2001 Ski-Doo Mini Z Factory Shop Manual, Page 43Get this manual
Section 03 TROUBLESHOOTING Subsection 02 (ENGINE)
SYMPTOM CONDITION TestInspection
IRREGULAR ENGINE IDLENORMAL USE AFTER ENGINE WARM UP1Check chokeaChoke plate may be partially closedReadjust2Check pilot screw positionaInadequate fuelair mixtureAdjust according to specifications (refer to TECHNICAL DATA 10)3Check ignition system coil air gapaAir gap is too largeAdjust according to specifications (refer to TECHNICAL DATA 10)4Check dimension of main jetaInadequate fuelair mixtureAdjust according to specifications (refer to TECHNICAL DATA 10)5Check engine compressionaInsufficient engine compressionCheck valve clearance; carbon accumulation; defective cylinder head gasket, valves or valve seatsCheck for worn piston rings, piston or cylinderReplace defective part(s) (ex piston(s), ring(s), etc