2
17
Clean Carburetor Sediment Bowl
WARNING
Wrap shop towel around sediment bowl to catch any
fuel leakage. Gasoline is extremely flammable and
highly explosive. Inadequate safety precautions can
result in death or serious injury. Always observe the
following precautions when working with fuel system
components:
•
Wear proper eye protection.
•
Be sure there is no open flame or potential
ignition sources in the area.
•
Keep a dry chemical fire extinguisher on hand in
case of emergencies.
•
Thoroughly wipe up any spilt fuel immediately.
•
Collect any fuel and/or shop towels in approved
containers and dispose of properly.
1. Start and run engine until fuel tank is empty.
2. See Figure 14. Position throttle lever/fuel valve to
OFF.
3. Remove spark plug wire from spark plug terminal.
Secure spark plug wire to prevent unintentional
contact with spark plug terminal.
4. Remove sediment bowl (
A
) from fuel shutoff valve.
Remove O-ring (
B
) and fuel filter screen (
C
).
5. Thoroughly clean sediment bowl of sediment, gum or
varnish deposits. Use Carburetor Cleaner (Part No.
100042), if necessary.
6. Check sediment bowl O-ring and fuel filter screen for
cuts, tears, or general deterioration. Clean or replace
as necessary.
14
7. Install fuel filter screen and O-ring into sediment bowl.
Install sediment bowl onto fuel shutoff valve. Tighten
sediment bowl to
20-25 lb-in
(2.3-2.8 N-m).
8. Install spark plug wire onto spark plug terminal.
Clean Air Cooling System
NOTE:
Avoid using high pressure compressed air, which
can force dirt and debris deeper into engine cavities and
crevices. Do not use a pressurized water spray as water
intrusion can contaminate both oil and fuel systems and
lead to corrosion.
1. Remove spark plug wire from spark plug terminal.
Secure spark plug wire to prevent unintentional
contact with spark plug terminal.
2. See Figure 15. Remove three hex flange screws to
release rewind starter (
A
) from blower housing.
NOTE:
Note orientation of the rewind starter before
removal.
3. Remove three hex flange screws to release cylinder
heat shield (
B
).
4. Clean cylinder cooling fins, the inside of the rewind
starter, and the flywheel fan as follows:
A. Remove all loose debris by hand.
B. Remove dust and dirt with a soft bristle brush and
a portable hand held vacuum.
C. Gently scrape away stubborn accumulations of
dirt and other deposits using a plastic putty knife
or stiff bristle brush.
D. Apply a light solvent to bristle brush to loosen and
remove grit and oily residue, if necessary.
5. Install two hex flange screws to fasten cylinder heat
shield to cylinder head. Tighten screws to
40-60 lb-in
(4.5-6.8 N-m).
NOTE:
Install the smaller screw (M6X8) on same side
as the engine oil drain plug.
6. Capturing blower housing, install hex flange screw to
fasten cylinder heat shield to engine base. Tighten
screw to
80-110 lb-in
(9-12.4 N-m).
7. Orient rewind starter as noted before removal.
NOTE:
Rewind starter may be installed in the 2
o'clock, 8 o'clock, 10 o'clock, or 12 o'clock positions.
8. Loosely install three hex flange screws to fasten
rewind starter to blower housing.
NOTE:
To ensure that pawls evenly engage flywheel
starter cup, pull starter rope, tighten hex flange
screws until snug, and then release starter rope.
9. Alternately tighten three hex flange screws to
25-35
lb-in
(2.8-4 N-m).
Not for
Reproduction
Summary of Contents for Vanguard 10V300
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