Johnson 150 v6 outboard

Aug 1, 2008 · Silver Medal Contributor. "on yours,since they r all 90----i would de-carb it -2-3 times....this is the process of spraying fluid in thru carbs,while idling about 900 rpm.1 full can each time...then let it sit for about 3 hours,...do again,..when done,..take it out for a high spd run,..then inst new plugs...this will bring the comp up on alot ...

Johnson 150 v6 outboard. With 2-stroke and 4-stroke gasoline engines as well as electric trolling motors existing in their product portfolio, Johnson was associated in the construction of boat motors throughout the 20th century. Spending much of its history within the Outboard Marine Corporation, the Johnson name was eventually past to Bombardier which discontinued ...

Common problem with these large older 2 stroke outboards, I have found the four stroke market, price of fuel etc. is making them obsolete, unlike the smal...

Built to replace 150HP and 175HP V6 Outboard Engine Wires; Made from premium-quality materials to provide durability; Manufactured to high standards for safe and reliable performance; View More DetailsToby Hines of TobysDocumentaries shows how to start a Johnson/Evinrude GT150 pro series V6 2 stroke or 2 cycle engine when its cold. Incorrect technique can ...Oct 12, 2020 ... Johnson 150 issues with electronics. ... Johnson 150 timing issues ... 1999 Johnson 200 HP V6 outboard motor - Setting ignition timing - Timer base.Best price guarantee. Expert live support. 50+ years of serving boaters. Huge selection of OEM parts - from 1950 to 2024. Most parts in stock - Same day fulfillment. Where is my …1993 Johnson Fast Strike 150 on a 1993 Glasstream Pro 1850Oct 17, 2010 · Posted October 18, 2010. push that handle all the way up which should put the boat in fast idle. let it run at about 1500 to 2000 rpm without the prop engaged to get the motor warmed up. after that put the boat in idle and if it shuts off after a few seconds in idle then do the fast idle for another minute. New Johnson & Evinrude 150-175 HP 60º Carbureted 6-CYL Powerhead Rebuild Kit / Marine Parts Warehouse ... Featuring all the parts needed to effectively rebuild an outboard powerhead in one convenient package, ... New WSM / Johnson & Evinrude 2007-UP 150-175 HP V6 ETec Powerhead Rebuild Kit $1,661.97. Choose ...

For years, Johnson Outboard Motors has been a staple in the boating community due to their reliable engines and strong performance. The Johnson 150 outboard has been a popular choice for boaters, converting impressive power output with smooth performance and durability. However, as with any engine, Johnson 150 …Our services include: • NEW FOR 2012 COMPUTER DIAGNOSTICS. • Engine Tuning. • EFI (Electronic Fuel Injection) Service and Repairs. • Personal Watercraft (PWC) Service and …Re: Johnson 150 Ocean Pro Carburaters I have a '98 Johnny 150HP V6, which is pretty similar to yours. Each of it's six carbs has an idle mixture adjustment. It is likely that due to some dirt in the carb idle passages or even someone messing with the adjusters, the mixture is a bit off. I had a problem very similar to yours.Engine Repair and Maintenance. Johnson & Evinrude Outboards. For testing purposes, I need to know the right fuel/oil ratio for this outboard engine, plus the Champion spark plug for it. It uses the NGK BZ7HS-10, not...Side Mount Remote Control For 1979 Johnson Outboard 150 150tl79c 150txl79c Boat. $209.99. Seeking Johnson 150 Controls & Steering online? Locate Johnson 150 Controls & Steering on sale below with the largest variety of Johnson 150 Controls & Steering anywhere online.

