Yamaha Big Bear 250 Manual Choke Adjust
#1
Yamaha Big Bear 250 Manual Choke Adjust
Recently purchased new 2009 Big Bear 2x4 250 ATV Manual Shift auto cluth. When starting the ATV cold, I experience cut-out problems.
I close the manual idle choke lever & press the electric start. The manual idle choke lever RPMs are not set high enough to start a cold engine or keep it running smoothly without it cutting off. If I increase the RPMs of the idle choke lever, (using the Idle Speed Throttle Screw), it warms up the engine but then the engine continues to race & does not automatically cut back when warm.
I frequently have to manually adjust the Idle Speed Throttle Screew to keep the ATV idling fast enough to start and then readjust it slow enough so it does not race but the engine runs smoothly without cutting out. This requires me to bend down to reach this throttle adjustment screw and its very difficult with two recently replaced knees.
The ATV engine RPM idle speed does not cut back automatically as the engine warms. Is this normal ? Has anyone else had similar problems and how did you deal with them ? I am probably doing something wrong. At 68 I recently had total knee replacements in both knees and the recovery is rough to say the least. Is there anything I can do on my own to make this adjustment without making the 3 hour trip back to the dealer ? I would also like to get a service manual for this atv, can anyone recommend a good one with easy directions and lots of blow-up detail diagrams.
Many Thanks
JOe
I close the manual idle choke lever & press the electric start. The manual idle choke lever RPMs are not set high enough to start a cold engine or keep it running smoothly without it cutting off. If I increase the RPMs of the idle choke lever, (using the Idle Speed Throttle Screw), it warms up the engine but then the engine continues to race & does not automatically cut back when warm.
I frequently have to manually adjust the Idle Speed Throttle Screew to keep the ATV idling fast enough to start and then readjust it slow enough so it does not race but the engine runs smoothly without cutting out. This requires me to bend down to reach this throttle adjustment screw and its very difficult with two recently replaced knees.
The ATV engine RPM idle speed does not cut back automatically as the engine warms. Is this normal ? Has anyone else had similar problems and how did you deal with them ? I am probably doing something wrong. At 68 I recently had total knee replacements in both knees and the recovery is rough to say the least. Is there anything I can do on my own to make this adjustment without making the 3 hour trip back to the dealer ? I would also like to get a service manual for this atv, can anyone recommend a good one with easy directions and lots of blow-up detail diagrams.
Many Thanks
JOe
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