expect the fuel consumption of 25-30 HP Mercury outboards to be roughly 2.3-3.0 gph at WOT and 1.1-1.5 gph at 4000 RPM. These motors share the same 500cc, EFI, inline-3 engine, and lower unit, except that the F25 comes with restricted engine power.THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial number is ...What Should The Compression Be On An Outboard? Compression numbers are going to vary greatly, depending on certain variables. Things like whether the engine is a two-stroke or a four-stroke. How old is the engine? What brand and horsepower is the engine? Then there are also things that you wouldn't commonly think about.Nov 5, 2020 · 2002 Mercury Outboard 150 hp Salt water series 2 stroke engine. Pressure test was performed with hot and cold engine using two different tester kits. One fr... 115ELPT EFI 4-Stroke. This 2004, 115 hp Mercury is made for saltwater. This outboard engine weighs approximately 386 pounds. It has 4 cylinders. The pistons have a 106.2 displacement. The bore width is 3.11" and the stroke length is 3.50". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the ...If you are in the market for a new Mercury outboard motor, finding a reliable dealer near you is crucial. A reputable dealer can not only help you choose the right outboard for your needs but also provide ongoing support and maintenance.Mercury's proven TwoStroke engines deliver easy starting, gutsy performance, and great all-round reliability. Across the range you’ll find an array of features that help keep your boating experiences more enjoyable and trouble-free. Features such as largest engine capacity displacement, giving you more low-end thrust, advanced carburetor ...Outboard Motor; 50; Mercury 50 Manuals ... Propeller Information Charts. 10. Mercury/Mariner 40 HP (3 Cyl.) 10. Mercury/Mariner 50 HP (3 Cyl.) 11. ... Compression Check. 43. Trim Tab Adjustment. 43. Analysis. 44. Cylinder Leakage Testing. 44. Cleaning & Painting Aluminum Propellers & Gear Housings. 45.MODEL YEAR CHART. THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year.Likewise, the Merc 350hp motor is not free of problems. In this article, I am going to show you the 7 most common problems with the Mercury verado 350 and possible fixes. Problems. Reasons. Wiring Issues. Bad ground wire. Engine Surge and Running Temperature Issue. temp to trigger guardianwire problemvinyl fuel line.E-TEC Direct Injection with stratified low RPM combustion mode. Alternator Output. 133 Amps Total / 50 Net Dedicated. Steering. Remote (Tiller accessory) Trim Method. Trac-1 Power Trim and Tilt. Shaft Length - in (mm) 20 (508)7. 7. 2010 ... APPLICATION CONTINUED ON NEXT PAGE ➂ Chart is for referencing only, pistons received will be 2 ring version ... MERCURY OUTBOARD LOWER UNIT ...5.7L V10 Mercury® 5.7L V10 350 and 400hp Verado® outboards continue the legendary Verado engine family’s legacy of providing premium marine performance. With the strength of the outboard segment's first V10 naturally aspirated powerhead, they deliver extraordinary power and capabilities so you can confidently explore beyond the horizon. Take command of the water with innovative SmartCraft ...Genuine Mercury Marine engines and parts for over 40 years. Great prices, fast shipping from the largest factory authorized Mercruiser and Mercury parts dealer in the US. ... 2019 Mercury Marine implemented a policy that requires all factory authorized dealers to set a minimum selling price for Mercury Outboards. ... Use the boxes on the top ...Vertigo. 1956 posts · Joined 2012. #4 · Jan 25, 2014. The compression you should see will vary with the make and model of the motor. 100psi would be very low for most normally aspirated motors. I see 155 psi on older Johnsons and Evinrudes, 130 is typical on many Yamahas. Also, some motors will, by design, have different compression in ...Engine Details. Built to take you almost anywhere and nearly 20 pounds lighter than its closest competitor, it's an incredibly fast high-output 150hp FourStroke outboard. Great for bass, offshore fishing, and runabout boats.Mercury Racing’s new 450R is an outboard powerhouse. Courtesy Mercury Marine. “The 400R starts out strong, but then seems to sort of run out of breath as you build up speed,” says Mike Griffiths, who was manning an MTI 340X cat. “The 450R’s torque starts early and stays linear. This motor pulls hard all the way to wide-open throttle.”