10
MS 171, MS 181, MS 211
4.3
Chain Lubrication
In the event of trouble with the
chain lubrication system, check and
rectify other sources of faults
before disassembling the oil pump.
.
Condition
Cause
Remedy
Chain receives no oil
Oil tank empty
Fill up with oil, check oil pump
Oil inlet hole in guide bar is
blocked
Clean oil inlet hole
Intake hose or pickup body clogged
or intake hose ruptured
Fit new intake hose and pickup
body
Valve in oil tank blocked
Clean or replace valve
Teeth on worm worn
Install new worm
Oil pump damaged or worn
Install new oil pump
Oil intake hose not properly fitted or
damaged
Fit oil intake hose properly or install
new hose
Machine losing chain oil
Oil pump body (engine housing)
damaged
Check engine housing and oil
pump and replace if necessary
Oil pump damaged or worn
Install new oil pump
Oil intake hose connector damaged Install new oil intake hose
Oil intake hose not properly fitted or
damaged
Fit oil intake hose properly or install
new hose
Oil pump delivers insufficient oil
Oil pump worn
Install new oil pump
Oil intake hose not properly fitted or
damaged
Fit oil intake hose properly or install
new hose
Unsuitable chain lubricant has been
used
Drain unsuitable chain lubricant
from oil tank and fill up with
recommended chain lubricant
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