Stihl FS 80 Service Manual

55FC 75, FC 85, FH 75, FS 75, FS 80, FS 85, HL 75, KM 85, KW 85
: Connect suction hose (2) of
vacuum pump 0000 850 3501 to
the fuel hose (1).
: Close the vent screw (3) on the
pump.
: Operate the lever (4) until the
VA
936RA396
2
1
5
4
3
pressure gauge (5) shows a
vacuum of 0.4 bar.
This vacuum must gradually
disappear. If it remains constant, the
tank vent is faulty and must be
replaced.
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. The fine pores of
the pickup body eventually become
clogged with minute particles of dirt.
This restricts the passage of fuel
and results in fuel starvation.
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.
– Drain the fuel tank.
– Remove the rewind starter,
b 6.2
– Pull the fuel hoses off the elbow
connectors on the carburetor,
b 9.2.2
Dispose of fuel and lubricants
properly at approved disposal site.
Cleaning the fuel tank
: Unscrew the filler cap (1) and
drain the tank.
– Pour a small amount of clean
gasoline into the tank and shake
the unit vigorously.
VA
936RA178
– Open the tank again and drain it.
Dispose of fuel and lubricants
properly at approved disposal site.
9.6 Pickup Body 9.7 Fuel Tank/
Fuel Hoses

Stihl FS 80 Specifications

General

Brand	Stihl
Model	FS 80
Category	Trimmer
Language	English