Section 03
TROUBLESHOOTING
Sub-Section 01
(ENGINE)
03-01-5
SYMPTOM
ENGINE DETONATION AT MAXIMUM RPM.
CONDITION
NORMAL USE.
Test / Inspection
1. Check which type of fuel is used.
a. Octane number is too low and / or alcohol level is too high.
Use recommended fuel type.
2. Check spark plug type.
a. Improper spark plug heat range.
Install recommended spark plug(s) (refer to TECHNICAL DATA 10).
3. Check exhaust system.
a. Too much restriction.
Replace.
4. Check ignition timing.
a. Timing is too advanced.
Adjust according to specification (refer to TECHNICAL DATA 10).
5. Check carburetion.
a. Fouled and / or improper carburetor components.
Clean or replace according to specification (refer to TECHNICAL DATA 10).
6. Check compression ratio and squish area.
a. Compression ratio is too high.
Install genuine parts.
SYMPTOM
ENGINE TURNS OVER BUT FAILS TO START.
CONDITION
NORMAL USE.
Test / Inspection
1. Check switches.
a. Ignition switch, emergency cut-out switch or tether switch is in the OFF position.
Place all switches in the RUN or ON position.
2. Check fuel level.
a. Mixture not rich enough to start cold engine.
Check fuel tank level and use primer.
3. Check spark plug.
a. Defective spark plug (no spark).
Replace spark plug(s).
4. Check amount of fuel on spark plug.
a. Flooded engine (spark plug wet when removed).
Do not overprime. Remove wet spark plug(s), turn ignition switch to OFF and crank
engine several times. Install clean dry spark plug. Start engine following usual
starting procedure.
5. Check fuel lines.
a. No fuel to the engine (spark plug dry when removed).
Check fuel tank level ; turn fuel valve on if applicable ; check fuel filter, replace if
clogged ; check condition of fuel and impulse lines and their connections.
6. Check engine compression.
a. Insufficient engine compression.
Replace defective part(s) (ex. : piston(s), ring(s), etc.).
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