70 MS 192 T
: Pull the hose off the connector
(arrow) on the oil pump.
217RA192 TG
: Remove the screw (arrow).
217RA075 TG
: Remove the oil pump (1), pulling
the connector (2) out of the
recess in the engine housing.
217RA078 TG
21
: Check the oil pump (1) and
connector (2) and replace if
necessary.
217RA341 TG
: Slip the oil pump (1) over the
crankshaft stub and press the
nipple on the connector as far as
possible into the recess (arrow).
– Reassemble remaining parts in
reverse order.
217RA079 TG
1
– Grease the worm before
installing it, b 16
– Tightening torques, b 3.5
Cleaning the valve
A valve is installed in the tank wall to
keep internal tank pressure equal to
atmospheric pressure.
– Remove the sprocket cover and
bar and chain, b 5.1
– Remove the oil tank cap.
– Drain the oil tank.
Collect chain oil in a clean container
or dispose of it properly at an
approved disposal site.
: Blow the valve (arrow) clear with
compressed air (from outside to
inside of tank).
– Flush out the oil tank.
– Reassemble parts in reverse
order.
217RA345 TG
The valve must be replaced if it still
does not function properly after
being cleaned.
Replacing the valve
– Remove the sprocket cover and
bar and chain, b 5.1
– Remove the oil tank cap.
– Drain the oil tank.
Collect chain oil in a clean container
or dispose of it properly at an
approved disposal site.
13.4 Valve
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