The original company that made Johnson inboard motors and outboard motors was the Johnson Brothers Motor Company of Terre Haute, Indiana, United States. They started building inboard 2-cycle marine engines in 1903 in a barn behind the house, along with matching boats. By 1908, they were making V4, V6, V8, and V12 aircraft and marine engines. 64. Oct 8, 2009. #3. Re: Questions about a 1989 Johnson GT 150 VRO. these motors have a factory compression around 5 or 6 to 1 so it has good compression (mine has about 85 across the board, ran like a champ). change impeller (drop lower unit, pump is on the shaft, you need to disconnect shift linkage in front of the block, kind of under it - a ...The Johnson Brothers Motor Company was started by four brothers, Lawrence, Julius, Louis, and Harry. Within 10 years, they were building both marine and aircraft engines. In 1922, they started the Johnson Outboard Motors company. In 1949, Johnson introduced its revolutionary Sea Horse motor, which incorporated many features that are standard on ...Nov 27, 2010 · Nov 27, 2010. #3. Re: Recommeded Spark Plug 150 Johnson. As seahorse 5 says the NGK plugs you have are not correct. The "R" in number indicates that they are resistor plugs, which are unsuitable for OMC ignition systems. The Champion "Q" series plugs have inductive, low resistance, suppression and are the ones you should be using. Sep 21, 2011. #2. Re: Johnson GT 150. If it truly had water in the crankcase for two years, the motor is junk, and will be seized up. So try to turn the flywheel with the spark plugs out and see if she turns. If it is seized, I would think the motor is worthless, except for perhaps the gearcase. E.How to bypass your VRO system in your Johnson outboard. I bought this 1996 Johnson 150 hp OceanRunner off of craigslist 3 summers ago for $2000. I'd say I've...

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The Outboard Marine Corporation is the worlds largest manufacturer of outboard motors. Its brands include Evinrude and Johnson, two of the most widely recognized names inthe boating industry. ... Both Ole Evinrude and Leo Johnson shared a love for the water, a passion for new ideas, and an indomitable spirit. Separately, bothmen achieved ...JOHNSON 150 HP ( The "Big" Problem ) INSIDE OUTBOARD'S. 9.17K subscribers. Subscribed. 345. 72K views 4 years ago. Common problem with these large …Feb 10, 2011 · Re: 1992 Johnson 150 V-6 Silver Star Series need advice. I have done two rebuilds on these motors and both indicated that the cylinders failed because of poor lubrication. However I don't think that this was a VRO failure. I think it was leaking at the carb or intake seals causing lean mixture conditions. Johnson Outboard Water Pump Removal and Installation. Please see web site for more help and parts. http://www.sterndrive.info/outboardmotor/id6.html

150STLCR GT150. This 150 horsepower Johnson outboard, manufactured in 1984, is a saltwater model. The engine weight is recorded at 381 lbs. This is a 6 cylinder model. The displacement for the pistons is 149.4. The bore for this outboard is 3.5 inches and the stroke is 2.58 inches. This engine has power steering and a electric-type starter.Your Johnson Evinrude model number is the key to finding the correct parts for your outboard motor. Model numbers are usually found on an ID tag on the mounting bracket. The model number will also help determine the "model year" of your motor. See our model number guides for help. Outboard Parts Inventory.The story of Johnson outboards begins on the Wabash River in Indiana. In 1908, 18-year-old Lou Johnson and his younger brothers, Clarence and Harry, built a small inboard marine engine to power their rowboat up the mighty Wabash from their home near Terre Haute. The sons of a railroad blacksmith, the boys made their own patterns and …If you are in the market for a reliable and high-performing outboard motor, look no further than Mercury. Known for their exceptional quality and durability, Mercury outboard motor...I have an 84 Johnson 150HP V6 Outboard, The starter is missing 3 of the 8 teeth. It still starts, just sounds weird while the starter is cranking but when starts, ... Johnson 150 HP Compression OMC came out with the low compression (bathtub) heads starting in 1983.Re: Johnson 150 Ocean Pro Carburaters I have a '98 Johnny 150HP V6, which is pretty similar to yours. Each of it's six carbs has an idle mixture adjustment. It is likely that due to some dirt in the carb idle passages or even someone messing with the adjusters, the mixture is a bit off. I had a problem very similar to yours.Re: evinrude Johnson 60degree or 90 degree. Prior to around 1986, the 90 degree crossflows were hp rated at the crank. After that, they were rated at the prop, meaning the crank hp was actually 7-10% lower vs the prop rating.. Those 115 looper engines are all prop rated and will outrun an earlier 115 crank rated engine.Evinrude V6 Engines 150 HP. Hail to the Chief. NOW EVEN MORE HORSES. AND ALL THEY WANT TO DO IS RUN. ... Nautical ventures is proud to offer Evinrude E-TEC outboard motors for sale at discounted prices. ... Evinrude/Johnson XD100™ Oil; 150 HP (112 kw) @ 5650 RPM; 5300-6000 RPM;May 12, 2015 · Buy OMC/JOHNSON/EVINRUDE 135, 150 HP, ... UanofCn 5001594 Water Pump Repair Kit for Johnson Evinrude V4 V6 V8 85-300 HP Outboard Motor Parts Sierra Marine 18-3392. TOP SELLING ITEMS FOR YOUR 1985 Outboard 150 [ J150STLCOH ] View parts diagrams and shop online for J150STLCOH : 1985 Outboard 150. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available. Try the search, this has been talked about before. As I recall the GT is one of the best normal OMCs as far as use on a speedyboat. Look it up and you can find …This item: New Starter Compatible With Evinrude Johnson OMC V6 Outboard Engines 150-235 HP 387094, 395207, 0814240, 585062, 586288, 777693, 778992, SAB0003, 41021006 $49.95 $ 49 . 95 Get it as soon as Monday, May 6

