70 Hp Johnson Stumbles On Acceleration

I can lift the warmup lever and it will hit high rpms with no problem, but when I try to run it full or even half speed while in gear it goes for about a count of 5 and then bogs down. 00 & up for a new model? T hen you have come to the right place. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon acceleration, more than likely the carburetor needs an adjustment to the accelerator pump assembly. 35 hp Johnson Evinrude Outboard/ Inboard Complete Setup just needs fuel tank. I can get it to 2. SUZUKI DOWNLOAD 2003 2007 Service Manual DF60 DF70 60/70 HP Outboard (DF 70) 70HP (70 HP) Motor engine hesitates during acceleration, engine idles rough. (3 Cylndr Pleasure 13 Spline). (It costs much less to replace a Comprop than a lower unit. All SOLAS propellers are developed by a state of art process. to thunderracing All I can tell you is I have been warned repeatedly that they will not stay together so well. The electric choke was all whaked out of adjustment & sticky. Boat Propeller Fit Guide. Boat engines have the same operating principles as do land vehicle engines, but having trouble with your boat engine can leave you and your family in a precarious predicament. Evinrude props deliver a better boating experience. The Quality Mercury Spitfire gives faster acceleration & superior holding ability for tight turns and dirty water. Replaced all gas line and bulb and connectors from portable gas tank to engine. The Powertech RXB4 propeller is an excellent multi-purpose performance boat prop for D Class, 40-140HP Evinrude-Johnson, E-Tec Outboards and has a constant 13. I have read that the evinrude 9. Mercury 70 hp bogs down at full throttle. Buy BRP Johnson Evinrude Viper Stainless Steel 3 Blade Propeller 13. 4) No power or heat source to choke. One thing you can do to repair an outboard motor that is suffering from several symptoms such as sputtering, hesitation at startup or the inability to start is to add fuel treatments. 95 shipping available. Possibly damaged by a backfire condition. The problem occurs when the motor is warm and just above idle with a load. 90 HP Outboard Motor. Easy step by step guide on how to repair an automotive engine that is surging, this information pertains to most vehicles and is listed in. 1973 Johnson 65 hp out board motor. 75 horsepower johnson/evinrude 3 cyl bogs down or dies when throttle is opened, runs and idles fine on "hose". V MAX SHO i4 90 hp. Extra cupping ensures handling performance. In those applications, the old rule usually still applies – four blades deliver better acceleration and smoother steering, at some cost to top speed. Johnson Evinrude 1971 To 1989 1 To 60hp Service Manual Pdf DOWNLOAD HERE JOHNSON/EVINRUDE outboard service manuals in adobe pdf format a repair manual for 1971-89 outboard 1 to 60hp this cd is 237mb 640 pages contents listed below: INTRODUCTION Filling Lower Unit CLEANING, WAXING, POLISHING Propeller Installation CONTROLLING CORROSION SHIFT WITH. Johnson 6 HP 1966 - 1979 Outboard Propellers. 1973 1990 evinrude johnson 48 235 hp service manual outboard pdf. Durable stainless steel provides greater strength. Posted in BRP Brand Manuals, Johnson 2-Stroke Manuals, Johnson Brand Manuals, Johnson Outboard Manuals More. Offering discount prices on OEM parts for over 50 years. Matching Boat Prop to Engine. Blade style descriptions, pictures; pitch, diameter and part number info. After market decal sticker kit for a Johnson 70 HP motor cowl as pictured. System Running Too Lean. Evinrude - Johnson 40 to 130 hp ETEC 2004 and newer. Dickerson's Marine: Serving Eastern Long Island since 1957 with quality service. I can get it to 2. 9 HP 6 HP 4 HP 2 HP 1973 Johnson Links. Things were looking up: I replaced the spark plug, cleaned out the exhaust, adjusted the idle / fuel screws, and even replaced the brakes (I can stop now!). I have a late 1970's 70hp Evinrude. Solas' Amita Three-Blade Johnson/Evinrude 15-35hp Aluminum Propeller is made using a state-of-the-art squeeze-casting process to make its aluminum propellers stronger and tougher than traditional die-cast props. But it is handy to know as a last resort if you're stuck out on the water. Choosing the Correct Parts. The amount. mercury outboard 90 hp stalls on acceleration. Find your boat the engine it deserves with Evinrude's unparalleled line of outboard motors, parts, and accessories, available at dealers nationwide. 