Fuel - Stihl FS 45 Instruction Manual

English
2
1
Adjusting Nylon Line
STIHK AutoCut
: old the rotating cutting head
horizontal to the ground – tap it on
the ground – about 1 1/4" (3 cm)
fresh line is advanced.
: The blade (1) on the deflector (2)
trims surplus line to the correct
length. Avoid tapping the head more
than once.
Line feed operates only if both lines
still have a minimum length of 1"
(2.5 cm).
20
Removing the Mowing Head
STIHL AutoCut
: Hold the mowing head steady
and unscrew the cap
counterclockwise.
STIHL PolyCut
: Block the shaft.
: Unscrew the mowing head
counterclockwise.
STIHL FixCut
: Block the shaft.
: Use the combination wrench to
loosen and unscrew the mounting
nut clockwise from the output shaft.
If the mounting nut is too loose, fit a
new one.
Replacing Nylon Line / Cutting
Blades
STIHL AutoCut
See chapter on "Replacing Nylon Line".
STIHL PolyCut, FixCut
Refer to instructions supplied with the
mowing head.

Fuel

This engine is certified to operate on
unleaded gasoline and with the mix ratio
50:1.
Your engine requires a mixture of high-
quality premium gasoline and high-
quality two-stroke air-cooled engine oil.
Use premium branded unleaded
gasoline with a minimum octane rating
of 89 RON.
Note: Models equipped with a catalytic
converter require unleaded gasoline. A
few tankfuls of leaded gasoline can
reduce the efficiency of the catalytic
converter by more than 50%.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
high-quality fuels!
FS 45, FS 46