OBO Giant Fathom 2 Medium 27.5. Owasso, OK. $60. Avalon Dual Shox Series 2.0 Bicycle. Adair, OK. 150 Johnson for sale ran when taken off boat 2 or 3 months ago… wanted one with more power. Will need controls which aren’t much Has a couple hundred...

Your Johnson Evinrude model number is the key to finding the correct parts for your outboard motor. Model numbers are usually found on an ID tag on the mounting bracket. The model number will also help determine the "model year" of your motor. See our model number guides for help. Outboard Parts Inventory. Aug 21, 2023 · The Johnson Brothers Motor Company was started by four brothers, Lawrence, Julius, Louis, and Harry. Within 10 years, they were building both marine and aircraft engines. In 1922, they started the Johnson Outboard Motors company. In 1949, Johnson introduced its revolutionary Sea Horse motor, which incorporated many features that are standard on ... Johnson - Evinrude 0438562 Fuel Pump Assembly. $112.49. $104.49. Add to Cart. Johnson Fuel Pumps. Boat fuel pumps carry gas from the fuel tank to each engine cylinder. These pumps affect how your outboard burns fuel, and therefore, how much power it can generate. Fuel pumps work under high pressure so over time, even Johnson fuel pum …Sep 16, 2016 ... On it's maiden voyage, the Evinrude 150HP outboard died. In fact in the first ten minutes. In this video I begin the process of diagnosing ...The Insider Trading Activity of Johnson Lloyd Emerson on Markets Insider. Indices Commodities Currencies StocksThis kit contains everything you need to rebuild the water pump from 1991 - 2010 Johnson Evinrude V4, V6, V8 outboards and OMC Quiet Rider Sea Drive models 25" and 30" shaft and models with relieved gear case. May also be used for any V4 - V6 motor from 1980 to 2010 with flat spot for impeller drive key.150STLCE GT150. This 150 H.P. Johnson outboard motor was made for the saltwater environment. The piston displacement is 149.4. The bore and stroke are 3.5" and 2.58" respectively. This outboard has starter of the electric type and power steering as well. Your engine's RPM range is important in choosing the right propeller for a given application.On top of the head u will see a round plug, like a freeze out plug. It will have two sets of numbers. One will star like this: J150. It might be J150STL or J150TL. Once u get this number call ur local boat dealer and give them the number and ask for the year of the motor. I am going to say between a 84-86. Good Luck.Re: Johnson 150 Ocean Pro Carburaters I have a '98 Johnny 150HP V6, which is pretty similar to yours. Each of it's six carbs has an idle mixture adjustment. It is likely that due to some dirt in the carb idle passages or even someone messing with the adjusters, the mixture is a bit off. I had a problem very similar to yours.