1973 1990 evinrude johnson 48 235 hp service manual outboard pdf. And Honda continues the re-engineering it started with its BF90 in 2006, offering an improved, lighter 115-hp engine. 1985 70 HP Evinrude loses power on acceleration and stalls out. The first thing any competent technician will do on a 1988 90 HP OMC product is a leak-down test. Green Bay Prop offers new boat parts such as 13 7/8 x 15 Pitch Stainless Steel Prop Suzuki 70-140 HP 4-Stroke Outboard. Outboard Spares Response. 1990-2001 Johnson Evinrude Service Manual 1. Only problem I really have is acceleration. Buy and sell almost anything on Gumtree classifieds. When a engine is hesitating it will cause the car to lunge or surge which will cause a sudden jerk as the car slows. Johnson 4-Stroke 60/70 HP 90-95 Johnson 4-Stroke 40/50 HP 96-101 2004 PRODUCT INFORMATION GUIDE 2-STROKE 4-STROKE HPEXAMPLES faster acceleration. The Quality Mercury Spitfire gives faster acceleration & superior holding ability for tight turns and dirty water. I recommend cleaning your carby the old fashioned way. (It costs much less to replace a Comprop than a lower unit. OMC 8-15HP 2000 & Newer OMC 14HP 1989 OMC 25 HP 1978-1991 Inc. I recommend cleaning your carby the old fashioned way. Also for: 75, 115, 90, 80, 100. Stories Check out the performance and reliability of our 40-70 HP outboards on pages 16-17. Easy step by step guide on how to repair an automotive engine that is surging, this information pertains to most vehicles and is listed in. If I increase the idle speed for 10-15 seconds then quickly engage gear I can accelerate away with no stalling, also no effect on maintaining power. I just bought a new Lund with a 70 hp johnson. Evinrude - Johnson 40 to 130 hp ETEC 2004 and newer. CONTENTS OF THIS SERVICE MANUAL: This 1990-2001 Johnson Evinrude 1 thru 70 HP Outboard Service Manual contains fully detailed step-by-step repair procedures with hundreds of photos and illustrations to guide you through any repair, maintenance, overhaul, service specifications or troubleshooting procedure. SOURCE: 1974 Johnson 70 hp outboard, quits on acceleration. 95 shipping available. There are a lot of sites to go shopping from on the net, however you have indeed selected our web site and we appreciate that very much. The most common is an ethanol treatment, which contains a chemical that offsets the condensation and water problems ethanol can cause in a marine engine that. These 90 HP outboard motors for sale have been redesigned into a rock-star boat motor. Propellers that fit Johnson 70hp equipped boats, displayed in chart form. Page 2 of 2 < Prev 1 2. Flats boat operators will appreciate this propellers ability to lift the transom and accelerate cleaner in shallower water. Stumble, hesitation, and flat spots are caused when the accelerator doesn't provide enough of a fuel shot as the throttle is opened. Use the 2+4 at every fuel up and it will help keep things cleaned out. Horsepowers by Year. As one of Yamaha's most versatile motors, this outboard provides industry leading torque and acceleration. The first thing any competent technician will do on a 1988 90 HP OMC product is a leak-down test. Chrysler 100, 115 and 140 HP Outboard Motors Service mNaul, OB 3439. From the rocket hole-shots to the unmatched top end, OptiMax sets the standard for power, acceleration, and fuel economy. Boyesen's patented dual-stage design incorporates a specially shaped top reed and a ported bottom reed. Extra cupping ensures handling performance. Through a sequence of theoretical calculations, geometry design, prototype testing, pilot production. With a wide selction of Evinrude/Johnson Evinrude Johnson Outboard 2-Stroke Spark Plugs, 4-stroke spark plugs, ETEC Spark Plugs, & Evinrude/Johnson DI spark plugs you'll be sure to find what you're looking for here at the official Evinrude online store. Repowering with a used outboard is another great way to save some cash. Will re-start ok and idle. Its high-rake, reduced diameter design helps maintain top-end speed. This is a factory original equipment part, not aftermarket. A new spark plug is a small thing that can make a big difference. Download a 90HP Yamaha, Suzuki, Evinrude, Mariner, Johnson, Mercury outboard repair manual in seconds. 