Take it to a PROFESSIONAL Factory trained mechanic..they have the skills and expertise to figure out why this is happening. Make sure YOU tell the mechanic everything you can think of..your riding style,..do you drag race it?.. do "burnouts"?.. play in the mud..??..etc..etc..
He needs to know this!! (he will ask if he is really good!!)
SOURCE: Yamaha 2001 Raptor 660, sat for a year, wont
Your gas is bad. I have to change my all the time If your starter turns but dose not engage the starter barring is out DO NOT BUY STOCK. buy after market when you replace that. they
SOURCE: Yamaha 660 raptor dies when choke is tuned off
hello I am Vortash .. I would say your problem is either blocked idler jets or incorrect fuel mixture ( Air to fuel not correct ) take the bike to your local garage to use their air line unless you have a compressor of your own remove the fuel feed tank side and blow it through with the airline if this don't cure it you will probably need to have the carbs tuned to manufacturesr spec's , If you are more mechanicaly minded strip the idler jets out pass a fine strip of wire through them and replace .You can also get this problem if you have an air leak on the maniflod or the carb bowl etc hope this helps regards Vortash
SOURCE: Yamaha 2001 Raptor 660, need to clean my carb
Drain and replace the gas with fresh.
Remove the air cleaner and spray carb cleaner into the inlet. Work your throttle a little then put everything back together and try to start it.
SOURCE: 02 YMF660 Yamaha Raptor won't rev
dude i have a 02 rapter 660 the reverse light was on and it wasent reving i took the battery out and took the ecu out and i found some disconnected wires fixed them and every thing was fine. if you still have a probley with it check the ecu...
SOURCE: raptor 660 backfires and pops
Hi mate most common setting on almost all carbs would be 1.5 to 2.5 turns out. if runs better with less turns out than this range, then you need smaller pilot jet, or if needs more turns out then 2.5 you need bigger pilot jet. The glowing red header pipe is normal every yamaha I know will do this especially if left to idle for more than a minute... Regarding issue of popping this nearly always due to lean pilot circuit. first step clean pilot jet and or up size your pilot jet 2 or 3 sizes. just to clarify the turns out procedure make sure you are counting a full 360 degree turn out as 1 turn. I have seen in the past guys adjusting this air/fuel mixer and counting 180 degrees as 1 turn out needless to say it don't work... cheers mate hope it helps
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