Removing The Metal Cutting Attachment; 4-Mix Engine - Stihl FS 90 Manual De Instrucciones

English
Place the cutting attachment (6) on
N
the thrust plate (7).
Collar (see arrow) must engage
the mowing head's mounting hole.
Fit the thrust washer (8) and rider
N
plate (9) on the shaft (10).
Block the drive shaft.
N
Use the combination wrench (12) to
N
screw the mounting nut (11) on to
the output shaft counterclockwise
and tighten it down firmly.
If the mounting nut turns too
freely, fit a new one.
28
Removing the metal cutting
attachment
Block the drive shaft.
N
Unscrew the mounting nut
N
clockwise.
Take the parts off the shaft – do not
N
remove the thrust plate (7).

4-MIX Engine

The STIHL 4-MIX engine features
mixture lubrication and must be run on a
fuel mixture of gasoline and engine oil.
It operates otherwise on the 4-stroke
principle.
FS 90, FS 90 R