Rewind Starter; General; Rewind Spring; Replacing - Stihl FS 120 Service Manual

6.

REWIND STARTER

6.1

General

If the action of the starter rope
becomes very stiff and the rope
rewinds very slowly or not com-
pletely, it can be assumed that
the starter mechanism is in order
but plugged with dirt. At very low
outside temperatures the lubri-
cating oil on the rewind spring may
thicken and cause the spring
windings to stick together. This
has a detrimental effect on the
function of the starter mechanism.
In such a case it is sufficient to
apply a few drops of paraffin
(kerosine) to the rewind spring.
Then carefully pull out the starter
rope several times and allow it to
rewind until its normal smooth
action is restored.
If clogged with dirt or pitch, the
entire starter mechanism, includ-
ing the rewind spring, must be re-
moved and disassembled. Take
special care when removing the
spring.
Wash all parts in paraffin or white
spirit.
Lubricate the rewind spring and
starter post with STIHL special
lubricant, see 13.2, before
installing.

6.2

Rewind Spring

6.2.1

Replacing

Troubleshooting chart - see
"Standard Repairs, Trouble-
shooting" handbook.
•
Take out the screws.
•
Remove fan housing with rewind
starter.
 Remove the rope rotor - see
"Standard Repairs, Trouble-
shooting" handbook.
•
Take out the screw and remove
any remaining pieces of spring
from the fan housing.
Note: The replacement spring
comes ready for installation and is
secured with a washer.
 It should be lubricated with a few
drops of STIHL special lubricant
before installation - see 13.2.
•
The washer slips off the rewind
spring as it is pushed into the fan
housing. Engage the outer
spring loop in the recess in the
fan housing at the same time.
Caution: The rewind spring may
pop out and uncoil during
installation.
 If the rewind spring has popped
out, refit it as follows:
)6       )5