Decompression Valve - Stihl MS 440 Service Manual

1
: Push the assembly sleeve
1118 893 2401 (1) over the
crankshaft stub on the clutch
side.
– Slip the oil seal over the
assembly sleeve with the open
side facing towards the
crankcase.
: Press the oil seal home with
press sleeve (1) 1118 893 4602.
– Remove the assembly sleeve.
– Turn the crankshaft several times
after approx. 1 minute.
MS 440, MS 440 C
– Clean both halves of the
crankcase.
: Affix the reflector foil without
creasing so that the foil is raised
on the clutch side (arrow).
The following operations are
required additionally when
replacing the crankcase.
– Install the chain brake – b 5.4.3
1
– Screw in the bar mounting
studs – b 5.6
– Install the chain tensioner –
b 5.5
Reassemble all other parts in the
reverse sequence.
6.8

Decompression Valve

1 2
– Remove the shroud – b 6.4
: Unscrew the decompression
valve (1).
: Install in the reverse
sequence (2).
Install in the reverse sequence.
– Fit the decompression valve and
tighten it down firmly – b 3.5
– Insert the cover (1).
– Fit the shroud – b 6.4
43