Fuel System - Stihl 064 Service Manual

STIHL 064, 066
1.2

Fuel System

Carburetor:
Basic setting
High speed screw H:
Low speed screw L:
Carburetor leakage test
at gauge pressure:
Fuel tank capacity:
Fuel mixture:
Mix ratio:
Compensator:
Air filter:
064
All position diaphragm
carburetor with integral
fuel pump
Back off approx. 1 turn
Back off approx. 1 turn
(starting with screws
tight against their
seats)
0.4 bar (5.8 psi)
0.84 I (1.77 US pt)
Regular brand-name gasoline and brand-name two-stroke
engine oil
50:1
with STIHL two-stroke engine oil
25:1
with other brand-name two-stroke,
air-cooled engine oils
Standard (wire mesh)
element
Special accessory:
Heavy duty (HD)-air filter
066
All position diaphragm
carburetor with integral
fuel pump
Back off approx. 1 turn
Back off approx. 1 turn
(starting with screws
tight against their
seats)
0.4 bar (5.8 psi)
0.84 I (1.77 US pt)
50:1
with STIHL two-stroke engine oil
25:1
with other brand-name two-stroke,
air-cooled engine oils
Keeps pressures equal at clean
air side of filter and metering
diaphragm irrespective of how dirty
the filter is
Standard (wire mesh)
element
Special accessory:
Heavy duty (HD)-air filter
4