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This is important in determining a suitable propeller pitch. When in doubt, dealer assistance is suggested. • Prop installation, inspection and boat operation all need to be done in a safe and responsible manner. Solas propeller charts for Johnson 150hp equipped boats, with all blade options. (V6 15 Spline) New (Other): Johnson. (2) $47.70. or Best Offer. $7.00 shipping. Only 2 left. Get the best deals on Johnson 100-200HP Complete Outboard Engines when you shop the largest online selection at eBay.com. Free shipping on many items | Browse your favorite brands | affordable prices. The first step of the link and sync procedures is to check (set) the timing pointer using a TDC dial gauge. I don't have a TDC dial gauge and before I go out an buy one and figure out how to use it, I thought I would check whether this step is important enough in my circumstances to do so. The motor (1996 Mercury 150hp carbed V6) is ten …This Evinrude lower unit fits V6 engines, 150, 175, 200, 225 HP and comes with a 3 year warranty. Buy a new Evinrude Johnson lower unit at USBoatworks. Price=$1,145 less $200 potential core rebate*= $ 945 final cost Aftermarket. 3 Year Warranty. Fancy. Outboard Powerhead for a Johnson-Evinrude V6 60 deg. Carb.150-175 hp outboard 1994-2006. Price includes refundable core charge and free shipping. -Determine your outboard's year and horsepower and select correct option. -Please include model number in "Special Instructions" box upon checkout to guarantee accuracy. I removed the lower unit of my 2000 Johnson Ocean Pro 150 outboard. Don't forget to remove the Shift Retention bracket prior to remove the lower bolts, other...Removing the lower unit on my Johnson GT 150 so that I can replace the water Impeller150STLCE GT150. This 150 H.P. Johnson outboard motor was made for the saltwater environment. The piston displacement is 149.4. The bore and stroke are 3.5" and 2.58" respectively. This outboard has starter of the electric type and power steering as well. Your engine's RPM range is important in choosing the right propeller for a given application. ….

