Fuel System
4-22
2st X18E2 2012
GB
5) Disassembly and Inspection of Fuel
Pump
1. Remove float chamber of #3 carburetor to disassemble Fuel
Pump.
To prevent fuel from dripping on the floor,
use a vessel to catch the fuel.
4) Inspection of Fuel Pump and
Needle Valve
1. Connect vinyl hose 1 to inlet of fuel pump.
Place carburetor body upside down to shut off needle valve.
2. Apply pressure, and check if the pressure is maintained for
10 seconds. Disassemble and inspection if necessary.
1
It can instantly check to apply pressure by your
breath, when without pressure gauge.
Vacuum Pressure Gauge
P/N. 3AC-99020-1
2. Check diaphragm 1 for break, crack and damage, and
replace if necessary.
3. Check check valve 2 for damage and deterioration, and
replace if necessary.
4. Check fuel pump body 3 for crack and damage, and
replace if necessary.
5. Clean fuel pump body.
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