.Just doing a quick compression test on a 1985 115hp Mercury Outboard Motor. Be sure to post any comments or questions!If you liked this video and it helped ...35 amp / 441 watt with water-cooled voltage regulator. Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. NMMA Certified FCW SAE 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes.THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial number is ...125ELPTO. This 125 horsepower Mercury outboard, manufactured in 2003, is a saltwater model. The engine weight is recorded at 348 lbs. This is a 4 cylinder model. The displacement for the pistons is 113. The bore for this outboard is 3.5 inches and the stroke is 2.93 inches. This engine has power steering and a electric-type starter.Man, I did a compression test today on my 2000 Mercury Optimax 200hp with the throttle wide open, warm engine, and a - Answered by a verified Marine Mechanic. We use cookies to give you the best possible experience on our website. ... I have a mercury outboard 402 thunderbolt 1972 s/n 340634.Hey so compression on the motor Are 1-130 2-150 3-150 4-125 What are your guys thoughts on this? are they good? everywhere i check i get a ...ProKicker 9.9-25hp. Quiet Performance. Precise Speeds. Complete Control. Mercury ProKicker™ outboards enable precision boat control, even in the toughest fishing conditions. Quiet, smooth and efficient, they make long hours of trolling more productive – and more enjoyable.It has a Mercury 150, the picture looks like it says Black Max on the side. I have not seen the boat in person yet, only pictures. The dealer says one cylinder was "scorched" resulting in excessive cylinder leakage and low compression. Not sure what scorched means. My question is what is everyones opinion on this outboard?SeaPro outboards with the Advanced MidSection (standard on V10 350hp; available for V8 300hp) are compatible with Mercury Joystick Piloting for Outboards (JPO) for multi-engine applications as well as the latest Mercury Electric Steering system. JPO provides fingertip control to move forward, sideways or even rotate in place for easy, confident ...You are here:Home > Mercury Outboard Models > 1967 - 1969: Choose a sub category: Merc 39: Merc 40: Merc 60: Merc 60J: Merc 75: Merc 110: Merc 200: Merc 350: Merc 500: Merc 650: Merc 800: Merc 950SS: Merc 1000: Merc 1000BP: Merc 1000 Super BP: Merc 1100SS: Merc 1250: Merc 1250 BP: Merc 1250 Super BP: Kiekhaefer Mercury …The Pro Max 300X outboard from Mercury Racing cranks out more than 300 horsepower. Rated at more than 300 horsepower, Pro Max 300X is the most powerful outboard on the market. The outboard has an all-new powerhead, from its cylinder block to its high-flow fuel-injection system. The block features high-performance cylinder porting …– The new Mercury Racing 450R outboard is purpose-designed for the high-performance disciple craving unrelenting power. Steeped in Mercury Racing DNA, the 450R features a 4.6-liter V8 FourStroke powerhead boosted by an exclusive Mercury Racing supercharger to produce 450 peak propshaft horsepower and 40 percent higher torque …Learn More About Your Boats Systems By Joining The Born Again Boating Academy! https://www.bornagainboating.com/Get Your Born Again Boating Clothing! https:/...ries outboards feature Suzuki Precision Control digital control system, and Suzuki Selective Rotation for multi-engine applica-tions. . DF150A/175A/200A and DF150AP/175AP/200AP LIGHTWEIGHT DESIGN – HEAVYWEIGHT POWER 1 l 175 cu.in. in-line four-cylinder “Big Block” engine and a high performance 10.2-to-1 compression ratio deliver ample powerries outboards feature Suzuki Precision Control digital control system, and Suzuki Selective Rotation for multi-engine applica-tions. . DF150A/175A/200A and DF150AP/175AP/200AP LIGHTWEIGHT DESIGN – HEAVYWEIGHT POWER 1 l 175 cu.in. in-line four-cylinder “Big Block” engine and a high performance 10.2-to-1 compression ratio deliver ample powerEvinrude Compression. Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression.SeaPro™ 200-350hp SeaPro high-horsepower outboards feature heavy-duty components designed to work as hard as you do, with unmatched corrosion resistance to go wherever the task takes you. Verado® Verado 250 - 300hpMercury Parts Catalog. Find the right parts for your Mercury® or MerCruiser® engine here. Search by serial number to see detailed engine diagrams and part numbers, then contact …Mercury's proven TwoStroke engines deliver easy starting, gutsy performance, and great all-round reliability. Across the range you’ll find an array of features that help keep your boating experiences more enjoyable and trouble-free. Features such as largest engine capacity displacement, giving you more low-end thrust, advanced carburetor ...40-60hp Held to a Higher Standard. There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance. Enhanced fuel injection (EFI models) for boosted efficiency.60 amp / 756 watt (Belt-Driven) Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. Mercury FourStroke Oil 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes. Held to a Higher Standard. There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance. Enhanced fuel injection (EFI models) for boosted efficiency. A robust electrical system with a high-output alternator to …16. 1. 2004 ... Hi I am gonna test a outboard mercury 200 from 1987 tomorrow. What is normal compression on that engine? (warm, and with the throttle full ...1 Nov 11, 2009 #1 I am looking at buying a merc outboard - 1997 250 hp EFI with an hour meter showing 178 hours. Compression check shows 100,105,100,110,105,100. What should this motor have for compression with these low hours, or am I being scammed and the motor really has 500 or more hours??? Thanks Bifflefan Commander Joined May 27, 2009THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial number is ...New life for old outboards " your trusted source since 1999 " Cart 0. Search. Menu Cart 0. Home Mercury Parts +-Fuel Systems; Magneto, Battery ignition; Gaskets - Individual ... Merc Spec Chart; Links; Vintage Parts Miscellaneous - all makes; Vintage literature; New life for old outboards " your trusted source since 1999 "Home;Go to the key and turn the engine over for 3 to 5 seconds. It doesn’t matter whether you turn it over for 3 or 5 seconds. What matters is that you turn it over for a consistent time on each of the cylinders. Go back to the compression gauge, write down the reading, and release the pressure (generally, there’s a button on the gauge or hose ... THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial …Mercury outboard wont go full throttle View and Download Mercury 50 4-Stroke manual online. 50 4-Stroke outboard motor pdf manual download. Also for: 40 4-stroke, 60 4-stroke. Mercury outboard compression chart Diagnostic Tools & Software. Marine Boat Manuals. Motor Carriers. Outboard / Inboard Motor Flushers. Parts Cleaners & Towels ...Kiekhaefer Mercury Outboard Motors, "K" Models 1940-1952. Model. Designation. Horse-power. Serial Number Range. Year. K12. Install the compression tester. Install the compression tester where the spark plug would normally be. Be sure to get a good seal between the tester's o-ring and your tool. 3. Pull on the starter rope. Pull the starter rope a few times to get an accurate compression reading. Normal compression is between 90 and 110 psi.Normal atmospheric pressure is 14.7 psia at sea level. 9 x 14.7 is 132 psia or 118 psig, the latter being what your compression gauge reads. A compression reading around 200 is something you might see in a diesel engine, but not in a normally-aspirated 4-stroke gas engine designed for 87 octane fuel.Jul 7, 2011 · but. 6hp Evinrude = great compression would be >85 to 90psi. Most of the Evinrude/Johnson motors 5.5hp to 6hp from 1950’s to late 1970’s had decent to good compression range from 60psi to 80psi. Then again, most of the motors from that era are found to be running fine with psi ranges from 60psi to 70psi. Jul 7, 2011 · but. 6hp Evinrude = great compression would be >85 to 90psi. Most of the Evinrude/Johnson motors 5.5hp to 6hp from 1950’s to late 1970’s had decent to good compression range from 60psi to 80psi. Then again, most of the motors from that era are found to be running fine with psi ranges from 60psi to 70psi. skenniston said: I am looking at buying a merc outboard - 1997 250 hp EFI with an hour meter showing 178 hours. Compression check shows 100,105,100,110,105,100. What should this motor have for compression with these low hours, or am I being scammed and the motor really has 500 or more hours???Stating the Mercury 15 EFI Fourstroke is a simple process of pulling the starter cord – a couple of times when cold, and just once if the outboard engine is already warm. Clever technology that reduces the cylinder compression as you pull the starter cord makes it an easy engine to turn over, with electronic beeps indicating the pull is hard ...Genuine Mercury Marine engines and parts for over 40 years. Great prices, fast shipping from the largest factory authorized Mercruiser and Mercury parts dealer in the US. ... 