Ski-Doo SUMMIT 583 1997 - Page 26

Section 02 TROUBLESHOOTING
Sub-Section 02 (ENGINE)
02-02-5
8. Check driven pulley.
a.Worn bushing and/or spring tension.
Replace spring and/or adjust its tension according to specifications
(refer to TECHNICAL DATA 09).
9. Check exhaust system.
a.Restriction.
Replace.
10. Check ignition timing.
a.Decrease in power due to retarded ignition.
Adjust according to specification (refer to TECHNICAL DATA 09).
11. Check engine compression.
a.Worn piston(s) and ring(s).
Replace (refer to TECHNICAL DATA 09 for specification).
12. Check engine cooling system.
a.Engine overheats. Improper fan belt tension.
Adjust fan belt (refer to TECHNICAL DATA 09).
b.Antifreeze level is low, cap fails to pressurize system or air circulates through lines.
Adjust level, replace cap or bleed cooling system.
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 09).
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 09).
5. Check carburetion.
a.Fouled and/or improper carburetor components.
Clean or replace according to specification (refer to TECHNICAL DATA 09).
6. Check compression ratio and squish area.
a.Compression ratio is too high.
Install genuine parts.