my 02 scrambler 400 2x4 has been acting up and cant figure out what it is,sometimes when i pin the gas it will bog down to almost killing the motor and wont stop bogging untill i let off the gas but then i can pin it again and it will go fine..its pretty much stock except for the fmf pipe and silencer,v-vorce reeds and a k&n filter that was just washed and oiled and the plug is brand new..can anyone help?

 

someone must have some thoughts?

 

Have you cleaned your carb?? Check your throttle linkage as well. Something may be sticking.

 

Yep, like Rhonda said, also make sure the throttle cable (ETC) is adjusted correctly. If you have old gas, get rid of it. Check the oil pump adjustment and the choke adjustment. But... make sure the ETC is correct first.

 

if i only knew how to do that lol..if i buy a mannual will it tell me?

 

I would recommend a repair manual, the owner's manual is not very detailed. The repair manual on the other hand, takes you step-by-step through a complete tear down and rebuild of the complete atv. It also includes troubleshooting almost all problems you could run into. It is a little pricey, but well worth it.

 

is the etc easy enough to adjust with a manual or should i take it to the dealer and let him play with it?

 

You can do it at home. If you have the plastic cover over your throttle housing then pop it off, loosen the cable jam nut, and adjust the cable until the contacts are held in by the tension of the cable. If you have a metal cover on the throttle housing, remove the 3 screws and adjust the cable until the contacts are not touching. You will have to look inside the housing and move the throttle a bit to see the contacts that I am talking about. Either way, after you have the correct adjustment, you should have a slight amount of play (1/16"- 1/8" at the end of the throttle lever) in the throttle before the engine speed increases and make sure by turning the steering wheel, lock to lock that you do not have the cable adjusted too tightly. Do this while in neutral with the atv running and if the engine speeds up while turning the steering wheel, then you have it adjusted too tight.

 

thanks for the reply..im going to look at it later and see what i can do, the job sounds easy enough so ill see what happens..where is the best place to buy a manual anybody know?

 

I think you can purchase one from PurePolaris or your dealer is also a good source for a repair manual.