2019 Mercury Marine implemented a policy that requires all factory authorized dealers to set a minimum selling price for Mercury Outboards. ... Use the boxes on the top ...View and Download Mercury 6 service manual online. 6 outboard motor pdf manual download. Also for: 8, 15, 9.9, 10. ... Page 11 SPECIFICATIONS Propeller Information Chart - 6 HP Wide Open Throttle RPM: 4000-5000 Recommended Transom Height: 15 , 20 , 25 Right Hand Rotation Standard Gear Reduction: 2:1 Diameter Pitch No. Of Material …The Mercury Marine serial number 0B308972 refers to a 60 horsepower, three-cylinder outboard motor manufactured in 1988. The motor’s model number is 1060312BD, and its catalog number is 16404.Performance data you can trust from Mercury Marine. ... Outboard 500 - 600hp 175 - 400hp 65 - 150hp 2.5 - 60hp ... Outboard Motor Mercury 115 Manuam. (31 pages) Outboard Motor Mercury 90-850416009 Brochure & Specs. Mercury marine outboards product brochure (19 pages) Outboard Motor Mercury optimax 115 Installation Manual. (18 pages) Engine Mercury 150 Operation, Maintenance And Installation Manual.And when a head gasket wears out, it automatically causes poor compression in the cylinder. 4. Carbon-Clogged Piston Rings. The clogging of piston rings with carbon is another common cause of a low compression reading in your engine. Plus, the outboard motor or your boat goes through a constant combustion cycle.MODEL YEAR CHART. THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year.THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial number is ...XL. G303046 - UP. 135. 1996. XL. G303046 - UP. MODEL YEAR CHART FOR MERCURY OUTBOARDS MODELS 115 HP - 150 HP.One crucial consideration when it comes to outboards is good compression. Good compression ensures that your motor runs smoothly and reliably without developing any significant issues. In this blog post, we’ll take a closer look at the top five factors that affect good compression in a 4-stroke outboard motor. 1) Piston RingsOct 4, 2018 · Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ... Sep 11, 2012 · Hey everybody, I'm looking at buying a used boat with a 1998 or 1999 125 hp MERCURY carbureted 2-stroke 4 cylinder outboard that I believe has the '2+2 feature' ( where it only runs on two cylinders at low idle). The seller has had the engine professionally maintained for years and has had a... Mercury Outboards (Including SeaPro) 3 years 3 years Mercury Racing Outboards 2 years 3 years MerCruiser Gas Sterndrives & Inboards 1 year 3 years Mercury Diesel Sterndrives & Inboards 1 year / 1,000 hours 3 years Zeus Pod Drive Systems 2 years / 2,000 hours 3 years Mercury Racing Sterndrives 1 year 3 years MotorGuide (All Products) 2 …Nov 16, 2022 · Checking an outboard motor's compression provides boat owners with vital engine-health data. Step one is removing the cowl, then pulling all the spark plugs. Courtesy Lenny Rudow. Special delivery: Sign up for the free Yachting email newsletter. Subscribe to Yachting magazine for $39 for 1 year and receive 3 bonus digital issues. I have been told that Mercury doesn't publish compression numbers. I know that the factory service manual doesn't mention numbers. At least I cannot find them, the manual is disorganized somewhat. The Seloc book give a few random numbers that are not set in stone and the lowest is a 4/5 HP at 90 psi. Most are around 120.Speed, fuel, depth, rpms - everything. All accurately and clearly displayed - including advanced, multi-function, touch-screen LCD displays. Compatible with all sterndrive, Verado, OptiMax, and FourStroke® engines 40 hp and above. Controls and gauges that have to face the ultimate test. Mercury engineers.Pre-Mix 50:1. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. 