Stihl MS 251 Instruction Manual - Page 74

Throttle Trigger/Lockout Lever - QuickStop Super, Remove the handle molding 1.

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- Check operation 2 1 - Reassemble all other parts in the reverse sequence. 2 1 : Push leg (1) of torsion spring in direction of rear handle. : Push the lockout lever (2) into its mounts (arrow). 2310RA172 TG 10.3 Throttle Trigger/Lockout Lever - QuickStop Super Lubricate sliding and bearing points with grease after disassembly. 1 : Take the throttle rod (1) out of the guide (arrow) and disconnect it from the throttle trigger (2). 2 2310RA176 TG 5902RA307 TG 2310RA177 TG 1 : Attach the torsion spring (1) to the lockout lever (arrow). The lockout lever may pop out. 2310RA173 TG 1 : To remove the handle molding, press the tabs (1) on the underside apart and push them through the rear handle. 1 : Use a drift (2) to drive out the pin (1). 1 1 2 2310RA178 TG 2310RA175 TG 1 2 : Engage lugs (2) at front end of handle molding (1) in the recesses (arrow). - Push down the handle molding (1) until it snaps into position. 2310RA174 TG : Remove the handle molding (1). : Remove the throttle trigger (1) with torsion spring (2). - Check that roller on throttle trigger turns freely, replace trigger if necessary. - Check torsion spring and replace if necessary. MS 231, MS 231 C, MS 251, MS 251 C 73

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73
MS 231, MS 231 C, MS 251, MS 251 C
:
Push leg (1) of torsion spring in
direction of rear handle.
:
Push the lockout lever (2) into its
mounts (arrow).
:
Attach the torsion spring (1) to
the lockout lever (arrow).
The lockout lever may pop out.
:
Engage lugs (2) at front end of
handle molding (1)
in the recesses (arrow).
–
Push down the handle
molding (1) until it snaps into
position.
2
2310RA172 TG
1
2310RA173 TG
1
2310RA174 TG
1
2
–
Check operation
–
Reassemble all other parts in the
reverse sequence.
10.3
Throttle Trigger/Lockout
Lever – QuickStop Super
Lubricate sliding and bearing points
with grease after disassembly.
:
To remove the handle molding,
press the tabs (1) on the
underside apart and push them
through the rear handle.
:
Remove the handle molding (1).
5902RA307 TG
1
1
2310RA175 TG
1
:
Take the throttle rod (1) out of the
guide (arrow) and disconnect it
from the throttle trigger (2).
:
Use a drift (2) to drive out the
pin (1).
:
Remove the throttle trigger (1)
with torsion spring (2).
–
Check that roller on throttle
trigger turns freely, replace
trigger if necessary.
–
Check torsion spring and replace
if necessary.
2
2310RA176 TG
1
1
2310RA177 TG
2
1
2310RA178 TG
2