1988 Johnson/Evinrude "CC" 40 thru 55 Models Service Manual, Page 70Get this manual
Trouble Check Chart (Cont TROUBLE POSSIBLE CAUSE AMOTOR ADJUSTMENTS Incorrect Prope II er Mounts looseloss of rubber bond Incorrect trim angle Remote controls incorrectly adjusted BVENTILATION Protrudi ng 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 Catamaran {single engine}venturi effect DCARBURETORSee Section High speed jets plugged Idle pick-up tube not touching front edge of high speed nozzle in venturi ACONTROL BOX AND CABLE CONNECTIONSSee Section Control box andor POwerhead connections BGEARCASESee Section Incorrect lubricant {OMC HI-VIS Gearcase Lube only} Faulty adjustment Shift rod connector misadjusted Low oi level Shi fter dog or spri ng damaged AALTERNATOR SYSTEMSee Section Faulty wiring Recti fier diodes damaged Shorted or open stator windings Regu Iator damaged ASTARTING CIRCUITSee Section Weak or shorted battery Loose or corroded battery connections Throttle advanced too far Gear sh ft not in neutral Defective neutral start switch Defective key switch Jammed starter drive Damaged starter dri ve parts Wrong rotation {Bosch} brushes in wrong Worn brushes {stuck brush} Broken brush spri ngs Open circuit in solenoid Burned commutator Broken field terminal Shorted or open windingsarmature or field 20 AMP Fuse blown BEXCESSIVE STARTER CURRENT DRAWSee Section Worn or dry armature shaft bearings Excessive friction in engine Brushes not seat ing Dirty or corroded commutator Loose pole pieces Bearing heads buckl ed