Troubleshooting - Carburetor - Suzuki DR350 Service Manual

SERVICING INFORMATION ) ·4
CARBURETOR
Complaint Sympto m and pos sible c aus".
Rem edy
Trouble w ith l. Starter jet is c logged.
Clean.
s la n ing .
2.
StarUtI pipe is clogged .
Cleen.
3.
Air leaking from a joint between starter body and
Check starter body and
carbunnor .
carburetor for t ighten8SS,
adjust and replace gasket .
4.
Starter plunger is not operating properly . Check and adjust.
Idlin g o r lo w -s peed l. Pilot jet . pilot air jet are clogged or loose. Check snd clean.
trouble .
2.
Improperly set pilot air screw. Adjust.
3.
Pilot outlet or by-pass Is clogged.
Check and clean.
4.
Staner plunger is not fully closed. Check and adjust.
5.
Incorrect float height .
Adju st .
M edium- or hig h- l. Main jet or main aIr jet Is clogged .
Check and clean.
s peed trouble . 2.
Needle Jet is clogged . Check and clean.
3.
Throttlo valve is not operating properly. Check throttle valve
fOf
operation.
4.
Filter is clogged. Check and clean.
5.
Incoreet float height Adjust .
Overflo w lind fu el 1. Needle valve is worn or damaged . Replace .
level fluc tuat ions.
2.
Spring in needle valve Is broken .
Replace.
3.
Floa l Is not working properly. Cheek and adjust .
4.
Foreign matter has adhered to needle valve. Clean.
5.
Fuel level is too high or low . Adjust float height .
6.
Clogged carburator air vent hose. Clean.