70 Outboard Motor pdf manual download. Things were looking up: I replaced the spark plug, cleaned out the exhaust, adjusted the idle / fuel screws, and even replaced the brakes (I can stop now!). DOWNLOAD 70HP Outboard Repair Manual 78. CONTENTS OF THIS SERVICE MANUAL: This 1990-2001 Johnson Evinrude 1 thru 70 HP Outboard Service Manual contains fully detailed step-by-step repair procedures with hundreds of photos and illustrations to guide you through any repair, maintenance, overhaul, service specifications or troubleshooting procedure. Boat engines have the same operating principles as do land vehicle engines, but having trouble with your boat engine can leave you and your family in a precarious predicament. Solas Amita-3 Rubex Propeller E/J 40-140 HP. V MAX SHO i4 90 hp. Engineered to meet the needs of performance-driven boaters, Solas propellers deliver peak characteristics to a wide range of applications. Evinrude - Johnson 40 to 130 hp ETEC 2004 and newer. Connect a battery and it goes through a set up sequence and beeps, and the trim motor works,. May backfire or. 1973 1990 Evinrude_Johnson 48 235 HP Service Manual Outboard - PDF Service Manual DOWNLOAD HERE "1973 1990 Evinrude/Johnson 48 235 HP Service Manual Outboard -… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Johnson 4-Stroke 60/70 HP 90-95 Johnson 4-Stroke 40/50 HP 96-101 2004 PRODUCT INFORMATION GUIDE 2-STROKE 4-STROKE HPEXAMPLES faster acceleration. Check out our Store today. It has more cup for best-in-class acceleration and holding, and tenacious grip in turns. Outboard motors 30 HP and higher, and Sterndrives require the most attention to correct propeller selection. I had a ’78 Evinrude 70 hp, ran great all the years I owned it although my buddy had a 60 hp 3 cylinder Evinrude and it was a piece of junk…. alex rodriguez 60,914 views. is a certified OMC/BRP Evinrude service (warranty+repair) station since 1979. Extra cupping ensures handling performance. 90 HP 4 stroke Mercury problem. 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I had a ’78 Evinrude 70 hp, ran great all the years I owned it although my buddy had a 60 hp 3 cylinder Evinrude and it was a piece of junk…. Test acceleration, any hesitation, lean miss, (sometimes called a lean sneeze), or cough, make slight adjustment richer on the idle and retest. Full range of 4 Blade Props in stock. Carbs have been rebuilt, - Answered by a verified Marine Mechanic. 1990-2001 Johnson Evinrude Service Manual 1. PPT is the #1 source for the Do It Yourself outboard Motor mechanics. 8-liter displacement make the I-4 V MAX SHO 90 a class leader in torque, top speed and efficiency. Light and powerful, they sport 1-liter displacement, single-overhead-camshaft designs and electronic fuel injection. Easy step by step guide on how to repair an automotive engine that is surging, this information pertains to most vehicles and is listed in. A second boater is required to navigate and control the vessel while you make the adjustments. Full range of 4 Blade Props in stock. 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First off, you need to determine whether it is backfiring out the exhaust or back up through the carb. Offering discount prices on OEM parts for over 50 years. Occasionally, the carburetor's idle jet will become clogged with dirt, which will cause the hesitation or stall. AUSTRALIA WIDE: All items will be sent through Australia Post Eparcel, we offer Road freight and Express delivery options. Boats can be a pain in the ass. Solas' Amita Three-Blade Johnson/Evinrude 15-35hp Aluminum Propeller is made using a state-of-the-art squeeze-casting process to make its aluminum propellers stronger and tougher than traditional die-cast props. We sell and service Johnson, Evinrude and Suzuki outboards, Lawn-Boy mowers, trailers and a large variety of boats. Brand new, genuine Johnson/Evinrude/OMC KIT AY, PREMIX FUEL PUMP & LIMITER. You won't find genuine Evinrude parts cheaper elsewhere so always shop at Boats. is almost bullet proof if you don't get too carried away inside it. 95 per download! 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For my season start up procedures, I started the motor on my driveway with the water ear muffs. You should always get an outboard motor with the maximum horsepower your boat is rated for. With a wide selction of Evinrude/Johnson Evinrude Johnson Outboard 2-Stroke Spark Plugs, 4-stroke spark plugs, ETEC Spark Plugs, & Evinrude/Johnson DI spark plugs you'll be sure to find what you're looking for here at the official Evinrude online store. This INSTANT REPAIR MANUAL DOWNLOAD for the Mercury-Mariner, Johnson-Evinrude, Suzuki, Honda, Yamaha 70 HP outboard engines were designed primarily for factory service 70 HP outboard technicians in a properly equipped shop. runs ok on plane but i feel she should be more more powerful. 