1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 306Get this manual
IGNITION SYSTEM
TROUBLESHOOTING
Inspect the following before diagnosing the system- Faulty spark plugLoose spark plug cap spark plug wire connectionWater got into the spark plug cap (leaking the ignition coil secondary voltage)
No spark at plug
Unusual condition Low peak voltage
Probable cause (Check in numerical orderl
,The multimeter impedance is too low2Cranking speed is too low
Ignition coil primary