Dolmar AT-3724 U Manual De Instrucciones página 17

Slightly expand the wire guard outward and then insert it
into the holes of the protector. (Fig. 26)
NOTE:
• Do not expand the wire guard outward too much.
Otherwise it may break.
When wire guard is not in use, lift it for the idle position.
(Fig. 27)
Installing nylon cutting head
CAUTION:
• If during operation the nylon cutting head
accidentally impacts a rock or hard object the
trimmer should be stopped and inspected for any
damage. If the nylon cutting head is damaged it
should be replaced immediately. Use of a damaged
nylon cutting head could result in serious personal
injury.
NOTICE:
• Be sure to use genuine Dolmar nylon cutting head.
Turn the tool upside down so that you can replace the
nylon cutting head easily.
Insert the hex wrench through the hole on the protector
cover and rotate the receive washer until it is locked with
the hex wrench. The nylon cutting head onto the threaded
spindle directly and tighten it by turning it
counterclockwise. Remove the hex wrench.
To remove the nylon cutting head, turn the nylon cutting
head clockwise while holding the receive washer with the
hex wrench. (Fig. 28)
Installing the cutter blade (country
specific)
WARNING:
• The outside diameter of the cutter blade must be
230 mm. Never use any blade exceeding 230 mm in
outside diameter.
CAUTION:
• The cutter blade must be well polished, free of cracks
or breakage. Polish or replace the cutter blade every
three hours of operation.
• Always wear gloves when handling the cutter blade.
• Always attach the blade cover when the tool is not in
use or is being transported.
• The cutter 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.
NOTICE:
• Be sure to use genuine Dolmar cutter blade.
Turn the tool upside down so that you can replace the
cutter blade easily.
To dismount the cutter 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. 29)
Mount the cutter blade onto the shaft so that the guide of
the receive washer fits in the arbor hole in the cutter
blade. Install the clamp washer and secure the cutter
blade with the hex nut with 13 to 23 Nm of tightening
torque during holding the receive washer with hex
wrench. (Fig. 30)
Make sure that the blade is the left way up. (Fig. 31)
Hex wrench storage (Fig. 32)
When not in use, store the hex wrench as shown in the
figure to keep it from being lost.
OPERATION
Correct handling of tool (AT-3724 U)
Correct posture
WARNING:
• Always 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.
As shown in the figure 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. 33)
Attachment of shoulder harness (Fig. 34)
Wear the shoulder harness on your back and buckle it up
until a click is heard. Make sure that it cannot be taken off
with pulling it off. Hang the tool as shown.
WARNING:
• Be extremely careful to maintain control of the tool
at this time. Do not allow the tool to be deflected
toward you or anyone in the work vicinity. Failure to
do so could result in serious injury.
Adjustment of the hanger position and shoulder
harness
When replacing battery or accessories with others, the
weight balance of the tool may change. In such case,
adjust the hanger position and shoulder harness length as
follows.
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.
Adjust the hanger position and shoulder harness length
so that: (Fig. 35)
– the hanger positions 750 mm or higher from the
ground,
– the cutting tool positions 100 mm to 300 mm high from
the ground and
– the unguarded part of cutting tool is horizontally
750 mm or farther away from the hanger.
After adjusting the hanger position, tighten the screw with
the wrench securely.
Correct handling of tool (AT-3731 C)
Correct posture
WARNING:
• Always position the tool on your right-hand side so
that the barrier 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.
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