Black & Decker Chainsaw Black & Decker Chainsaw User Manual

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of 17
 
11
• Place the saw on a firm surface. Rotate the two allen head screws
(11) counterclockwise with the wrench (13) provided as shown in
figure D.
• To remove the saw chain (9), rotate the tension adjustment screw
(23) in the front of the housing using the flat screwdriver end of the
wrench (13) as shown in figure F. Turning the screw
counterclockwise allows the guide bar to recede and reduces the
tension on the chain so that it may be removed.
• Remove sprocket cover (10) and
allen head screws (11).
• Lift the worn saw chain (9) out of
the groove in the guide bar (8).
• Place new chain in groove of guide
bar making sure saw teeth are
facing correct direction by
matching arrow on chain with
graphic on housing shown in
figure G.
• Place the saw chain and guide bar assembly
around the sprocket (19). Check to make sure
that the slot (20) in the guide bar (8) is over the
two location pins (21) shown in figure E and
that the hole below the slot is located over the
adjustment pin (22).
• Replace sprocket cover (10) and thread allen
head screws (11) in with wrench until snug,
then back wrench off one full turn
.
• Pull bar nose up and keep it up as you adjust
tension Figure G1.
• Rotate the tension adjustment screw (23) in the front of the housing
clockwise to increase the chain tension as in Figure F.
• Follow instructions in “Adjusting Chain Tension” section.
• While still holding the bar nose up, securely tighten the rear allen
screw (11) first, then tighten the front allen screw.
• When the chain is new check the tension frequently (after
disconnecting battery) during the first 2 hours of use as a new chain
stretches slightly.
Adjusting Chain Tension
CAUTION: Sharp chain. Always wear protective gloves when
handling the chain. The chain is sharp and can cut you when it is
not running.
WARNING: Sharp moving chain. To prevent accidental
operation, insure that battery is disconnected from the tool
before performing the following operations. Failure to do this
could result in serious personal injury.
• With the saw still on a firm surface check the chain tension. The
tension is correct when the chain
snaps back after being pulled 1/8
inch (3mm) away from the guide
bar (8) with light force from the
middle finger and thumb as
shown in figure H. There should
be no “sag” between the guide
bar and the chain on the
underside as shown in figure I.
• To adjust saw chain tension,
loosen the allen head screws
(11).
• Rotate the tension adjustment
screw (23) in the front of the
housing using the flat
screwdriver end of the wrench
(13) as shown in figure F.
• Do not over-tension the chain as
this will lead to excessive wear
and will reduce the life of the bar and chain. Overtensioning also
reduces the amount of cuts you will get per battery charge.
• Once chain tension is correct, tighten allen head screws (11).
• When the chain is new check the tension frequently (after
disconnecting battery) during the first 2 hours of use as a new chain
stretches slightly.
G
H
I
1/8 in.
(3mm)
G1

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