Fuel System Troubleshooting; Poor Engine Start; Engine Idles Unsteadly, Stalls ​Or Runs Poorly; Lean Mixture/Rich Mixture - SMC Networks ATV50 Service Manual

4-0 03. Troub ble Shoo
Po or engin ne start

No fuel in n fuel tank

Clogged f fuel tube

Too much h fuel in cy

No spark from spar

Clogged air cleaner
En gine idle es unstea

Improper r adjustmen

Ignition m malfunction

Fuel/air m mixture rati

Air cleane er dirty

Insulation n leakage

Fuel tank k cap breat
Lea an Mixtu ure

Fuel jet o of carbureto

Fuel tank k cap breat

Fuel flow s in the tub

Float leve el in carbur

Vacuum piston stick
Ric ch Mixtur re

Float nee edle valve i

Float leve el too high

Air duct in n carbureto

Air cleane er element
Inte ermitten tly misfi

Malfuncti on of igniti
ting
ylinder
rk plug(mal lfunction of
r
ady, stal l or runs
nt to the idle speed
n
io not good d
thing hole c clogged
or clogged
thing hole c clogged
be unsmoo oth.
retor too lo ow.
k and close ed
in carburet tor faulty
or is clogg ed
t dirty
re as acc celeratio
ion system m
SM MC ATV 5 5/100 Se
f ignition s system )
s poorly
d screw
on
ervice M Manual
Chapte e r 4 Fuel S System
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