1986-1987 Honda Fortrax TRX70 Service Manual, Page 146Get this manual
16TROUBLESHOOTING ENGINE DOES NOT START OR IS HARD TO START ENGINE LACKS POWER POOR PERFORMANCE AT LOW AND IDLE SPEEOS POOR PERFORMANCE AT HIGH SPEEDS 16-4 16-1 16-2 16-3 POOR HANDLING 16-4
ENGINE DOES NOT START OR IS HARD TO START
ProbabM Cau
, Check if fuel is getting carburet or
NO FUEL TO CARBURETOR
111 No fuel in fuel tank ,2) Clogged fuel line or fuel strainer '3) Clogged float valve
,4) Clogged fuel tank cap breather
GETTING TO CARBURETOR
2Try spark test GOOD SPARK
WEAK OR NO SPARK
(1) Faulty spark plug
'2) Loose spark plug cap or wiring ,3) Faulty ignition switch (After86) or engine stop switch if plug
sparks when blackwhite wire is disconnected Faulty exciter coil Faulty pulse generator Faulty ignition coil Faulty COl Pulse generator air gap
3Test cylinder compression