1965 Evinrude 90 HP StarFlite Service Manual, PN 4206, Page 12Get this manual
TROUBLE CHECK CHART (CONT) TROUBLE POSSIBLE CAUSE ASPARK PLUGSSee Section Crossed or reversed leads Cover or inner terminal damaged (spark plug point out of H.Tlead) Faulty leads Looselow torque Incorrect heat range Defective (cracked insulator) BDISTRIBUTORSee Section Incorrectly adjusted pOints (vibration) Incorrect timing Loose wiring Coil or condenser damaged (loose) Fibre breaker block worn Points dirty or pitted Defective breaker cam CORRODED OR CRACKED DISTRIBUTOR CAPROTORSee Section Incorrect rotor Loose distributor ground cable Rotor brush stuck or worn Carbon path in distributor cap Worn shaft bearings AINCORRECT PROPELLER Incorrect tilt angle (smoking) Poor fuel mixtoo much oil (smoking) Remote controls incorrectly adjusted Propeller hub slipping Bent or worn propeller Exhaust outlet damaged or missing Bent ge housing or exhaust housing (broken driveshafts) Altitude horsepower loss Catamaran (single engine)venturi effect Exhaust leaks Overheating BCA VIT ATION Protruding hull attachments Keel too long Bent propeller (vibration) Transom too high CBOAT Improper load distribution Marine growth on bottom Added weight (water absorption) Hook in bottom ACONTROL BOX AND ELECTRICAL CONNECTIONS See Section Control box and or power head connections not coupled or corroded Ammeter to key switch fuse blown Faulty push-button switch Open circuit (broken wires) Faulty key switch BLOWER UNITSee Section Incorrect lubricant (Type "C" only) Loose clutch spring screws Damaged coil, worn clutch spring, or hub Burned shift cable Loose knife disconnect terminals ACHARGING CIRCUITSee Section Blown fuse Shorted or open windingsrotor or field Regulator damaged Diodes damaged Ammeter to key switch fuse blown