* On top of its impressive speed, it features tech unheard of in its class, including a long-track intake system, free-flow exhaust and knock sensor. Engine devlopes only 5200 RPM's at full throttle with top speed under 30 mph. Re: 115 Yamaha Overheats only at high RPM I had roughly the same as you with an older 115 Yamaha. That and a host of great features and benefits means the new EFI F115 is poised to carry on in the Yamaha line as one of the company's best-selling models. does not idle at times. This has also affected rpm at high speed. Re: 2003 yamaha 115 4 stroke bogs down, misses badly above idle Also want to add. about 130 hours on motor and about 10 years old. Yamaha 115 HP Four Stroke. Yamaha Outboard Missing Forum Topics. It will run up to 4800 rpm and within a minute is has bogged back down to 37-3800 rpm. Low speed idle started creeping up and within 2 days had gone from 800rpm in neutral to 1900-2100rpm in neutral. I have a 2002 F115 four stroke Yamaha. I put in a gas line water separator filter canister, new fuel, … Yahama 115 outboard rpm fluctuations Not rated yet I own a Yahama 115 outboard. When we pump the ball the engine restarts and runs for awhile. Replace the O-ring even if … The last trip out motor rpms fluctuated greatly until motor warmed up and … I have checked the fuel filters and fuel lines all our ok. it will start again but stalls if you dont get … read more Have a 2004 Yamaha 115 4-stroke that is missing and bogging at start. Nearly 900 hours of great operation until last month. The next generation of Yamaha's F115 is the lightest four-stroke 115-horsepower outboard available. difficult to crank. i have a 2002 yamaha 115 hp 2 stroke outboard motor that starts and runs at high rpm but will not idle. Yamaha Outboard Parts Lower Units Yamaha Propellers ... RPM Shaft Shift Smoke Solenoid Spark Plug Stalling Start Starter Stator Steering ... 115 HP 130 HP 140 HP 150 HP 175 HP 200 HP 225 HP 250 HP 300 HP Watch our Yamaha Outboard Fuel Pump Issues video above — in which we guide you through an outboard's fuel system — to troubleshoot possible issues that may be causing fuel pump problems. When I restart it, it wants to keep stalling unless you jam it to high speed quick. Yamaha Sterndrive* WOT RPM Range Chart; HP/Model Year Wide Open Throttle RPM Range* Gear Ratio; 3.0L(130HP) 1989-1993: 4200-4600: 4.3L(205HP) 1989-1993: 4200-4600 whenyou try to idle or run at low rpm it stalls. I have a 2004 Yamaha F115 TLRC 4 stroke that is loosing power at WOT. If you check marine gas you will find that it is ethonal free. I have a 2002 yamaha 115 hp 4 stroke outboard that stalls when you pull it to idle from high speed, not all the time, just now and then. The engine is cutting out after running the boat at high rpms. I have been to 2 authorized Yamaha … There is a noticable difference in the sound of the intake (air noise increases) as it starts bogging. ... 1997 Yamaha 115hp outboard. Been doing some "googling" on ethanol and it's becoming the worst enemy to outboards 2 and 4 strokes. NOTE: Although we're using a Yamaha 250HP motor as an example, the fuel system will be very similar on any modern outboard, regardless of brand or model. Prior to problem Engine hit 6000 RPM's and would do 50 - 55 mph at full throttle. The I-4 V MAX SHO 115 is Yamaha’s fastest 115-hp four stroke, ever, with a top speed of nearly 51 mph. The impeller was fine but the sealing O-ring had a very slight "nick" in it which allowed water to pass at high (3500-4000) RPM resulting in overheat alarm.

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