Fuel - Stihl FS 510 C Instruction Manual

Check direction of rotation of cutting
attachment
Cutting edges of circular saw blades
must point clockwise.
4
3
2
b
a
Place the cutting attachment (1) in
N
position.
WARNING
Collar (a) must locate in the cutting
attachment's mounting hole (b).
FS 510 C, FS 560 C
Securing the cutting attachment
Fit the 60 mm (2.4 in) diameter
N
thrust washer (2) – convex side
must face up.
Fit the 63 mm (2.5 in) diameter rider
N
plate (3).
Block the shaft.
N
Screw on the nut (4)
N
counterclockwise and tighten it
down firmly.
WARNING
If the mounting nut has become too
loose, fit a new one.
NOTICE
Remove the tool used to block the shaft.
1
Removing the Cutting Attachment
Block the shaft.
N
Unscrew the mounting nut
N
clockwise.
Pull the cutting attachment with its
N
mounting hardware off the gearbox.

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 (R+M)/2.
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!
Fuels with different percentages of
ethanol are being offered. Ethanol can
affect the running behaviour of the
engine and increase the risk of lean
seizure.
English
27