HELP

[harvey lee]

I have a Cat 400, 4x4 and it has run great for years and now I have a problem. Seems when I start the wheeler it idles fine. Now, when I shift it into gear, I have to give it some gas before it goes. It will not idle in gear and when I shift intio gear there is a little klunk noise. Once I give it gas as I shift it will go but I have to give it enough gas that the wheels spin some. Shifting gears after that seems to be no problem. Is it something in the tranny???

[Ryan_V]

Maybe time to trade up to a new Cat???!!! I'd have to guess something in the carb, but I am by no means knowledgeable about these things. it seems as though it may be having trouble under load...When I have problems, I usually start with the carb, its the easiest to work with. Yamaha makes a product call 'ring free' that is supposed to be excellent in your gas, keeps the carb clean and keeps other components in good working order.

[harvey lee]

The 4-wheeler had a new carb kit, vaves adjusted and a total check up 10 miles ago and was running just fine. There is a klunk when you shift inti gear and you must have the throttle down a bit so it wont kill. I was thinking more in the line of the manual tranny but I dont know. I guess a piece of dirt could have got into a jet but I cannot understand why the klunk noise. Its like there is a little play in the gear and it slaps or something. I know about zero in regards to 4-wheelrs but can work on cars fine.