Makita 7104L User Manual download pdf (Page 7)

2. Longitudinal (length) enlargement

Hole length can be determined in three steps shown in the

table below.

NOTE:

• A hole a little longer than predetermined may be cut

depending upon the cutter chain tension.

• The adjusting hex bolts are factory adjusted for cutting

holes 90 mm long in the No. 1 set position and 120 mm

long in the No. 2 set position.

Push down the right-hand grip while raising the left-hand

grip. Make sure that the adjusting hex bolt slips into place

securely. (Fig. 11)

Loosen the hex nut securing the adjusting hex bolt. Turn

the adjusting hex bolt until the cutter chain reaches the

desired position, then tighten the hex nut.

WARNING:

• When using pressure to turn the adjusting hex bolt or

hex nut, be careful not to allow the adjusting hex bolt to

slip off the set position.

To bring the cutter chain back to the perpendicular (origi-

nal) position, pull the lever (C) toward you while pressing

down on the right-hand grip and slightly raising the left-

hand grip and move the cutter chain back to its original

position. (Fig. 12)

When cutting a hole, first use the perpendicular position,

then No.1 set position and finally No.2 set position.

Always safely hook the tool head back onto the hook

when changing the cutter chain position. (Fig. 13)

When enlarging a hole both transversely and longitudi-

nally, cut the holes in the order indicated from No. (1) to

(6) as shown. This makes for more easy and efficient hole

enlargement. (Fig. 14)

WARNING:

• Never attempt to enlarge a hole with the cutter chain

still within the hole. This will cause unstable and dan-

gerous operation.

• Never angle the cutter chain when cutting the first hole,

or a dangerous kickback may result. Always have the

cutter chain set to the perpendicular position when cut-

ting the first hole.

Lap joints up to 130 mm can be cut with this tool. (Fig. 15)

NOTE:

• Lap joints can be cut only on the front (side away from

you) of the workpiece.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

Replacing carbon brushes

Remove and check the carbon brushes regularly. Replace

when they wear down to the limit mark. Keep the carbon

brushes clean and free to slip in the holders. Both carbon

brushes should be replaced at the same time. Use only

identical carbon brushes. (Fig. 16)

Use a screwdriver to remove the brush holder caps. Take

out the worn carbon brushes, insert the new ones and

secure the brush holder caps. (Fig. 17)

Lubrication

After use, remove dirt, chips and foreign matter adhering

to the tool. Then oil the moving parts (especially cutter

chain) and the contact portions.

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be per-

formed by Makita Authorized Service Centers, always

using Makita replacement parts.

ACCESSORIES

CAUTION:

• These accessories or attachments are recommended

for use with your Makita tool specified in this manual.

The use of any other accessories or attachments might

present a risk of injury to persons. Only use accessory

or attachment for its stated purpose.

If you need any assistance for more details regarding

these accessories, ask your local Makita service center.

• Cutter chain

• Chain bar for 30 mm

• Sprocket 4 for 30 mm

• Oil supply (100 cc)

Cutter chain position Hole length to be cut

Original position 52.5 mm

No.1 set position 52.5 mm – 105 mm

No.2 set position 77.5 mm – 130 mm

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Makita 7104L User Manual Page 7

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