If your 115 Yamaha SHO VMAX outboard engine is experiencing RPM fluctuations at speeds over 3500 RPM, it may be due to a few different factors. Here are some things to check:
If you are unable to diagnose and fix the issue on your own, it may be necessary to take the engine to a professional technician for further diagnosis and repair.
SOURCE: wont rev over 3500 rpm
You should go buy a Haynes or Chilton manual to figure this out. Costs about $15. There could possibly more than one reason for this happening. Anything posted in response could only be speculation.
SOURCE: High rpm after doing carb kit
This could be any one of a number of things. First, it could be a cable routing problem. Double check the routing and free play in the cable. Don't forget to check the free play with the handlebars turned to the locks both left and right. If you loose free play when turning the bars to the stops, add free play to the cable. Second, it could be an idle speed adjustment issue. Try turning the idle down. See if the engine speed responds to turning the idle down.
The next thing to check is proper assembly of the carbs. Double check your work and make sure they are assembled correctly.
The next thing to check would b the intake boots for air leaks. You can do this by starting the bike and letting it run, then spary contact cleaner at the rubber intake boots.If the engine speed alters either way, they are leaking and you can decide if you want to replace them or not. If you intend to keep the bike, you need to replace them.
Testimonial: "Thanks for your help. I found the problem, it was the intake boot."
SOURCE: 94 yamaha vmax 600. How do you tighten the track??
you mean v max 1200? Losen rear wheel, align with a straight bar. Make sure the drive shaft spin freely
SOURCE: Our Yamaha clavinova CLP-115 is buzzing, even with
Without power to the unit no sound should be generated. Make sure there are no other connections.
MAYBE you have a wall transformer behind it that is buzzing. MANY wall transformers develop buzz.
Another source is flourescent lights and even some of the low voltage halogens have noisy transformers in the base.
SOURCE: backfires when reving down. high RPM then let off
lean out the system by adjusting the mixture screw. either less fuel or more air. also check to make sure your air filter is clean, that can also cause that problem.
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