2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 356Get this manual
TROUBLESHOOTING 7Carburetor Inspection Check carburetor for cloggingAre the carburetor passages clear?
- Carburetor not serviced frequently enough
- GO TO STEP 8
8Spark Plug Inspection
Remove the spark plug and inspect it for fouling or discolorationIs the spark plug in good condition?
- Plug not serviced frequently enough
Spark plug has not the correct heat rangeGO TO STEP 9
9Engine Oil Inspection
Check the oil level and conditionIs the engine oil at the correct level and in good condition?
- Oil level too high
Oil level too low Contaminated oil