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alexcross324

YFM225 1988 Overflow Hose leak lot of gas

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Hi all, my second post here :)

I got an old Yamaha 88 moto 4 and I have a problem with my overflow hose from the carb.

When I put the gas switch to ON a big amount of gas is leaking from the overflow...so I start using my quad with the gas switch to RESERVE wich is also leaking but less than in ON position.

I dont ride a lot..but in a week I empty my gas tank.

Strange.

I never clean my carb because Im new to quad world and dont have the service manual...so I need you point of view.

Thanks guys!

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Sounds like you either need a new petcock valve or the carb float is stuck low and would require a rebuild.

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Pick up a rebuild kit (Shindy, Moose, K&L are three brands readily available online), get  some wrenches (10mm, 12mm 14mm, 7mm) a GOOD #2 phillips screwdriver, a good straight blade 3/16" screwdriver, a can or two of carb cleaner (Berrymans is good stuff) and some safety glasses.

Remove the carb from the machine (2 10mm nuts at the intake and a #2 phillips on the clamp going to the airbox tube). Twist it out the LH side of the machine, use the 12 or 14 to remove the choke cable. Take it to a workbench to tear it down with the screwdrivers.

Be sure to wear the safety glasses when you're spraying the carb cleaner 'cause it will always shoot back into your eye.......

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