2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 526Get this manual
TROUBLESHOOTING
POOR PERFORMANCE AT LOW AND IDLE SPEED
1Pilot Screw Inspec ti on
Che ck carb ure to pi lot sc rew ad jus tm ent
1 the adjustment correct? 5
NO YES- See page 5-20 GO STEP 2
2Inta ke Air Lea Ins pection
Chec for leaking ca rbu reto in sulator
Is there leaking?
YESLo ose car buret ns lator ba nds Dam ag ed in su lator
GO TO STEP 3
3Sp ark Test
Perf rm sp ark est
Is there eak or interm ittent spark?