Why is my 1986 Yamaha ATV not working?
Your 1986 Yamaha ATV’s carburetor is responsible for keeping the mixture of fuel and air in your engine at the proper level. If the carburetor stops doing its job, your ATV’s engine will either have a lean mixture — not enough fuel for the air involved — or a rich mixture — too much fuel for the air involved.
How to adjust the carburetor on a 1986 Yamaha ATV?
Adjust the pilot screw using your screwdriver, if the symptoms of carburetor trouble happen when the throttle is between zero and one-quarter. Let the engine idle and turn your pilot screw clockwise (or in) until the idle gets rough. Turn the screw counterclockwise (or out) through the range of smooth idle, until it starts to idle roughly again.
What causes a 2 stroke engine to not start?
“Air” is usually never the problem. I have only once in my life experienced air being the problem with a 2 stroke engine not starting. It was an old snowmobile that had no air filter and it had sucked a piece of plastic sheeting material that came loose from under the hood into the carburetor.
Why does my Yamaha ATV make a sputtering sound?
If you have a lean mixture, you’ll hear your engine sounding like it’s revving higher, but you won’t see a similar increase in power. If it’s too rich, your engine will make a sputtering sound, or act like the power is coming and going.
Your 1986 Yamaha ATV’s carburetor is responsible for keeping the mixture of fuel and air in your engine at the proper level. If the carburetor stops doing its job, your ATV’s engine will either have a lean mixture — not enough fuel for the air involved — or a rich mixture — too much fuel for the air involved.
Do you have Yamaha outboard engine problems and answers?
It helps if you start the headline with your Yamaha outboard engine make/model number or boat make/model number. Save the problem description to the text, more detail means better answers. Do You Have Yamaha Outboard Engine Problems?
“Air” is usually never the problem. I have only once in my life experienced air being the problem with a 2 stroke engine not starting. It was an old snowmobile that had no air filter and it had sucked a piece of plastic sheeting material that came loose from under the hood into the carburetor.
What was the weight of a 1986 Yamaha ATC?
The Yamaha ATC came from the factory with front and rear drum-brakes and weighed in (dry) at 258lbs. Not to be outdone, Honda struck back with its TR200 Fat Cat ATC the following year in 1986.