Re: Johnson 150 Ocean Pro Carburaters I have a '98 Johnny 150HP V6, which is pretty similar to yours. Each of it's six carbs has an idle mixture adjustment. It is likely that due to some dirt in the carb idle passages or even someone messing with the adjusters, the mixture is a bit off. I had a problem very similar to yours.Johnson Evinrude OMC New OEM Outboard Fuel Filter Assembly, 433190, 0433190. $13.34 $ 13. 34. Only 7 left in stock - order soon. Ships from and sold by Doug Russell Marine. ... Pack Carburetor Carb Repair Rebuild Kit Replacement for Johnson V4 V6 90 100 105 115 150 175 HP 18-7247 436852 438996. OEM BRP Johnson Evinrude …Mar 19, 2007. Messages. 3,043. Jun 20, 2007. #3. Re: Evinrude 150 V6 Compression? I agree, I never heard of a 2 stroke that runs with that low of compression. The only thing that gets me is that I heard it from not only the seller but a local marina and boat shop as well. I think the motor is toast and needs a rebuild, even if it does run and ...Oct 30, 2012 ... How to Winterize an Outboard boat, step by step guide in HD for 96' Johnson 150 Motor. 322K views · 11 years ago ...more ...When it comes to purchasing a new outboard motor for your boat, Yamaha is a brand that stands out. Known for their reliability and performance, Yamaha outboard motors are a popular...Feb 17, 2020 ... 17:52. Go to channel · Johnson 150 HP V6 Outboard With a Broken Crankshaft ? Brandon's Garage•13K views · 5:41. Go to channel · 1997 Johns...With 2-stroke and 4-stroke gasoline engines as well as electric trolling motors existing in their product portfolio, Johnson was associated in the construction of boat motors throughout the 20th century. Spending much of its history within the Outboard Marine Corporation, the Johnson name was eventually past to Bombardier which discontinued ...In the world of boating, maintaining and repairing your outboard motor is essential for optimal performance on the water. However, finding the right parts for an older or obsolete ...Lifting Eye. Easy to install as it bolts directly to the flywheel. For lifting Johnson / Evinrude V4 & V6 Outboard Powerheads Vertically Only. This tool is NOT intended for lifting the whole outboard!. If you need to lift the entire outboard, the 906-13-156 is a heavier duty tool and is required for the extra weight associated with lifting the complete outboard! Johnson 150 v6 outboard, Johnson & Evinrude Outboards . Strange Bogging / Hesitation Issue with Evinrude 150XP V6 Outboard ... Engine: 1987? Evinrude 150XP V6, 2-stroke, 3 carbs, VRO disabled (premix), hours unknown, not ran in about 4 years, recent compression test all cylinders +/- 2psi from average but average was around 77psi ... With this being said …, replacing the carb bowls and gaskets to correct a fuel leak in my 1993 johnson 150 J150eletg, Aug 1, 2008 · Silver Medal Contributor. "on yours,since they r all 90----i would de-carb it -2-3 times....this is the process of spraying fluid in thru carbs,while idling about 900 rpm.1 full can each time...then let it sit for about 3 hours,...do again,..when done,..take it out for a high spd run,..then inst new plugs...this will bring the comp up on alot ... , 28,762. Mar 7, 2011. #2. Re: Fuel consumption of a 150-175 Johnson Ocean runner (Carbed) 10% of rated HP for fuel consumption on any carbed two stroke. That means 15 - 17 g/hr. Even the EFI/DFI engines fall into the same range so newer isn't necessarily more economical at WOT. Some advantage in the lower RPM ranges., 1997 Johnson 150 HP. J150EXEU Ocean Runner. This 150 H.P. Johnson outboard motor was made for the saltwater environment. The piston displacement is 158. The bore and stroke are 3.6" and 2.58" respectively. This outboard has starter of the electric type and power steering as well. Your engine's RPM range is important in choosing the right ... , Feb 25, 2017 ... 209K views · 17:52. Go to channel · Johnson 150 HP V6 Outboard With a Broken Crankshaft ? Brandon's Garage•13K views · 21:42. Go to channe..., CDI 113-2285 CD2 Power Pack for Johnson & Evinrude Outboard Engines CDI replacement CD2 power pack for 2 Cylinder Johnson/Evinrude Engines with a 2 Wire Timer Base. ... Includes: 113-4985, 133-6343 & 931-4921 Fits: 105 Jet 1991-2006 150 1991-2006 175HP... Add to Cart Quick view Add to Cart. CDI 113-4783 Johnson Evinrude …, Pair 1999 Yamaha 150 hp Carbureted 2-Stroke 25" Dual Twin Outboard Motors V6. Pre-Owned: Yamaha. $7,900.00. ... 1987 Johnson OMC 150 hp Outboard Boat Motor Hood Cowl Rubber Seal Gasket Cover. New (Other): Johnson. $83.99. ... Hit the Water With a 150-Horsepower Outboard Complete Engine. When it comes time to head out on 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 you..., Usually ready in 24 hours. View store information. Delivery and Shipping. $199.95. View details. Description. VRO Replacement Fuel Pump Assembly. This pump assembly is designed to be a replacement for the expensive VRO fuel pump. We carry 4 different variations of these pump assemblies to fit all models with VRO fuel pumps., Toby Hines of TobysDocumentaries shows how to start a Johnson/Evinrude GT150 pro series V6 2 stroke or 2 cycle engine when its cold. Incorrect technique can ..., Your Johnson Evinrude model number is the key to finding the correct parts for your outboard motor. Model numbers are usually found on an ID tag on the mounting bracket. The model number will also help determine the "model year" of your motor. See our model number guides for help. Outboard Parts Inventory. , Jul 20, 2013 · How to bypass your VRO system in your Johnson