Stihl TS 420 - 6.2 Studs for securing the cast arm with guard

31TS 410, TS 420
: Examine the clutch – all springs
(arrows) must be hooked in
properly.
– Ring (1) must be in place.
: Fit the clutch (1) on the
crankshaft stub so that the raised
hexagon (arrow) can be seen.
– Block the piston, b 5.7.
370RA073 TG370RA074 TG
1
370RA075 TG
1
: Turn the clutch (1) with hexagon
(arrow) onto the crankshaft stub
and screw it tight – left-hand
thread.
– Tightening torques, b 3.5.
– Pull the locking strip out of the
cylinder.
– Reassemble remaining parts in
reverse order.
6.1 Belt pulley /clutch drum
– Remove the clutch, b 6.
: Remove the ring (arrow).
– Remove the clutch drum (1).
1
370RA002 TG370RA046 TG
1
– Examine the clutch drum (1) for
signs of wear.
The remaining thickness must be
measured if there are distinct signs
of wear on the inside diameter of the
clutch drum (1). The clutch drum
must be replaced if the remaining
thickness is less than approx. 80 %
of the original thickness.
: Remove the circlip (1).
: Drive out the ball bearing with the
drift pin (1) 4119 893 7200.
VA
148RA101
80%
100%
1
!
370RA076 TG
1
370RA077 TG
1