1982-1983 Official Honda ATC 200E Big Red Shop Manual, Page 195Get this manual
ATC200E
POOR PERFORMANCE AT HIGH SPEEDS
Probable Ca use1Check ignition timing and valve clearance CORRECT Disconnect fuel tube at car bur etor FUE FLOWS FREE INCORRECT(1) (2) (3) (4) Improper valve clearance Faulty CO unitFaulty pulse generatorFau lty advancer FUE FLOW RESTRICTED(1) La ck of fuel in tank (2) Clogged fuel line(3) Clogged fuel tank breath er tube (4) Clogg ed fuel valve CLOGGEDClean
3 Remo ve ca rbur etor and check for clogged jet NO CL OG GED Check valve iming
INCORRECT-Cam sprocket not installed properly
5 Check valve sp ring tension NOT EAK EN ED
WEAK Faulty spring