Stihl BT 45 Manual page 9

4.2 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
8
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 very dirty
(dusty conditions)
Lubricating oil on rewind spring
becomes viscous at very low
outside temperatures (spring
windings stick together)
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
Coat rewind spring with a standard
solvent-based degreasant
(containing no chlorinated or
halogenated hydrocarbons). Then
pull rope carefully several times
until normal action is restored
BT 45