Section 03 TROUBLESHOOTING
Subsection 02 (ENGINE)
MMR2000_116_03_02A.FM 03-02-1
ENGINE 0
The following chart is provided to help in diagnosing the probable source of troubles. It should be used
as a guideline.
SYMPTOM ENGINE BACKFIRES.
CONDITION NORMAL USE.
Test/Inspection 1. Check spark plug.
a. Carbon accumulation caused by defective spark plug.
Clean carbon accumulation and replace spark plug.
2. Check ignition timing.
a. Timing is fixed but ensure that woodruff key holding flywheel is in place.
SYMPTOM ENGINE DOES NOT OFFER MAXIMUM POWER AND/OR DOES NOT REACH
MAXIMUM OPERATING RPM.
CONDITION NORMAL USE.
Test/Inspection 1. Check spark plug condition.
a. Fouled spark plug(s).
Replace.
2. Check if there is water in fuel.
a. There is water in fuel.
Drain fuel system, then fill it with appropriate fuel.
3. Check governor adjustment.
a. Governor out of adjustment.
Readjust.
4. Check carburetor adjustments and cleanliness.
a. Inadequate carburetor adjustments or dirt accumulation.
Adjust according to specifications (refer to TECHNICAL DATA 10) or clean.
5. Check valve clearance.
a. Valve clearance incorrect.
Readjust.
6. Check valve condition.
a. Valve or valve seat worn or damaged.
Inspect and correct.
7. Check track adjustment.
a. Too much tension and/or improper alignment.
Align track and adjust its tension to specifications (refer to TECHNICAL DATA 10).
To Next Page
Loading...
Need help?
General
