to check the automatic blade brake function during its run-in.
2.5.4.1 ADJUSTMENT OF THE BELT DRIVE TENSIONER PULLEYS
This simple test will determine the correct function of the tensioner pulleys.
a) +%! The machine with its travel turned ON has to overcome the terrain unevenness of 10 cm high - curb is
suitable, for example.
b) H&D%! The belt starts driving (the working tool starts spinning) already at the 1/3 of the working
tool drive lever clutch step.
If at least one of the checks failed, it is necessary to adjust the tensioning pulleys!
If you are not sufficiently manually skilled, have the operations done by an authorized service centre.
2.5.4.1.1 TRAVEL FUNCTION ADJUSTMENT
If you are not sufficiently manually skilled, have the operations done by an authorized service centre.
For electric starter brush cutters, we recommend that you cut the strap that holds the harness to the top gearbox cover.
Remove the rear upper plasticD(~ > (in
D:>?
), so you can see both belts securing the machine’s forward travel.
B(B
DFBBD D$:" ,( D,:
Try again to overcome the terrain inequality and visually check which belt is slipping.
(Marking
l
9
9
in D:>, >o9>pand
> is common and always applies to the same bowden.)
1) "%B($BDB%BD(~(
D:o
), tighten it by unscrewing the screw (
on
D:>p
) the bowden
end
o
in the arrow direction (away from the frame) by approximately 1 mm. Continue tensioning until the machine overcomes
some uneven terrain and simultaneously does not start moving forward when the travel clutch lever is released. If it is no longer
possible to unscrew the bolt (), unscrew it fully against the direction of the arrow and hook the spring at the end of the cable
into the distal opening in the pulley arm. Then repeat the steps to tighten the belt.
2) "%B($(FBDD(~, tighten it with its tensioning pulley ( > in
D: >t
). Release the
tensioning pulley by releasing the nut located on the engine plate using a suitable tool (such as a screwdriver) and tension the
pulley in the arrow direction. Once tensioned, tighten the nut, please. Then check the correct travel operation.
l,BD$,BB($9B( (
$:
Upon completion of the adjustment, be sure to attach the harness to the gearbox cover with a spare pull tape. Two
straps are left upon the machine assembly.
2.5.4.1.2 WORKING TOOL DRIVE FUNCTION ADJUSTMENT:
Remove front $ > in
D:>
step }>, so you can see the disk drive belt and pulley (
D:>
). (
Marking
l
,
and
in D:>, >o, >p and > s common and always applies to the same bowden.
)
1) +DBB((,FD
p
bolt l in
D:>o
by approximately 1 mm in the arrow direction and check the working tool
drive clutch function. Continue tensioning until the belt drive starts spinning the working tool in about 1/3 of the lever step and at
the same time the belt drive is not carried away when the tool clutch lever is released. If it is no longer possible to unscrew bolt
l, screw it in fully against the arrow direction and hook the spring at the end of the cable into the distal opening in the pulley
arm. Then repeat the steps to tighten the belt.
lF,B&B (&%%, B$?::A:@:
2.5.4.2 V-BELT CHANGE
Replace the V-belt
with a new one if the belt is so worn out by the operation that it is no longer possible to tension it with its tensioning
pulleys. The exact process of changing the individual belts is not provided here because it would exceed the scope of these operating
instructions. During the replacement, follow
D:?
and
D:o
. K(B($BBD !
If you are not sufficiently manually skilled, have the operations done by an authorized service centre.
2.5.4.3 BRAKE FUNCTION CHECK AND ADJUSTMENT
Check the automatic brake function after every 10 hours of operation. You may perform a continuous check during your work. 8B
BF&DB9B (& $B$DF&DFB:
7F&D,B (&%:
If you are not sufficiently manually skilled, have the operations done by an authorized service centre.
If the brake does not stop the spinning working tool within the aforementioned time, it is necessary to adjust the bowden of brake in
D:>
,
>o
and
>
. Screw in the adjusting bolt that secures the brake bowden cable ( in
D:>o
) to the machine frame against the
arrow direction (towards the frame) so that the axle clearance of the cable in the adjusting bolt is 1 mm. Check the automatic brake
85
Only for .
86
You may also utilise bolt
in D:> on the opposite end of the bowden attached to the handlebar crossbar. In this case, screw it in away from the handlebar crossbar, in the
arrow direction.
87
You may also utilise bolt
l
in D:> on the opposite bowden end attached to the handlebar crossbar. In this case, screw it away from the handlebars.
88
Use exclusively original spare parts. "%,(% B %9$$$%B(D:
@@
Revize 10/2019
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