87 octane / up to 10% ethanol. Pre-Mix 50:1. Recommended oil. Mercury Premium 2 Stroke Outboard oil. Mercury Premium 2 Stroke Outboard oil. NMMA Certified FCW SAE 25W-40. Mercury Premium 2 Stroke Outboard oil. Mercury FourStroke engines deliver no-compromise performance, fuel-efficiency, reliability, innovative features and smoothness to ensure maximum fun, maximum confidence. Performance-inspired configuration: The four-valve, dual-overhead-cam powerheads of the new Mercury V8 and V6 outboards deliver awesome acceleration and supreme confidence.Mercury Manuals; Outboard Motor; 50; Mercury 50 Manuals Manuals and User Guides for Mercury 50. We have 16 Mercury 50 manuals available for free PDF download: Service Manual, Manual, Operation And Maintenance Manual, User Manual, Operator's Manual Specifications: Mercury Verado 350. Full Throttle Range – 5800 to 6400 rpm. Configuration – In-line 6 cylinder. Displacement – 2.6 liters. Induction System – Supercharged with charged air cooling. Gear Ratio – 1.75:1. Gearcase – 5.44 inches. Dry Weigh t- 668 pounds. Steering – electro-hydraulic power.Performance Tests | Mercury Boat House Bulletin Performance data you can trust from Mercury Marine. Refine Engine Horsepower Outboard 500 - 600hp 175 - 400hp 65 - …Fuel System Issues. One of the most common ways your Yamaha outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit. Ethanol gasoline: Only use premium low-ethanol gasoline for your Yamaha …Mercury outboard compression chart
As a rule of thumb on MOST Mercury motors, 90-120 psi (621-856 kPa) is at the lower limit of acceptable compression (at least for mid-range and larger motors). Published compression specifications for these models are as follows: 4/5 hp motors Minimum: 90 psi (621 kPa) 6/8 and 9.9/10/15 hp motors Normal 115-120 psi (787-856), Minimum: 100 psi ...5 Cast Aluminum (Use with GM Engine Code 2XY) 6 Cast Aluminum (Use with GM Engine Code 4XY) 7 Flat Head. 8 Forged Aluminum, Recessed Head. 9 Starboard. 10 Port. 11 .010 (.25 mm) Oversize. 12 No longer available – order from Seaway (800) 332-0803. Find standard & oversize pistons for your Mercruiser stern drive using the application chart from ...Mercury/MarinerEFI, 90/115 HP Command Thrust, Optimax and Verado Outboards 135-350 HP. 135-350 HP 1978 & Newer and 90/115 Command Thrust 2014 & Newer Outboard Motor Mercury 115 Manuam. (31 pages) Outboard Motor Mercury 90-850416009 Brochure & Specs. Mercury marine outboards product brochure (19 pages) Outboard Motor Mercury optimax 115 Installation Manual. (18 pages) Engine Mercury 150 Operation, Maintenance And Installation Manual.517. Dec 15, 2011. #2. Re: Compression question - 50hp 2 stroke. Bond-O was the first one with the completely correct answer. It's the ratio between the volume when the piston is down and when the piston is up. High octane gas actually burns slower than low octane, as it is a more articulated (branched) molecule.Engine RPM Chart is for reference only. Please consult owner’s manual to confirm specifications. OMC RPM CHART HP/Model WOT RPM Gear Ratio 1.6 L V4 Sea Drive 4500-5500 1.8 L V4 Sea Drive 5000-6000 2.3 L Cobra 5200-5600 2.00 2.5 L Sea Drive 5000-5500 1.86 2.5 L Model 400 4200-4600 2.6 L Sea Drive 5000-5500 1.86 3.0 L Model 400 4200-4600 1.85Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ...Electronic Navigation Charts & Software; Digital Instruments; Display Mounts; VHF Radios & Communication ... Mercury & Mariner Outboards . Proper compression on late 90's 8hp 2S Merc? ... Proper compression on late 90's 8hp 2S Merc? A rope start should give you over 70-80psi, mchrist, with both cylinders within a …Evinrude Compression. Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression.Mercury Manuals; Outboard Motor; 50; Mercury 50 Manuals Manuals and User Guides for Mercury 50. We have 16 Mercury 50 manuals available for free PDF download: Service Manual, Manual, Operation And Maintenance Manual, User Manual, Operator's Manual The 351 Windsor has a displacement of 351 cubic inches or 5.8 liters. The stock stroke of the engine is 3.5 inches and the stock cylinder bore is 4 inches. It has a distinct firing order from the other Ford Small Blocks, 1-3-7-2-6-5-4-8 vs 1-5-4-2-6-3-7-8. Cast out of iron, the bare block weighs in at between 150 – 200 lbs depending on the year.These motors do not have any consistent year-to-serial scheme. Mercury ceased publishing this information after the 1996 model year. There is no way to find the model year of motors with significantly higher. serial numbers than listed in these guides. There is NO serial-to-year cross-reference chart for 1997 and later motors.40ELPTO (2 Cyl.) This 2002, 40 hp Mercury is made for saltwater. This outboard engine weighs approximately 176 pounds. It has 2 cylinders. The pistons have a 39.3 displacement. The bore width is 2.99" and the stroke length is 2.80". