2007-2009 Honda TRX300EX TRX300X service manual, Page 350Get this manual
TROUBLESHOOTING
ENGINE DOES NOT START OR IS HARD TO START
1Fuel Line Inspection Check fuel flow to carburetorDoes fuel reach carburetor? NO _Clogged fuel line or strainer Clogged fuel valve Clogged fuel fill cap breatherGO TO STEP 2
2Spark Plug Inspection Remove and inspect spark plugIs the spark plug wet? YES Flooded carburetor Throttle valve open Dirty air cleaner Improperly adjusted pilot screw
- GO TO STEP 3
3Spark Test Perform spark testIs there weak or no spark? YES Faulty spark plug Fouled spark plug Loose or disconnected ignition system wires Broken or shorted spark plug wire Faulty ignition coil Faulty ignition pulse generator Faulty engine stop switch Faulty ignition switch Faulty ICM