1986 yamaha moto 4 225 squawking trans

[acarr0642]

Was just wondering if anyone has had a problem with excessive noise from the trans on this model. I picked one up for my son and did a little work on it, and have it running great but there is quite a bit of noise coming from the dual range side of the trans. Does this require oil? I look in the owners manual and could not find anything, any help would be greatly appreciated.

[oxidized_black]

your engine oil works the transmission, best to use yamalube 4 or valvoline atv 4 stroke oil. given the age of the bike, it's probably do for some clutch work. maybe a new clutch and pressure plate...take the clutch cover off and jack it up securely on jack stands and run it, you should tell where the noise is coming from. in the service manual, you can only turn the clutch clockwise, try turning it counter-clockwise and if it moves, it's shot. also look at the front sprocket and the gears for wear.

Edited February 26, 2012 by oxidized_black

[fishingstar]

sounds like you have the same thing going on with yours as I do. sounds like the middle drive gear need repare.

Dan

[acarr0642]

I'll check both, Thanks guys.