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the right ...Dec 12, 2013 · Re: 1999 90 hp 2 stroke compression numbers, My service manual, OEM Merc/Mariner PN 90-830234R3 publication date Dec. 1997 states in section 1C-6 "Important Information", Compression Check: REMOVE SPARK PLUGS. Install gauge. Hold throttle plate (carb butterflies) at WOT (fully open) Wide open throttle RPM range chart for Mercury powered boats. THE PROP FINDER SITE Select Make. Evinrude Force Honda Johnson Mariner Mercruiser Stern Drive Mercury …Place your engine’s throttle in the neutral position. 4. May sure the key is not in the ignition. 5. Using your torque wrench with a spark plug socket, carefully remove each plug. 6. NGK spark plugs come pre-gapped. If you would like to check the gap, you can do so with a gap gauge.Compression 1981 90 hp. 13. Engine sleeve removal 200 hp Merc. 10. 15hp rebuild reuse or replace piston rods. 4. Piston wear marks bad news or business as usual. 30. 25 hp merc compression.8,217. Nov 25, 2001. #2. Re: Compression for 90 hp Mercury. You have a stuck needle valve in the carb. This needle valve is pushed up by the float,to shut off the fuel flow when the bowl is full. The carb must be removed,dssassemble at the float,needle removed and cleaned (or replaced if bad),and the carb re-assembled.If a low compression pressure reading of two adjacent cylinders on the engine were obtained, a head gasket may be to blame. Evidence of rust or water on the spark plugs could also be an indication of a blown head gasket. compression test. Here's how to do a compression test on your Mercury outboard 2-stroke engine.Oct 4, 2018 · Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ... Nov 12, 2009 · skenniston said: I am looking at buying a merc outboard - 1997 250 hp EFI with an hour meter showing 178 hours. Compression check shows 100,105,100,110,105,100. What should this motor have for compression with these low hours, or am I being scammed and the motor really has 500 or more hours??? Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ...To do a compression test, your outboard must be hot. First remove the spark plugs, then remove the 15-amp fuel pump fuse to keep fuel from entering the cylinders. Thread in the …Apr 25, 2012 · Anyone know what healthy PSI should be? Don't know exact year -- late 1990s or early 2000s. 8hp Mercury 2 stroke. Mercury Parts Catalog. Find the right parts for your Mercury® or MerCruiser® engine here. Search by serial number to see detailed engine diagrams and part numbers, then contact your local authorized Mercury Marine dealer to place your order. You can also browse by model, but we strongly recommend using your serial number to ensure you find ...Two-stroke 15-horsepower Mercury outboard motors require a 50:1 fuel-to-oil mixture. However, not all 15-horsepower Mercury outboards are two-stroke engines; many newer models are four-stroke designs.Below I have listed the oil ratios recommended by manufacturers and a few tips based on my experience. 100:1 - Mix 50ml of oil per 5ltrs of fuel. Recommended by Yamaha and Suzuki for most of their small two stroke engines up to about 30hp, this ratio requires the least amount of TCW3 two stroke oil.2000 mercury 225 optimax. Complete mercury new top end in 2010. The guy put 11 hours on the motor then removed it and hung it in the garage for six years. He installed a new mercury 250 on his boat. S … read more5 Cast Aluminum (Use with GM Engine Code 2XY) 6 Cast Aluminum (Use with GM Engine Code 4XY) 7 Flat Head. 8 Forged Aluminum, Recessed Head. 9 Starboard. 10 Port. 11 .010 (.25 mm) Oversize. 12 No longer available – order from Seaway (800) 332-0803. Find standard & oversize pistons for your Mercruiser stern drive using the application chart from ... 