1989 Johnson Evinrude "CE" Colt/Junior thru 8 Service Manual, P/N 507753, Page 55Get this manual
Trouble Check Chart (Cont TROUBLE POSSIBLE CAUSE MOTOR ADJUSTMENTS Incorrect Propeli er Mounts looseloss of rubber bond Incorrect tri angl Remote control incorrectl adj usted BVENTILATION Protruding hull attachments Keel too long Bent propel er (vi bration) Transom too high CBOAT Imprope load distribution Marine growth on bottom Added weight (water absorption) Hook in bottom Catamaran (single engine)venturi effect DCARBURETORSee Section High speed jets pi ugged Idle pick-up tube not touching front edge of high speed nozzle In ve nturi