1989 70 hp mercury outboard hesitation at lower end. Get the most out of your outboard engine with Evinrude's line of boat propellers, built to make a difference where the power meets the water. Offering discount prices on OEM parts for over 50 years. Ultra durable Solas Stainless Steel Props are highly wear-resistant and have a high rake design for outstanding acceleration and notable bow lift. If you want speed, you want the Viper™ prop. The Outboard-Wizard is back! (April 2018): Ready to assist public with free technical help on all outboard engines. 140 hp 2 stroke 1977-94. Wrist pins and those bearings are not same size as regular 3 cyl. 9 hp and the evinrude 15 hp are the same except the carb,and that you can make your 9. Cut from exterior grade 5-7 year life vinyl ( UV resistant and fully waterpr oof ), not ink printed. The difference in stiffness between the top reed and the bottom reed allow the reeds to respond quickly and accurately to changes in engine pressure. We will go through the complete procedure to do a major tune up on a small motor, in this case. I've gotten the tune pretty good, driveability is great. 90 HP 4 stroke Mercury problem. Buy BRP Johnson Evinrude Viper Stainless Steel 3 Blade Propeller 13. gunna have to go get that checked out. runs ok on plane but i feel she should be more more powerful. Johnson 6 HP 1966 - 1979 Outboard Propellers. Prop for a 1720 with Johnson 70 hp 2-stroke. As far as I know the only modification to the engine is the disconnection of the VRO, this was done some time ago by the previous owner. and i probably need a new water pump impeller thing. 50 hp 1994 and newer. Helpful Information. Johnson+115+hp+idle+speed+adjustment; factory setting Johnson idle mix; how to adjust idle stop screw on an Johnson outbaord motor; how to change idle on a Johnson 50 hp 2 stroke outboard; how to fix rough idle on Johnson outboard; how to lower idle on 70 hp Johnson; how to turn down the idle on 90 hp mecrcury; idle adjustment on 40 hp 2004. Ususally it is a "needle and seat" configuration that uses a float to push a conical shaped needle up into a narrow hole at the fuel inlet called a seat. Specifications:. All propeller returns are subject to a 20% restocking fee with no refund on shipping charges. Includes the latest components designed to combat alcohol. I have a 1992 15 hp Evinrude which is the same motor and I had the same issue. Overall best acceleration and top-end speed will be achieved when your full-throttle RPM is near the midpoint of the manufacturer's recommended maximum RPM range. Flats boat operators will appreciate this propellers ability to lift the transom and accelerate cleaner in shallower water. Shop Chrysler Outboard Propellers at Wholesale Marine. Ultra durable Solas Stainless Steel Props are highly wear-resistant and have a high rake design for outstanding acceleration and notable bow lift. Nunc congue, justo vel imperdiet dignissim, nibh est suscipit sem, ac semper ligula nisi eget tortor. Then I resta. Quality props from Michigan Wheel, Solas, Turning Point, Stiletto, Quicksilver. Shop Chrysler Outboard Propellers at Wholesale Marine. A 1977 model 70 HP does not have S. Started and idled okay but died on normal take off and acceleration. Durable stainless steel provides greater strength. There is a strong possibility. runs ok on plane but i feel she should be more more powerful. I spent a lot of last summer doing a complete makeover on my old baby. 5 to get more hp,is there any down and dirty little tricks for this motor like the 9. 00 for it,bilge pump,fish finder,electric winch-i never tried it,all lights and horn work,steering is all set up,was in water 3 times this year,this is a big heavy duty deep v. Replaces Johnson/Evinrude # 583035. What is the oil to fuel ratio for a 70 hp 1976 Johnson outboard motor? it's probabally for 3 gallons of gas 8 oz of 2 cycle oil. With a wide selction of Evinrude/Johnson Evinrude Johnson Outboard 2-Stroke Spark Plugs, 4-stroke spark plugs, ETEC Spark Plugs, & Evinrude/Johnson DI spark plugs you'll be sure to find what you're looking for here at the official Evinrude online store. this boat is to be picked up only in milton vt. Get the most out of your outboard engine with Evinrude's line of boat propellers, built to make a difference where the power meets the water. 