Bombardier SeaDoo 1997 factory shop manual, Page 24Get this manual
Section 02 TROUBLESHOOTING Sub-Section 01 (TROUBLESHOOTING CHART)
ENGINE MISFIRES, RUNS IRREGULARLY
OTHER OBSERVATION
Weak spark
POSSIBLE CAUSE
Fouled, defective, worn spark plugs Faulty rev limiter or ignition module Sheared flywheel key
Checkverify heat rangegapreplace Check, refer to section 07-02 Check timing mark, refer to section 07-02 Checkrefill Checksiphon and refill Checkcleanreplace Checkcleanadjust, refer to section 05-04 Pressure check engine, refer to 03-02 Checkreplace Tighten carburetor(s) Checkadjust choke cable Checkcleanreplace Checkcleanadjust, refer to section 05-04 Check, refer to section 05-04 Checkreplace, refer to section 03-07 Checkadjust, refer to section 06-03 Check, refer to section 05-04 Check, refer to section 03-07 Checkadjust, refer to section 03-07 Check, refer to section 03-07
Lean fuel mixture Dry spark plug (except when water fouled)
Low fuel level Stale or water fouled fuel Fuel filter dirty or restricted Carburetion dirty or out of adjustment Leaking crankshaft seal(s), intake or rotary valve cover O-ring Restricted fuel valve Loose carburetor