outboard. I bought this 1996 Johnson 150 hp OceanRunner off of craigslist 3 summers ago for $2000. I'd say I've... , When it comes to purchasing a new outboard motor for your boat, Yamaha is a brand that stands out. Known for their reliability and performance, Yamaha outboard motors are a popular..., For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer. iboats.com Exclusives. Save up to 70% on stainless & aluminum boat propellers for your 150 HP Johnson Outboard V6 1978 - 1990. Quality props from Michigan Wheel, Solas, Turning Point, Stiletto, Quicksilver., May 18, 2013 · May 18, 2013. #4. Re: Wiring tach from Johnson controls. The rubber plug you describe is there for the plug in type tachometer... it simply plugs in and the tachometer works. On the other side of that plug is a: Purple Wire: 12v supply for the tachometer. Gray Wire: Sensor lead for the tachometer. Black Wire: Ground lead for the tachometer. , TOP SELLING ITEMS FOR YOUR 1987 Outboard 150 [ J150GTLCUR ] View parts diagrams and shop online for J150GTLCUR : 1987 Outboard 150. Offering discount prices on OEM parts for over 50 years. FAST $4.95 shipping available. , Stress on cavitation plate johnson 150hp: 5: 1973 powerpack: 3: 19922006 150 175 hp 60 degree power pack failure: 2: Power pack advice needed: 6: ... Power Pack (Ignition Module) for Johnson Evinrude Outboard. A power pack, or ignition module, is the device that controls the timing of ignition functions on all engine cylinders. Some power packs ..., Jan 8, 2018 ... Clean Used 2004 Evinrude 150 HP V6 2 Stroke 25" Outboard Motor. Model number E150FPXSRS. Serial # 05052035. Weight - 427 lbs. 110-120 psi..., Mar 19, 2007. Messages. 3,043. Jun 20, 2007. #3. Re: Evinrude 150 V6 Compression? I agree, I never heard of a 2 stroke that runs with that low of compression. The only thing that gets me is that I heard it from not only the seller but a local marina and boat shop as well. I think the motor is toast and needs a rebuild, even if it does run and ..., 2001 Johnson/Evinrude 150-175 Brand: Johnson Prop Shaft Horsepower: 150hp ... Parts Catalog 5001689. Owners Manual 0214863. TOP SELLING ITEMS FOR YOUR 2001 Outboard 150 [ J150JPLSIF ] Johnson/Evinrude, OMC. Block to lower cover Seal, Starboard. - Z 0335500. USD 36.26 2019-01-01. $36.26. See details Johnson/Evinrude, …, 75 HP - 150 HP. To sort chart by column (Year, Model, etc) click on the desired column heading. You may ignore any letters before the horsepower designation, and those after any of the following model numbers that match yours (e.g. your 6 HP model # BJ6R4SOSM would match 6R4SOS in the chart, ignoring the " BJ " and " M "), We attempt to repair a fuel leak on my 1993 150 johnson J150ELETG., Johnson® and Evinrude® Outboards. ... Refer to Outboard Installation Guidelines P/N 0508167. [1] To replace the light bulb, pry out light socket cover (F). Turn bulb socket counter-clockwise and pull out. Replace with a No. 194 bulb, P/N 0125432. 0174983 - Tech Series Tachometer ., #1. I completed the below work on this 1986 Johnson 150 HP crossflow V6 engine (J150TXCDC) in the off seasons over the past two to three years. It has been …, 1984 Johnson/Evinrude 150 Brand: Johnson Prop Shaft Horsepower: 150hp ... Accessory Parts Catalog 0174182. TOP SELLING ITEMS FOR YOUR 1984 Outboard 150 [ J150TLCRD ] Johnson/Evinrude, OMC. COVER, Thermostat 0321013. USD 32.55 2019-01-01. $32.55. See details Johnson/Evinrude, OMC. Bypass Cover, Upper 0328005. USD …, Jun 29, 2011. #1. My Johnson 150 Faststrike (1994, J150GLERA) is only firing on half it's cylinders. After this problem first started I changed the power pack - didn't help. I also disconnected the shift switch - didn't help. Checked the compression in all 6 cylinders - all good. Checked the spark - 1 side was good, the other had nothing., 7. Jun 14, 2011. #1. -I have 2005 Johnson 150 V6 outboard that stalls around 2000 RPM while in gear in the water. -It set up for about a year, then I ran it, it ran like crap. -I changed the plugs (they looked wet), pumped out the old gas, put it new gas with sea foam added and ran it for about 2 hours in the water. Again ran like crap., Your Johnson Evinrude model number is the key to finding the correct parts for your outboard motor. Model numbers are usually found on an ID tag on the mounting bracket. The model number will also help determine the "model year" of your motor. See our model number guides for help. Outboard Parts Inventory., We offer current Johnson Evinrude OEM parts, the largest selection of old stock OEM parts and quality discount aftermarket parts by Sierra Marine, Mallory Marine, CDI Electronics and more. Lookup 150 hp 1996 Johnson Evinrude parts by models and buy discount parts from our large online inventory., 28,762. Mar 7, 2011. #2. Re: Fuel consumption of a 150-175 Johnson Ocean runner (Carbed) 10% of rated HP for fuel consumption on any carbed two stroke. That means 15 - 17 g/hr. Even the EFI/DFI engines fall into the same range so newer isn't necessarily more economical at WOT. Some advantage in the lower RPM ranges., When it comes to purchasing a new outboard motor for your boat, Yamaha is a brand that stands out. Known for their reliability and performance, Yamaha outboard motors are a popular..., Re: Idle adjustment Johnson 150. If the idle speed is 1050-1100 either in gear [ in the water] or in neutral then the engine is stuck in 'QUICKSTART' The system that increases idle rpm when the engine is cold. This can be caused by an overcooling issue [ thermostats stuck open] or a defective temp sensor.