Stihl 064 - Page 88

STIHL 064, 066 88
11.9 Fuel Filter and
Fuel Hose
Top:
1 = Grub screw
2 = Vent hose
3 = Vent connector Top:
Assembly hook 5910 893 8800
Bottom:
Correctly positioned grub screws Bottom:
a = 12-15 mm (approx. 1/2") Fuel filler cap Withdrawing the pickup body
The diaphragm pump draws fuel out of the
tank and into the carburetor via the fuel
hose. Any impurities mixed with the fuel
are retained by the pickup body (filter). The
fine pores of the filter eventually become
clogged with minute particles of dirt. This
restricts the passage of fuel and results in
fuel starvation.
Important: In the event of trouble with the
fuel supply system, always check the fuel
tank and the pickup body first. Clean the
fuel tank if necessary.
To clean the fuel tank:
- Unscrew the filler cap and drain the tank.
- Pour a small amount of clean gasoline
into the tank.
- Close the tank and shake the saw
vigorously.
- Open the tank again and drain it.
To remove and install the
pickup body:
- Use the assembly hook to pull the
pickup body out through the filler
opening.
Note: Do not stretch the intake
hose too much while pulling out
the pickup body.
- Pull the pickup body off the fuel hose.
- Remove cap from pickup body and
take out the weight.
T k h fil f h i k b d
- Pull the vent hose off the vent
connector.
- Use a drift to push the grub
screws out of the hose.
- Wash all parts in fresh white spirit
and blow out with compressed air.
Install the tank vent by reversing the
disassembly sequence.
Note: Use a drift to position the grub
screws in the vent hose as shown in the
drawing.