60 amp / 756 watt (Belt-Driven) Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. Mercury FourStroke Oil 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes.Jun 26, 2008 · Re: Compression for 50 HP Merc 4 stroke. Sounds severely overpropped to me, but there isn't enough info to be sure. RPM at top speed is critically important. It should be at or near 6,000rpm and I don't see that happening at 27mph. With a 22" pitch I would expect near 40mph at 6,000rpm. To resolve it, you need a tach on your engine, at least ... Mercury Manuals; Outboard Motor; 50; Mercury 50 Manuals Manuals and User Guides for Mercury 50. We have 16 Mercury 50 manuals available for free PDF download: Service Manual, Manual, Operation And Maintenance Manual, User Manual, Operator's Manual5.7L V10 Mercury® 5.7L V10 350 and 400hp Verado® outboards continue the legendary Verado engine family’s legacy of providing premium marine performance. With the strength of the outboard segment's first V10 naturally aspirated powerhead, they deliver extraordinary power and capabilities so you can confidently explore beyond the horizon. Take command of the water with innovative SmartCraft ... The plunger section of this casing really is this plunger the spring that goes on the washer that goes on and the little circlip that holds the washer on in the other section. Should this little conductive disc be so corroded that it's not going to conduct electricity, then you'll find that the kill switch won't function properly and you won't ...The V8 Verado outboards are available in 250- and 300-hp models, and use Mercury’s Advanced MidSection to reduce vibration and noise. The Verado takes its name from the famous L6 supercharged engine it replaces, but it is not supercharged and because of its large displacement, light weight and transient spark ignition, it doesn’t need to be. CalebA820. Technician. Marine technology. 22 satisfied customers. Looking to purchase a 2000 260 outrage with 225 mercury. Looking to purchase a 2000 260 outrage with 225 mercury Optimax. The engines have 580 hours on them. On sea trail at 5500 rpm's the SOG was … read more.Man, I did a compression test today on my 2000 Mercury Optimax 200hp with the throttle wide open, warm engine, and a - Answered by a verified Marine Mechanic. We use cookies to give you the best possible experience on our website. ... I have a mercury outboard 402 thunderbolt 1972 s/n 340634.Can view/read-out CDS on most Yamaha, Suzuki & E-Tec outboard engines, some Mercury marine and Jet Ski & Jet Boats as per our list below! YAMAHA MARINE.What should minimum compression be on a 25hp 1975 evinrude what should the compression be on a 2000 8 hp 1976 evinrude 4 stroke whats the minimum compression on a cylinder 1977 evinrude 100 compression check for 5 7 1978 mercruiser marine engine compression ratio on a 1985 5 7l 1979 mercruiser correct compression for 350 1980 mercruiser how to do compression check on mercruiser 3 0 1981 ...Mercury says the V-10 has been tested at more than 90 mph. The 2.08-to-1 ratio amplifies torque to four-blade Revolution X props that offer 35 to 50 percent more blade area than props for the 2.6-liter Verado 400 model, according to Merc. Blade area provides the thrust to push heavy boats on plane with authority and hold them there at lower ...2 stroke modern outboards have lower compression levels especially at low crank levels due to lower compression ratios and very low supercharger effect from pistons/crankshaft lobes at low cranking rpms. 2 stroke air cooled engines, even less cranking compression psi. Sealing tolerances when cold. what E. says in their service manual:Mercury FourStroke engines deliver no-compromise performance, fuel-efficiency, reliability, innovative features and smoothness to ensure maximum fun, maximum confidence. Performance-inspired configuration: The four-valve, dual-overhead-cam powerheads of the new Mercury V8 and V6 outboards deliver awesome acceleration and supreme …2000 mercury 225 optimax. Complete mercury new top end in 2010. The guy put 11 hours on the motor then removed it and hung it in the garage for six years. He installed a new mercury 250 on his boat. S … read moreTwo-stroke 15-horsepower Mercury outboard motors require a 50:1 fuel-to-oil mixture. However, not all 15-horsepower Mercury outboards are two-stroke engines; many newer models are four-stroke designs.Evinrude Compression. Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression. 