Black & Decker CCS818 Instruction Manual page 10

• Follow instructions in "Adjusting Chain Tension" section.
• While still holding the bar nose up, tighten the rear allen screw first,
then tighten the front allen screw. Make sure both allen screws are
securely tightened. Do not overtighten.
• 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.
Replacing the Saw Chain
z_CAUTIOR: Sharp chain. Always wear protective gloves when
handling the chain. The chain is sharp and can cut you when it is
not running.
z_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.
• Place the saw on a firm surface. Rotate the two allen head screws
(9) counterclockwise with the wrench (11) provided as shown in
figure D.
• To remove the saw chain (7), rotate the tension adjustment screw
(22) in the front of the housing using the flat screwdriver end of the
wrench (11) 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 (8) and
allen head screws (9).
Lift the worn saw chain (7) out of
the groove in the guide bar (6).
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
(18). Check to make sure that the slot (19) in the guide bar (6) is
over the two location pins (20) shown in figure E and that the hole
below the slot is located over the adjustment pin (21).
Replace sprocket cover (8) and thread allen head screws (9) in with
wrench untilsnug, then back wrench off one full turn.
• Pull bar nose up and keep it up as you adjust tension.
• Rotate the tension adjustment screw (22) 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 (9) 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.
AdjustingChain Tension
z_CAUTION: Sharp chain. Always wear protective gloves when
handling the chain. The chain is sharp and can cut you when it is
not running.
ZLWARNING: 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 (6) 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 (9).
o v'
/8 in.
(3mm)
"_ _ 0 _ s o O_ _ O-
X
10