8-liter displacement make the I-4 V MAX SHO 90 a class leader in torque, top speed and efficiency. Boat Propeller Fit Guide. I was out this weekend and when I was on plane running around 4500 rpm everything was great. Had a 70 hp Mercury that bogged on load and the stator was bad. Find your boat the engine it deserves with Evinrude's unparalleled line of outboard motors, parts, and accessories, available at dealers nationwide. Overall best acceleration and top-end speed will be achieved when your full-throttle RPM is near the midpoint of the manufacturer's recommended maximum RPM range. 90 HP Outboard Motor. All propeller returns are subject to a 20% restocking fee with no refund on shipping charges. Boat engines have the same operating principles as do land vehicle engines, but having trouble with your boat engine can leave you and your family in a precarious predicament. I've been fighting through this for some time. SUZUKI DOWNLOAD 2003 2007 Service Manual DF60 DF70 60/70 HP Outboard (DF 70) 70HP (70 HP) Motor engine hesitates during acceleration, engine idles rough. Wrist pins and those bearings are not same size as regular 3 cyl. But you also need compression and the correct spark timing. I have a 1992 15 hp Evinrude which is the same motor and I had the same issue. The Powertech RXB4 propeller is an excellent multi-purpose performance boat prop for D Class, 40-140HP Evinrude-Johnson, E-Tec Outboards and has a constant 13. The Evinrude 70 HP EFI fuel tuner tricks the engine sensors’ signals being read by the Electronic Control Unit, resulting in an adjustment to the fuel injection timing, which is what causes the increase in horses, to boost acceleration and throttle response throughout the rpm range. 25 to 70 HP - PDF Service Manual. 1982 70 HP Johnson outboard bogs down and dies at wide open throttle? I recently bought a boat with a 70hp Johnson outboard that has been sitting for at least 5 yrs. All gas in both tanks is less than week old. Outboard Spares Response. It's longer swept blades and a large diameter give this prop a better grip on the water, faster acceleration, and greater top end speed. For example, inflatable boats average between 9 and 25 HP, while pontoon vessels can go as high as 300 HP, depending on the model. Fuel and air comes from the fuel system and carburetors. I have a late 1970's 70hp Evinrude. With my 70hp my boat will top out at 30mph and now i put the throttle down and it goes 9mph wide open. Johnson 4-Stroke 60/70 HP 90-95 Johnson 4-Stroke 40/50 HP 96-101 2004 PRODUCT INFORMATION GUIDE 2-STROKE 4-STROKE HPEXAMPLES faster acceleration. All OEM Evinrude parts discounted up to 80% below MSRP and come with our unbeatable price match guarantee!. Specifications:. If all 3 ignition wires are connected the engine will still only run on 1 cylinder. It worked out great with my sons boat with fast acceleration, better control, and a speed of 35 mph. 4) Repair as necessary. Posted in BRP Brand Manuals, Johnson 2-Stroke Manuals, Johnson Brand Manuals, Johnson Outboard Manuals More. Like before if you are not mechanically inclined seek a qualified outboard mechanic. Matching Boat Prop to Engine. All OEM Evinrude parts discounted up to 80% below MSRP and come with our unbeatable price match guarantee!. With my 70hp my boat will top out at 30mph and now i put the throttle down and it goes 9mph wide open. We have chosen this motor to fulfill the 60-70 hp range. SOURCE: 1974 Johnson 70 hp outboard, quits on acceleration. 2005 Johnson 90 115 150 175 hp PL PX CX GL 2-Stroke Outboard Owners Manual. From the rocket hole-shots to the unmatched top end, OptiMax sets the standard for power, acceleration, and fuel economy. The post caught my eye. I have read that the evinrude 9. All cars made in 1996 and after are equipped with an OBDII interface. Offering discount prices on OEM parts for over 50 years. Our 1-liter 70-hp midrange features a two-piece upper case and 10 percent lighter pistons. Outboard motors 30 HP and higher, and Sterndrives require the most attention to correct propeller selection. It does however have an overheat temp sender connected to the horn fitted inside the control box. Buy BRP Johnson Evinrude Viper Stainless Steel 3 Blade Propeller 13. This ignition system produces very high voltages and due care and caution must be practiced in working with it. It has more cup for best-in-class acceleration and holding, and tenacious grip in turns. Product Description. View Gumtree Free Online Classified Ads for johnson outboard and more in South Africa. 