4.6L V8 For boaters who refuse to compromise, Mercury V8 250 and 300hp Verado® outboards represent the pinnacle of superior outboard design and performance. They deliver exhilarating acceleration and top speed, with the power and reliability to make runs over long distances and choppy water. The Mercury-exclusive Advanced MidSection (AMS) and under-cowl noise management set the standard for ...2. Install the compression tester. Install the compression tester where the spark plug would normally be. Be sure to get a good seal between the tester's o-ring and your tool. 3. Pull on the starter rope. Pull the starter rope a few times to get an accurate compression reading. Normal compression is between 90 and 110 psi.Mercury® MerCruiser®. No matter what type of boating interests you most, Mercury® MerCruiser® can power it better than anyone else. Our extensive range of sterndrive, inboard and tow sport engines is the most comprehensive lineup in the industry, all engineered to provide the best possible boating experience. The answer to your …Mercury Racing’s new 450R is an outboard powerhouse. Courtesy Mercury Marine. “The 400R starts out strong, but then seems to sort of run out of breath as you build up speed,” says Mike Griffiths, who was manning an MTI 340X cat. “The 450R’s torque starts early and stays linear. This motor pulls hard all the way to wide-open throttle.”.Embrace Possibility. Mercury FourStroke outboard motors are incredibly powerful and efficient, and they feature a wide range of applications. Crafted for less weight and high displacement, they generate abundant torque and immediate power. And because they don’t have to work as hard as heavier engines or those with lower displacement, they make …2. Install the compression tester. Install the compression tester where the spark plug would normally be. Be sure to get a good seal between the tester's o-ring and your tool. 3. Pull on the starter rope. Pull the starter rope a few times to get an accurate compression reading. Normal compression is between 90 and 110 psi.One crucial consideration when it comes to outboards is good compression. Good compression ensures that your motor runs smoothly and reliably without developing any significant issues. In this blog post, we’ll take a closer look at the top five factors that affect good compression in a 4-stroke outboard motor. 1) Piston Rings125ELPTO. This 125 horsepower Mercury outboard, manufactured in 2003, is a saltwater model. The engine weight is recorded at 348 lbs. This is a 4 cylinder model. The displacement for the pistons is 113. The bore for this outboard is 3.5 inches and the stroke is 2.93 inches. This engine has power steering and a electric-type starter.Electronic Navigation Charts & Software; Digital Instruments; Display Mounts; VHF Radios & Communication ... Mercury & Mariner Outboards . Proper compression on late 90's 8hp 2S Merc? ... Proper compression on late 90's 8hp 2S Merc? A rope start should give you over 70-80psi, mchrist, with both cylinders within a …The Mercury four cylinder 2+2 outboards are all Mercury. The Mariner brand started in the late 1970s. Those early Mariner motors were Yamahas imported by Mercury and sold with different decals. That is how Yamaha got their foot in the door of the American outboard market. adlert: posted 01-13-2010 08:51 AM ET (US)Engine Details. Built to take you almost anywhere and nearly 20 pounds lighter than its closest competitor, it's an incredibly fast high-output 150hp FourStroke outboard. Great for bass, offshore fishing, and runabout boats.115ELPT EFI 4-Stroke. This 2004, 115 hp Mercury is made for saltwater. This outboard engine weighs approximately 386 pounds. It has 4 cylinders. The pistons have a 106.2 displacement. The bore width is 3.11" and the stroke length is 3.50". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the ...So, if you find your compression to be low in one or more cylinders, it’d mean your engine isn’t running well. In situations like these, a compression check can indicate …The Mercury four cylinder 2+2 outboards are all Mercury. The Mariner brand started in the late 1970s. Those early Mariner motors were Yamahas imported by Mercury and sold with different decals. That is how Yamaha got their foot in the door of the American outboard market. adlert: posted 01-13-2010 08:51 AM ET (US)Pre-Mix 50:1. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. 87 octane / up to 10% ethanol. Pre-Mix 50:1. Recommended oil. Mercury Premium 2 Stroke Outboard oil. Mercury Premium 2 Stroke Outboard oil. NMMA Certified FCW SAE 25W-40. Mercury Premium 2 Stroke Outboard oil. A compression check can tell a lot about the health of your outboard engine. Here's why and how it's done. There are four distinct phases in a four-stroke cycle: induction, compression, power, and exhaust. A lot can be learned by checking the engine's ability to compress the gas/air mixture. (Illustration: ©2016 Mirto Art Studio)MODEL YEAR CHART. THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year.. Z5800 craftsman