2005-2011 Honda Recon TRX250TE/TM service manual, Page 393Get this manual
TROUBLESHOOTING
POOR PERFORMANCE AT LOW AND IDLE SPEED
1Carburetor Pilot Screw Adjus tme nt Ins pection
Check carburetor pilot screw adjustmentIs the pilot screw properly adjusted? NO
- Adjust the carburetor pilot screw (See Section 5)
- GO TO STEP 2
2Carburetor Intake Inspection
Check fo leaking carburetor int ake pipeIs the carburetor intake pipe leaking7 YES
_Faulty insulator O-ring Damaged insulator
- GO TO STEP 3
3 Spark Test
Perform spark test, inspecting for weak or intermittent sparkIs the spark quality good? NO _Faulty carbon or wet fouled spark plug