Operation - Makita DOLMAR AT-3723 U Betriebsanleitung

Adjust the handle to an angle that provides a comfortable
working position and then secure by firmly hand-
tightening knob. (Fig. 14)
Installing the guard
WARNING:
• Never use the tool without the guard illustrated in
place. Failure to do so can cause serious personal
injury.
• Always use the tool with the approved combination of
the safety equipments. Otherwise contact with a cutting
tool may cause serious injury.
• Permitted combination for the cutting tool and the
guard may differ from country to country. Follow your
region's regulations.
For metal blade (Fig. 15 & 16)
For nylon cutting head or plastic blade
CAUTION:
• Take care not to injure yourself on the cutter for cutting
the nylon cord when installing nylon cutting head or
plastic blade. (Fig. 17)
Align the clamp on the pipe with the protector. And tighten
them with bolts. (Fig. 18)
Installing the metal blade (optional
accessory)
WARNING:
• The outside diameter of the metal blade must be
230 mm. Never use any blade exceeding 230 mm in
outside diameter.
CAUTION:
• The metal blade must be well polished, free of cracks
or breakage. Polish or replace the metal blade every
three hours of operation.
• Always wear gloves when handling the metal blade.
• Always attach the blade cover when the tool is not in
use or is being transported.
• The metal blade-fastening nut (with spring washer)
wears out in course of time. If there appears any wear
or deformation on the spring washer, replace the nut.
Ask your local authorized service center to order it.
• Replace the cup in case of crack or breakage due to
attrition.
NOTICE:
• Be sure to use genuine Dolmar metal blade.
Turn the tool upside down so that you can replace the
metal blade easily.
Mount the metal blade onto the shaft so that the guide of
the receive washer fits in the arbor hole in the metal
blade. Install the clamp washer and secure the metal
blade with the hex nut with 13 to 23 Nm of tightening
torque during holding the receive washer with hex
wrench. (Fig. 19)
To dismount the metal blade, insert the hex wrench
through the hole on the protector cover and the gear case.
Rotate the receive washer until it is locked with the hex
wrench. Loosen the hex nut (left-hand thread) with the
socket wrench and remove the nut, clamp washer and
hex wrench. (Fig. 20)
Make sure that the blade is the left way up. (Fig. 21)
Installing nylon cutting head or plastic
blade (optional accessory)
CAUTION:
• If the nylon cutting head/plastic blade accidentally
impacts a rock or hard object during operation,
stop the tool and inspect for any damage. If the
nylon cutting head/plastic blade is damaged,
replace it immediately. Use of a damaged cutting tool
could result in serious personal injury.
NOTICE:
• Be sure to use genuine Dolmar nylon cutting head/
plastic blade.
Turn the tool upside down so that you can replace the
nylon cutting head easily.
Insert the hex wrench through the hole on the motor
housing and rotate the receive washer until it is locked
with the hex wrench. Place the nylon cutting head/plastic
blade onto the threaded spindle directly and tighten it by
turning it counterclockwise. Remove the hex wrench.
To remove the nylon cutting head/plastic blade, turn it
clockwise while holding the receive washer with the hex
wrench. (Fig. 22 & 23)
Hex wrench storage (Fig. 24)
When not in use, store the hex wrench as shown in the
figure to keep it from being lost.

OPERATION

Correct handling of tool
WARNING:
• Be extremely careful to maintain control of the tool
at all times. Do not allow the tool to be deflected
toward you or anyone in the work vicinity. Failure to
keep control of the tool could result in serious injury to
the bystander and the operator.
Correct posture
WARNING:
• Always hold the both grips firmly and position the
tool on your right-hand side so that the shaft of the
left handle is always in front of your body. Correct
positioning of the tool allows for maximum control and
will reduce the risk of serious personal injury caused by
kickback.
Fit the shoulder harness and hang the tool firmly on your
right side so that the shaft of the left handle is always
ahead of you. (Fig. 25)
Attachment of shoulder harness
Wear the shoulder harness on your left shoulder. Make
sure that the buckle cannot be taken off with pulling it off.
Hang the tool as shown. (Fig. 26)
The buckle is provided with a means of quick release.
Simply squeeze the sides of the buckle to release the tool.
(Fig. 27)
Adjustment of the hanger position and shoulder
harness
To change the hanger position, loosen the fixing screw on
the hanger with the supplied wrench and then move the
hanger and the cushion. The cushion can be moved
easily by twisting it.
15