50 hp Evinrude 1980-1987 60 hp Evinrude 1989-2000 70 hp Evinrude 1986-1999 90 hp Evinrude 1980-1998 110 hp Evinrude 1989-1998 115 hp Evinrude 1980-1986 120 hp Evinrude 1986-1994 140 hp Evinrude 1980-1985 150 hp Evinrude 1992-2005 175 hp Evinrude 1992-2005 200 hp Evinrude 1988-1998 225 Evinrude 1988-1998 Mercury 70 hp Mercury 1987-1997 80 hp Mercury. Boat Propeller Fit Guide. is almost bullet proof if you don't get too carried away inside it. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. 5 mph trolling speed and it runs a little rough while trolling and if i go any slower it will stall and while trolling i have to hit the choke every 15min or it will sta. Had a 70 hp Mercury that bogged on load and the stator was bad. Manuals contain step-by-step repair procedures, illustrations, pictures and advanced troubleshooting. My son has a circa 1985 Johnson 70 HP two-stroke outboard motor. AUSTRALIA WIDE: All items will be sent through Australia Post Eparcel, we offer Road freight and Express delivery options. DOWNLOAD 90HP Outboard Repair Manual 553. The motor had always run great previous. Parts and Service- Parts and service can be provided like any other johnson outboard AND ARE INTERCHANGABLE. Mariner Outboard Motor Service manual. 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This INSTANT DOWNLOAD 65 horsepower Mercury, Mariner, Yamaha, Suzuki, Johnson and Evinrude outboard engine repair manual was designed for do-it-yourself mechanics and factory trained technicians. 1973 1990 Evinrude_Johnson 48 235 HP Service Manual (70-HP) 1974-1990. Power valve blown out by spitback up through carb. I am not sure where these two wires go but I am almost positive they are not to be attached there. 4 GSI/DP Volvo Penta, 454 engine 1998 27 foot Doral, well last week I idled out of the bay which it ran just fine for about five miles then I pulled back to do a little trolling, after an hour I decided to pick it up and move to another spot and noticed that I couldn't get on plan or accelerate over 2. Test acceleration, any hesitation, lean miss, (sometimes called a lean sneeze), or cough, make slight adjustment richer on the idle and retest. Started and idled okay but died on normal take off and acceleration. Holley Carburetor: Idle and Transition Circuit Calibration Guide July 27, 2015 by Muscle Car DiY At the risk of sounding repetitive, let me say once again, that if you bought an application-specific carb, you probably are only going to need to do minimal adjustments to mixture calibration. Full range of 4 Blade Props in stock. 95! Johnson Evinrude Outboard Motor Service manuals are available for immediate download! This service is available for only $4. The Quality Mercury Spitfire gives faster acceleration & superior holding ability for tight turns and dirty water. Wiring Harness for Johnson/Evinrude Outboards Fits 1986-1987 150, 155 and 175 HP engines. AUSTRALIA WIDE: All items will be sent through Australia Post Eparcel, we offer Road freight and Express delivery options. Outboard motors 30 HP and higher, and Sterndrives require the most attention to correct propeller selection. Runs smooth otherwise. But you also need compression and the correct spark timing. Lighter weight and increased volumetric efficiency, plus increased displacement equals thrilling performance and makes our 90 hp a top performer in acceleration and torque. (It costs much less to replace a Comprop than a lower unit. The post caught my eye. 2001 johnson 70 hp outboard not idling and hard to start again. DOWNLOAD a Mercury/Mariner outboard troubleshooting repair manuals straight to your computer in just seconds and fix your problems now!. to thunderracing All I can tell you is I have been warned repeatedly that they will not stay together so well. For example, inflatable boats average between 9 and 25 HP, while pontoon vessels can go as high as 300 HP, depending on the model. It does however have an overheat temp sender connected to the horn fitted inside the control box. 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