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107990
ELECTRIC CHAIN SAW
®
For more information, visit www.desatech.com
Mounting
Stand-Outs
Guide Bar
Bolts
Guide Bar
Nuts
Adjusting
Hole
Guide
Bar
Tapping
Screw
Saw
Chain
Cutting
Edge
Cutting
Edge
Towards
Guide
Bar Nose
Front Hand
Guard
Drive
Sprocket
Figure 3 - Assembling Guide Bar, Chain, and Hand Guard
Adjusting
Plate
Adjusting
Screw
Sprocket
Support
Figure 4 - Part Locations For Assembling Guide Bar
Adjusting
Block
ASSEMBLY
The plastic hardware bag should include:
• two guide bar bolts
• two guide bar nuts
• one Phillips-head tapping screw
• automatic chain sharpener (Fast Sharp
models only)
1. Lay chain out flat.
2. Install front hand guard onto saw body.
Do this by pressing two mounting stand-
outs on hand guard into hex-shaped
holes in saw body (see Figure 3).
3 Insert tapping screw through hand
guard and into saw handle. Tighten
screw firmly.
4. Turn adjusting screw counterclockwise
(see Figure 4). Continue to turn adjust-
ing screw until adjusting block is to rear
of adjusting plate.
5. Install guide bar onto saw body. Place
rear of guide bar between adjusting
plate and sprocket support.
IMPORTANT:
Make sure to insert ad-
justing block into oval adjusting hole
on guide bar.
6. Line up holes on sprocket support with
center slot on guide bar and holes in
saw body.
7. Insert guide bar bolts through front
hand guard, saw body, center slot of
guide bar, and sprocket support. Attach
guide bar nuts to guide bar bolts.
IMPORTANT:
Tighten guide bar nuts
finger tight only. Make sure adjust-
ing block is in oval adjusting hole on
guide bar.
8. Place chain around drive sprocket, then
along top groove of guide bar and
around guide bar nose.
Note:
Make
sure cutting edges of chain are facing
the right direction. Position chain so
cutting edges on top of guide bar face
guide bar nose (see Figure 3).
Note:
Some models are pre assembled. As-
sembly is not needed on these models.
See Saw Chain Tension Adjustment, page 7.
WARNING: Cutting edges on
chain are sharp. Use protective
gloves when handling chain.
IMPORTANT: Do not clamp chain
saw in vise during assembly.
CAUTION: Do not place chain
on saw backwards. If chain is
backwards, saw will vibrate badly
and will not cut.
9. Adjust saw chain tension. Follow steps
under Saw Chain Tension Adjustment,
page 7.