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Checking Saw Chain Tension
1. Before using, check the Saw Chain tension.
2. While wearing heavy-duty gloves, use your index
finger and thumb to carefully grab the Saw Chain
in the middle section under the Chain Guide Bar.
3. Pull the Saw Chain away from the Guide Bar.
4. The Saw Chain should snap back against
the Guide Bar. The Chain should fit snugly
in the groove of the Chain Guide Bar, yet you
should still be able to slide the chain along the
Chain Guide Bar by hand.
5. There should be no sagging between the Guide
Bar and Saw Chain on the underside of the Guide Bar.
Figure C: Checking Saw Chain Tension
Adjusting Saw Chain Tension
1. Loosen the Lock Knob on the Drive Cover
several turns.
2. Turn the Chain Tension Knob clockwise to
increase chain tension and counterclockwise
to decrease tension.
3. Tighten the Lock Knob on the Drive Cover.
4. Check the Saw Chain tension again following
steps 2 through 5 under Checking Saw Chain
Tension above. If needed, repeat the adjusting
steps to achieve the correct tension.
Figure D: Adjusting Saw Chain Tension
Replacing the Saw Chain
1. Soak the new Saw Chain overnight in
Bar and Chain Oil (Buy it locally).
2. Loosen the Lock Knob on the Drive Cover,
then turn the Chain Tension Knob
counterclockwise until the Saw Chain is loose.
3. Unthread the Lock Knob and remove the Drive
Cover.
4. Push the Chain Guide Bar towards the
Sprocket to further loosen the Saw Chain.
5. Remove the Saw Chain from the Sprocket,
then the Guide Bar.
NOTE: Check the condition of the Sprocket when
replacing the Chain. The Sprocket should be
replaced if it shows signs of wear or is
damaged. If needed, have the Sprocket
replaced and the bearings greased by a
qualified technician.
NOTE: Check the condition of the Chain Guide Bar
when replacing the Chain. Refer to Chain Guide
Bar Care on page 19.
6. Flip the Chain Guide Bar over before mounting
the new Saw Chain. This will ensure that the
Chain Guide Bar wears evenly over time.
7. Place the new Saw Chain around the Sprocket
and over the Guide Bar. Make sure the Cutters
of the Saw Chain are facing away from the
Chainsaw along the top edge of the Guide Bar.
Fit the Chain links into the groove around the
Guide Bar.
8.
Replace the Drive Cover and tighten the Lock
Knob so that the Cover is snug, but not tight.
Tension the Saw Chain following the steps in
Adjusting Saw Chain Tension above.
Lock Knob
Chain Tension Knob
Drive Cover
Page 12
U1CS21113
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