1989 Johnson Evinrude "CE" Colt/Junior thru 8 Service Manual, P/N 507753, Page 53Get this manual
Trouble Check Chart TROUBLE 1MOTOR WILL NOT START POSSIBLE CAUSE AFUEL SYSTEMSee Section Fue ine improperly connected Air bleed or rifice blocked (or plug screw loose) Eng ine not primed Speed control not advanced (throttle closed) (warm up lev er not in start position) Engine flooded Old fuel Clogged fuel filter sc reens Primer not operating Pr ime hose improperl connected Prime hose nipples plugged Fuel system faul ty Prim er solenoid manual prime va lve in manual position Fue leaking thru primer so lenoid Primer injection port nipples plugged or pinched Pr ime so leno id filter plugged IGNITION SYS TEMSee Section Timing, or inkage improperly adjusted Sheared fl ywheel key Loose iring Ignition system faulty (switch) Gear shift not in neutral Defective neutral start switch Stop switchwiring, or bad ignition module APOW ERHEADSee Section Carburetors and timer base not synchron ized Stuck ignition plate Air leak at manifold gasketswarped manifold (backfires) Broken leaf va lves (backfires) Excessive carbon .on pi stons and cy inder head Stuck piston rings, or scored cyl inder or piston BCARBURETORSee Section Old fueltoo much lubri ca nt (d irt in carburetorSpark advance sto screw loose Primer sys tem not operating properl Float val ves and sea ts worn or stuck ncorre ct ca rburetor float setting Incorrec or ifi ce plugs Altitude or tem perature horsepower loss CFUEL PUMP AND TANKSee Sec tion Faulty fuel hose (c lamps or seals) (kinked) Fuel tank or pump fi Iters pi ugged Fue filter restricted Fuel and ve nt valves not opening Va lves not operating Fuel hose passages restric ted Diaphragm leakin or da maged Anti siphon va lves built in tanks incorrect or fault DEXHAUST GAS ENTERI NG ARB URETORSee Section Exha ust cover sc rews leaki ng Damaged exhaust housing seals Adapter gaskets leaking Cracked exhaust housing Exhaust adapter to cy nder sc rews loose or missi n.9