Chrysler 75 and 85 HP Outboards Service Manual OB 3646, Page 20Get this manual
TROUBLESHOOTING GUIDE
MOTOR WILL NOT START
Fuel System No fuel in tank Clogged screen in tank Restricted vent in tank
Ignition System
Defective spark plug
Loose connections Cam or linkage improperly adjusted Sheared flywheel key Faulty ignition components
Defective fuel pump
Clogged filter in pump Damaged diaphragm Water in gasoline Restricted carburetor jets Float out of adjustment
LOSS OF POWER (Ignition OK)
Power Head Carb and throttle cam not synchronized Air leak at cylinder head gasket Warped cylinder head Excessive carbon build up Stuck or damaged piston ring Scored cylinder or piston
Carburetor Improper fuel mixture Improper carburetor adjustment Choke not adjusted properly Air leak at carburetor gasket Inlet needle and seat worn or stuck ncorrect float setti ng Broken reed valves (backfires) Altitude horsepower loss (See Table 6)