Oil Pump; 11.3.1 Removing And Installing - Stihl MS 650 Manual

: Use a 6 mm drift to carefully
press home the new valve from
outside until it is about 0.8 –
1.2 mm below the housing face
('a' in illustration).
Reassemble all other parts in the
reverse sequence.
70
11.3

Oil Pump

11.3.1 Removing and Installing

a
– Remove the clutch – b 5.4
: Pull the worm with drive spring
(arrow) out of the oil pump and off
the crankshaft stub.
: Take the drive spring off the
worm.
1
: Take out the screws (1).
– Pull off the oil pump.
: Replace the sealing ring (1).
Always use a new sealing ring.
– Lubricate the worm with grease
before installing – b 17
– Coat oil pump screws with
Hylomar sealant – b 17
Reassemble in the reverse
sequence.
1
1
MS 650, MS 660