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raptor350 problem

EDUARDOFLORES2

By EDUARDOFLORES2
in Yamaha ATV Forum

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EDUARDOFLORES2 Explorer

EDUARDOFLORES2

Posted
Posted

well i have my 05 raptor 350 that needs some fixing when i want to start it up it will start fine with the choke on but whaen it gets warmed up and i take the choke it will idle and then it would die and wont start again so what could be the problem any help thank

DirtDemon Veteran

DirtDemon

Posted
Posted

There is a fuel screw on the bottom of the carb in front of the float bowl. This screw controls the idle fuel mixture. I would start by adjusting that. Has the quad been sitting for a long period of time? If so, your problem may be that the carb is gummed up, a good COMPLETE carb cleaning will help in that case.

ATVmechanic Enthusiast

ATVmechanic

Posted
Posted

Here are some possible things that could cause this type of condition:

Pilot screw maladjusted

Pilot jet, or air passage clogged

Air bleed pipe bleed holes clogged

Pilot passage clogged

Air cleaner clogged, poorly sealed, or missing

Fuel level in carburetor float bowl too high or too low

Fuel tank air vent obstructed

Carburetor holder loose

Air cleaner duct loose

But it sounds to me like it's fuel starved. Try what Dirtdemon said and also check your carb float. Yamaha carn floats get mesed up because of corrosion around the pivot pin, causing the float to get stuck in an incorrect or low position.

  • 3 weeks later...
yimcyco Apprentice

yimcyco

Posted
Posted

I 'd check my valve clearance if the carbs are okay and you clean out the pilot circuit and turn the fuel screw out 3 turns after seated then compression spit back throu carbs is stalling it out

also what is your idle set at sse between 1200 and 1500 rpm

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