Rewind Starter; Chain Lubrication - Stihl 020 T Service Manual

2.4

Rewind Starter

Condition
Starter rope broken
Rewind spring broken
Starter rope can be pulled out
almost without resistance
(crankshaft does not turn)
Starter rope is difficult to pull
and rewinds very slowly
2.5

Chain Lubrication

Important: In the event of trouble with chain lubrication system, always investigate the other possible sources of faults
before disassembling the oil pump.
Condition
Chain receives no oil
STIHL 020 T
Cause
Rope pulled out too vigorously
as far as stop or over edge –
i.e. not vertically
Normal wear
Spring overtensioned –
no reserve when rope is
fully extended
Very dirty or corroded
Guide peg on pawl or pawl
itself is worn
Spring clip fatigued
Starter mechanism is very
dirty (dusty conditions)
Lubricating oil on rewind
spring becomes viscous
at very low outside tem-
peratures (spring windings
stick together)
Cause
Oil tank empty
Oil inlet hole in guide bar is
blocked
Intake hose or pickup body
(strainer) clogged or intake
hose ruptured
Valve in oil tank blocked
Teeth on pump piston and/or
worm worn
Remedy
Fit new starter rope
Fit new starter rope
Fit new rewind spring
Fit new rewind spring
Fit new pawl
Fit new spring clip
Thoroughly clean complete
starter mechanism
Apply a few drops of kerosine
(paraffin) to spring, then pull rope
carefully several times until normal
action is restored
Remedy
Fill up with oil
Clean oil inlet hole
Wash intake hose and pickup body
(strainer) in white spirit and blow out
with compressed air; replace if
necessary
Clean or replace valve
Fit new pump piston and/or
new worm
9