Installing - Stihl MS 650 Manual

Clean all disassembled parts in
standard solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons.
– Inspect parts and replace if
damaged.
– Clean the entire housing recess
for the chain brake.
If the groove in the brake spring
anchor pin is worn, follow the steps
below to install a new pin:
– Remove the cylinder – b 6.5.1
: Use a suitable punch to drive the
anchor pin (1) out of the
crankcase, from the inside
outwards.
24
Do not drive out the pin in the other
direction as this would damage the
annular bead which was formed in
the crankcase bore when the pin
was originally installed. In such a
case neither the new anchor pin nor
the brake spring would locate
properly. Furthermore, the
crankcase could be damaged in this
way and possibly impair correct
operation of the chain brake.
5.5.3

Installing

– If the brake spring anchor pin has
been removed, coat the knurled
shank of the new pin with Loctite
before installing – b 17.
: Position the new pin in the bore
so that the knurling on the pin
meshes with the existing knurling
in the bore. Turn pin back and
forth as necessary.
MS 650, MS 660