Craftsman 316.34107 Operator's Manual page 14

MAINTENANCE AND REPAIR INSTRUCTIONS
REPLACING THE GUIDE BAR
CAUTION:
source before checking or adjusting the
chain saw tension.
These instructions are for replacing a bar. The unit is fully
assembled when shipped.
NOTE: Always wear heavy gloves when handling the saw
chain.
Remove Old Bar
1. Place the power unit on a flat surface, on its side with
chain tensioner facing up.
2. Loosen knob (B) slightly by turning knob counter-
clockwise and then turn the chain tension ring (C)
counter-clockwise to relieve chain tension (Fig. 17).
3. To remove the sprocket cover (A), turn knob (B) com-
pletely counter-clockwise. (Fig. 17)
4. Remove saw chain from around the guide bar (E) and
the sprocket (F). Slide the guide bar (E) with tension
plate (D) attached, from the unit. (Fig. 18)
5. Remove screw with lock washer (G) from the tension
plate (D) to remove plate from the old bar. Then attach
tension plate (D) to the new bar using screw with lock
washer (G). Tighten securely with Phillips screw driver
(Fig. 19).
A
F
G
Disconnect the chain
saw from power
C
B
Fig. 17
E
D
Fig. 18
D
Fig. 19
Install Saw Chain
WARNING:
handling the saw chain.
1. Spread the chain out with the cutting edges (H) of the
chain pointing in the DIRECTION OF ROTATION.
2. Fit chain into groove of guide bar.
NOTE: The chain must be installed in the correct
direction (Fig. 20).
Install New Bar
1. Install bar and chain on to power unit. Turn the ten-
sion plate (D) counter-clockwise until chain fits
around sprocket (F) and guide bar (E) (Fig. 20A).
2. Install sproket cover (A) on to power unit (Fig. 20B)
3. For final adjustment, hold the tip of the bar (E) up and
tighten chain tension ring (C). Then tighten the knob
(B) (Fig.21).
4. Follow the tension adjustment instructions in the
next section.
D
F
Fig. 20A
C
14
Always use protec-
tive gloves when
H
Fig. 20
C
E
A
Fig. 20B
E
B
Fig. 21
D