Tensioning The Saw Chain (Side Chain Tensioner); Tensioning The Saw Chain (Quick Chain Tensioner); Checking Chain Tension - Stihl MS 251 Manual De Instrucciones

Tensioning the Saw Chain
(side chain tensioner)
1
Retensioning during cutting work:
Switch off the engine.
N
Loosen the nut.
N
Hold the bar nose up.
N
Use a screwdriver to turn the
N
tensioning screw (1) clockwise until
the chain fits snugly against the
underside of the bar.
While still holding the bar nose up,
N
tighten down the nut firmly.
Go to "Checking Chain Tension".
N
A new chain has to be retensioned more
often than one that has been in use for
some time.
Check chain tension frequently –
N
see chapter on "Operating
Instructions".
MS 251, MS 251 C
Tensioning the Saw Chain
(quick chain tensioner)
1
2
Retensioning during cutting work:
Shut off the engine.
N
Pull out the hinged clip and loosen
N
the wingnut.
Turn the adjusting wheel (1)
N
clockwise as far as stop.
Tighten down the wingnut (2) firmly N
by hand.
Fold down the hinged clip.
N
Go to "Checking Chain Tension"
N
A new chain has to be retensioned more
often than one that has been in use for
some time.
Check chain tension frequently –
N
see chapter on "Operating
Instructions".

Checking Chain Tension

Shut off the engine.
N
Wear work gloves to protect your
N
hands.
The chain must fit snugly against
N
the underside of the bar and it must
still be possible to pull the chain
along the bar by hand when the
chain brake is released.
If necessary, retension the chain.
N
A new chain has to be retensioned more
often than one that has been in use for
some time.
Check chain tension frequently –
N
see chapter on "Operating
Instructions".
English
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