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107705
www.desatech.com
ENGLISH
ASSEMBLY
Note: Some models are pre-assembled. Assembly is
not needed on these models.
See
Saw Chain Tension Adjustment, pages 8 and 9.
1. Lay chain out flat.
2. Loosen and remove guide bar nuts and sprocket
cover.
3. Loosen and remove drive sprocket screw or re
-
move E-ring from shaft (see Figure 4). Remove
sprocket support.
WARNING: Cutting edges on chain
are sharp. Use protective gloves when
handling chain.
IMPORTANT: Do not clamp chain saw in
vise during assembly.
Continued
Switch Linkage This device connects switch to trig-
ger. It moves switch when you squeeze trigger.
Switch Lockout Device that reduces accidental
starting of saw.
Trigger Device that turns saw on and off. Squeezing
trigger turns saw on. Releasing trigger turns saw off.
Trimming (Pruning) Process of cutting limb(s) from
a living tree.
Undercut An upward cut from underside of log or
limb. This is done while in normal cutting position
and cutting with top of guide bar.
CHAIN SAW NAMES AND
TERMS
Continued
4. Install guide bar onto saw body. Assemble center
slot of guide bar onto guide bar bolts.
5. To replace sprocket support, repeat step 3 in
reverse order. Firmly tighten drive sprocket screw
with #2 Phillips screwdriver (if applicable).
6. Place chain around drive sprocket, along top
groove of guide bar, and around guide bar nose.
Note: Make sure cutting edges of chain are fac-
ing in right direction. Position chain so cutting
edges on top of guide bar face guide bar nose (see
Figure 4, and indicator on side cover of saw).
CAUTION: Do not place chain on saw
backwards. If chain is backwards, saw
will vibrate badly and will not cut.
7. Insert tab of sprocket cover into slot on side cover
and rotate sprocket cover onto guide bar bolts
until sprocket cover rests against guide bar.
8. Place guide bar nuts, removed in step 2, over
guide bar bolts.
IMPORTANT: Tighten guide bar nuts finger tight
only.
9. Turning chain tensioning knob (Model 107625-
01, -02, 111174-01) or chain tensioning screw
(Model 107624-01, -02), adjust position of
adjustment block until it is aligned and inserted
into the round adjusting hole on guide bar (see
Figure 4 and Figures 5 and 6, page 8). Turning
chain tensioning knob or chain tensioning screw
counterclockwise will move adjustment block to
rear of guide bar. Turning chain tensioning knob
or chain tensioning screw clockwise will move
adjustment block to front of guide bar.
10. If needed, readjust guide bar nuts to finger tight only.
11. Adjust saw chain tension. Follow steps under
Saw Chain Tension Adjustment,
pages 8 and 9.
Guide Bar Nuts
Sprocket Cover
Drive Sprocket Screw or E-Ring
Sprocket Support
Guide Bar Bolts
Saw Chain
Guide Bar
Drive Sprocket
Cutting Edge
Figure 4 - Assembling Guide Bar and Chain
Adjusting Hole
Towards Guide Bar Nose