Suzuki FU150SC Manual page 48

4-3 FUEL AND LUBRICATION SYSTEM
INSPECTION AND CLEANING
FUEL FILTER
If the fuel filter is dirty with sediment or rust, fuel will
not flow smoothly and loss in engine power may result. Clean
the fuel filter with a compressed air.
FUEL VALVE
Connect the vacuum pump gauge to the vacuum port of the
fuel valve as shown in the illustration. Apply negative pressure
to the fuel valve and blow the fuel outlet port. If air does not
flow out, replace the fuel valve with a new one.
Specified vacuum: 95 mm Hg
09917-47910; Vacuum pump gauge
AXCAUTION
Use a hand operated vacuum pump. Do not apply high
negative pressure to prevent the fuel valve damage.
FUEL VALVE GAUGE REMOVAL
e Open the seat.
e Disconnect the fuel level gauge lead wire coupler @) :
# Remove the fuel level gauge @ by removing the mounting
screws.
For inspecting the fuei level gauge, refer to page 6-21.
REMOUNTING
e Remount the fuel tank, fuel valve and fuel level gauge in the
reverse order of removal.
CARBURETOR
SPECIFICATION
Carburretor type BS26-187
Bore size 26 mm
1.D~No 25GO
Idle r/min. 1,400 4100 r/min,
Float height 10.50 £0.10 mm
Main jet : (M.J.) # 112.5
Jet Needle (JN) 4DG8
Needle jet : (NJ) 0-9 (461)
Throttle valve Th.) 120
Pilot jet (P.J.). # 12.5
Pilot screw (P.S) ri
# 25 Starter jet (GS)
Throttle cable play
2-4 mm
|
COMO
Gq) Jet needle
Piston valve .
(3) Diaphragm
Needle jet
() Main jet
Needle vaive
@ Pilot screw
Plunger