1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 70Get this manual
Trouble Check Chart (Cont TROUBLE 5POOR PERFORMANCE ON BOAT POSSI BLE CAUSE AMOTOR ADJUSTMENTS Incorrect Propel Ier Mounts looseloss of rubber bond Incorrect tri ongl Remote co ntrol incorrectl adjusted BVENTILATION Protruding hull attachments Keel too long Bent propeller (vibration) Transom too high CBOAT Improper load distribution Marine growth on bottom Added weight (water absorptionHook in bottom Catamaran (si ngl engi ne)venturi effect DCARBURETORSee Section High speed jets plugged Idle pick-up tube not touching front edge of high speed nozzle in venturi ACONTROL BO AND CABLE CONNECTIONSSee Section Control box andor POwerhead con nections
6SHIFT WILL NOT OPERATE
BGEARCASE See Section 6
Incorrect lubricant (OMC HI-VIS Gearcase Lube only) Faulty adj ustment Shift rod connector misadjusted Low oil leve Shifter dog or spring damaged ALTERNATOR WILL NOT OPERATE ('N eak or under charged battery) AALTERNATOR SYS TEMSee Section Faulty wiring Recti fier diodes damaged Shorted open stator windings Regu Iatar damaged ASTARTING CIRCUITSee Section Weak or shorted battery Loose or corroded battery connections Throttl advanced too far Gear shift not in neutral Defective neutral start sw itch Defective key switch Jammed starter drive Damaged starter drive parts Wrong rotation (Bosch) brushes in wrong Worn brushes (stuck brush) Broken brush spri ngs Open ircuit in solenoid Burned commutator Broken fie ld terminal Shorted or open windingsarmature or field 20 AMPFuse blown BEXCESSIVE STARTER CURRENT DRAWSee Section Worn or dry armature shaft bearings Excessive friction in engine Brushes not seat ng Di rty or corroded commutator Loose pol pi eces Bearing heads buckled