Makita 7104L Technical Information page 6

R
epair
4) Refer to Fig. 16, Fig. 17, Fig. 18 and Fig. 19.
Precisely adjust M8x44 Hex. bolts and Stopper to make a rectangular hole with the same size into the wooden workpiece
as illustrated in Fig. 20. When the machine with 16.5mm cutter chain is used, Fig. 20 shows the cutting size preset in
Makita plant. Meanwhile, if preferring to make a 30mm long rectangular hole, adjust M8x44 Hex. bolt for No. 2 set
position to lean Chain bar assembly to the limit.
Fig. 16
Lever C is hooked on rib of Rotor holder
directly as below. It is original position
of Chain bar.
Lever C
Rib of Rotor holder
Original position (vertical against ground)
Fig. 19
Stopper
Fig. 20
1. Cutting by a single stroke
at vertical position.
16.5mm
3. Cutting by each stroke at:
1)vertical position, No.1 set position and No. 2 set position when Lever B complete is shifted forward.
2)vertical position, No.1 set position and No. 2 set position after Lever B complete is shifted backward.
Total six strokes
5) Adjust the tension of 16.5mm cutter chain. When there is a clearance of
approx. 5 up to 6mm between the chain bar and the cutter chain, the tension
on the cutter chain is adequate. See Fig. 21.
Note: Do not touch the cutting edges of the cutter chain when pulling it.
6) Adjust the clearance between Chain bar holder and Rotor holder so that
Chain bar ass'y can be tilted smoothly without stuck by moving the tips of
three M5X16 Hex. bolts backward and forward.
Fig. 17
Tip of M8x44 Hex. bolt for No.1 set position
is hooked on rib of Rotor holder directly. It is
No.1 set position of Chain bar.
Rib of Rotor
holder
M8x44 Hex. bolt
for No.1 set position
No.1 set position of Chain bar
<Backward> Lever B complete
<Forward>
If the travel distance is set at 13.5mm by shifting Lever B complete forward,
a 16.5mm wide rectangular hole can be cut in a single stroke.
Total 30.0mm wide holes can be made after shifting Lever B complete backward
and repeating a single stroke.
13.5mm
2. Cutting by each stroke at:
1)vertical position and No.1 set position when Lever B complete is shifted forward.
2)vertical position and No.1 set position after Lever B complete is shifted backward.
Total four strokes
Approx. 52mm
90mm
120mm
Fig. 18
Tip of M8x44 Hex. bolt for No.2 set
position is stuck with Lever C directly.
It is No.2 set position of Chain bar.
Lever C
M8x44 Hex. bolt for
No.2 set position
No.2 set position of Chain bar
30mm
Fig. 21
Chain bar
5 up to 6mm
P 6 / 8
Cutter chain