Chain Lubrication - Stihl MS 201 Manual

3.3

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
Chain receives no oil
Machine losing chain oil
Oil pump delivers insufficient oil
10
Cause
Oil inlet hole in guide bar is blocked Clean oil inlet hole
Intake hose or pickup body clogged
or intake hose ruptured
Connector blocked
Valve in oil tank blocked
Worm flanks or driver worn
Oil pump damaged or worn
Oil pump damaged or worn
Oil suction hose connection
damaged
Crankcase cracked
Oil pump damaged or worn
Worm driver is loose
.
Remedy
Fit new intake hose and pickup
body
Clean the connector or replace if
necessary.
Clean or replace valve
Install new worm
Install new oil pump
Install new oil pump
Install new oil suction hose
Install new crankcase
Install new oil pump
Install new worm
MS 201, MS 201 C, MS 201 T, MS 201 TC