Vari Agatha, Translation Of The Original Instructions, Page: 41 / 68

Agatha
3.5.4 B
ELT TRANSMISSION
–
AUTOMATIC BRAKE
The cutter is equipped with modern belts that do not require special care. It is only necessary to control them regularly and exchange
them should you see cracks or breaks on their surface. It is necessary to check on the tightening pulleys setting after the first 5 hours of
operation, as the belt is being run-in. It is necessary to check the tightening pulleys function during the running-up, in order to prevent belt
damage caused by insufficient tension when the belt extends. It is also important to check the function of the automatic disc brake during
the running-up.
The correct belt transmission function is easy to check:
a) Turn on the wheel drive and let the cutter deal with a 10 cm terrain obstacle – e.g. a kerb.
b) The engine stalls when you press the wheel drive clutch quickly. The belt already starts to grip (the disc starts
spinning) in just 1/3 step of the wheel drive clutch lever.
If you had problems with at least one of these, the tightening pulleys need adjustment as per 3.5.4.1 .
3.5.4.1 T
IGHTENING PULLEYS ADJUSTMENT

Seek authorised service in case you lack appropriate manual skills.

For electric starter mowers, cut the cable tie that holds the wiring bundle to the gearbox upper cover.

Secure the wiring bundle (DS-521BiS) from contact with moving transmission parts. It may be damaged or
destroyed.
To point 3.5.4 a) ) : As per
Pict.17
loosen the plastic nut 1 and fold up the upper gearbox cover 2 and set it aside. Both belts
( Pict.18 ) that move the machine forward are now visible. Try again to overcome terrain irregularities and visually check belt slipping.
1) If the belt A slipping occurs on the right side of the cutter , tighten it by unscrewing the bolt 3 at the cable
95
terminal in the direction of the arrow (away from the frame) for approximately 1 mm, and repeat the visual check as in
3.5.4 a)) . Continue tightening until condition a)) is met and at the same time the cutter start moving forward while wheel drive
clutch lever is loose. If the bolt 3 cannot be unscrewed any further, screw it in completely against the direction of the arrow and
hook the spring at the end of the cable into a further opening in the pulley arm. Repeat tightening the belt until condition a)) is
met.
2) If there is belt B slipping between the engine and gearbox , tighten it with the tightening pulley 4 . Loosen the
pulley by loosening the nut placed below the pulley. Use an appropriate tool (e.g. steel hook) to tighten the pulley in the direction
of the arrow and tighten the nut while the pulley is stretched. Then check the right function of the wheel drive.
In case the tightening pulleys cannot be adjusted to prevent belt slipping, it is necessary to exchange the belt.

After adjusting, be sure to secure the wiring bundle with the replacement tape back to the gearbox cover. You
have two tapes left when assembling the machine.
To point 3.5.4 b) ) : Dismount the front plastic cover
1
in
Pict.2
so that you can see the belt and disc drive pulley (
Pict. 19
).
( Marking 1 a 2 in pictures 18 and 19 are the same and belong to the same cable.)
1) Tighten the belt by unscrewing the bolt
96
1 in Pict.19 for approximately 1 mm in the direction of the arrow (away from the
frame) and repeat the check according to 3.5.4 b)) . Continue tightening until condition b)) is met and at the same time the belt
transmission grip
97
stops while wheel drive clutch lever is loose. If the bolt 1 cannot be unscrewed any further, screw it in
completely against the direction of the arrow and hook the spring at the end of the cable into a further opening in the pulley arm.
Repeat tightening the belt until condition
b)) is met.

Check the automatic brake function after every adjustment!
3.5.4.1.1 V-
BELT EXCHANGE
Exchange the V-belt with a new one
98
every time you see cracks or breaks in its surface, or when it is so deteriorated that it cannot be
tightened with the tightening pulleys. Exact instructions for belt exchange are not included here, as their contents exceed the limitations of
this manual. When exchanging the belt, follow
Pict.20
. Follow belt track around all guide elements!

Seek authorised service in case you lack appropriate manual skills.
3.5.4.2 B
RAKE FUNCTION CONTROL AND ADJUSTMENT
Check the automatic brake function after every 10 hours of use. (Current control can be done during operation.) Every time you release
the disk drive clutch lever, the automatic brake must stop the disc within 5 sec.

Do not continue working with the cutter unless you remove the automatic brake defect.

Seek authorised service in case you lack appropriate manual skills.
In case the brake does not stop the cutting disc in the given time span, it is necessary to adjust the brake cable 2 Pict.18 , 19 .
Adjusting screw, which tightens the brake cable 2 to the cutter frame Pict.18 , needs to be screwed in against the direction of the arrow
(towards the frame), so that the axial clearance of the brake cable in the adjusting screw is 1 mm. Check the automatic brake function. If
complete tightening the screw 2 does not offer adequate brake effect, tighten the adjusting screw of the brake cable on the handlebars so
that the axial clearance of the brake cable in the adjusting screw is 1 mm. Check the automatic brake function 99 .

If, after the adjustment
100
, the brake does not work properly, contact an authorised service center.
95 You may also use the bolt attached to handlebar rail on the other side of the cable. In this case, screw the bolt in the direction away from the rail.
96 You may also use the bolt attached to handlebar rail on the other side of the cable. In this case, screw the bolt in the direction away from the rail.
97 Manifests itself by chattering and irregular belt grip.
98
Use V-belts recommended by the manufacturer only. Proper transmission function cannot be guaranteed when using other V-belts.
99
You may follow opposite instructions. First tighten the screw of the brake cable (towards handlebar rail) on the handlebars so that the axial clearance in the adjusting screw is 1 mm.
100
The condition of the axial clearance of the brake cable in the adjusting screw is met.
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