F-700H
1.5.4 Replacing the V-belts and adjusting the tension pulleys
1.5.4.1 Replacing the V-belts
Replace the V-belt with a new one
whenever cracks or tears appear on the surface of the belt, and also when the belt is worn out by
the operation up to the supporting fibers, or after a maximum of 200 hours of operation. The maximum elongation of the blade drive belt in
this machine is considered to be that which has a distance between the inner surfaces of the belt (when the mower blade clutch lever is
depressed) of less than 7 mm.
Marking of recommended, manufacturer-approved, V-belts on the machine:
Gearbox drive V-belt
PIX-Lawn Master 4L230K
Blade drive V-belt
OPTIBELT TX17x1290 Ld VU6K
If a belt other than the original spare part is used, the machine manufacturer does not guarantee the full and
correct function of the transmission!
The procedure for replacing V-belts is as follows:
●
Drain the petrol from the engine tank. Remove the plastic ball on the accelerator lever. Remove the accelerator lever from the
handlebar rail.
Under no circumstances remove the bowden cable from the motor control!
Then remove (or fold back) the
handlebar mount (4x M8x16 screw) with the handlebars.
●
Remove the transmission upper cover.
●
Remove the belt guide in front of the front driven blade pulley.
●
Remove the belts from the driven pulleys (leave the belts on the engine). Unscrew the four M8x16 bolts from the engine plate
and carefully pull up the engine together with the engine plate and remove the belts from the machine.
Never place the engine on its side. Oil could flow into the exhaust or air cleaner. Lay it with the lower flange
preferably on two beams at least 10 cm high.
●
Replace worn belts with new ones. We recommend replacing both belts at the same time.
●
Assemble the machine in the reverse order of operations. Before mounting the covers, check the adjustment of both tension
pulleys.
●
Complete the assembly of the machine.
1.5.4.2 Adjusting the tension pulleys
●
Blade drive tension pulley:
When the lever on the right handle is fully depressed, the pulley must sufficiently tension the belt
(the spring on the cable must be extended by about 10 mm compared to the free state). If necessary, adjust using the adjusting
screw. With the lever off, the pulley must be tilted from the longitudinal axis of the machine in the range of 0 ° to 5 ° (maximum) =
the back of the belt about 1.5-2 cm from the bottom of the tensioner pulley. The cable in the bowden cable of the tensioner pulley
must be free of play. If the adjusting screw is fully unscrewed and the V-belt needs to be tensioned, the spring on the cable can be
hooked into the front hole on the tensioner pulley arm (this connection can be used from the manufacturer) and the belt tension can
be readjusted. The guide plates on the right side of the machine must be parallel to the belt and at a maximum distance of 1-2 mm
from the belt back.
●
Wheel drive tension pulley:
When the lever on the left handle is fully depressed, the pulley must sufficiently tension the belt
(the spring on the cable must be extended by about 10 mm compared to the free state). If necessary, adjust using the adjusting
screw. With the lever off, the pulley must be parallel to the longitudinal axis of the machine. The cable in the bowden cable of the
tensioner pulley must be free of play. If the adjusting screw is fully unscrewed and the V-belt needs to be tensioned, the spring on the
cable can be hooked into the front hole on the tensioner pulley arm (note: this connection can be used at the factory) and the belt
tension can be readjusted.
1.5.4.3 Adjusting the cables
The list of bowden cables and the description in
To ensure low actuating forces on the actuator switching levers, lubricate the cables in the bowden cables at least twice a season with
one of the oils in the sprayer (eg SILKAL, MD Spray, WD40). The correct adjustment of the drive controls is also necessary for the correct
function of the machine.
●
The cable of the blade brake
2
must always have a slight play (approx. 1 mm) when the lever is released so that the brake
brakes sufficiently. In order to achieve the cable clearance in the bowden cable, the adjusting screw must be screwed into the
chassis during adjustment.
●
The cable of the blade pulley
3
and the cable of the wheel drive
1
must be free of play, slightly tensioned. To tighten the
cables, the adjusting screws must be unscrewed from the chassis when adjusting.
●
After adjusting the cable of the switchboard
6
, the cable end of the switchboard cable
8
must be located approx. 5 mm from
the upper end of the cable switchboard
7
. The ends of the blade brake cable
2
and blade pulley cable
3
must be in the
switchboard cable end
8
after adjustment. If one of the cables is free, the blade drive will not work properly
23
Use only the belt recommended by the manufacturer. When using a belt from other manufacturers, proper transmission function cannot be guaranteed.
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