Vari Hurricane F-600, Инструкция по эксплуатации, Страница: 19 / 41

F-600
19
Designation of recommended and by manufacturer approved V-belts on the machine:
1. V-belt of gearbox drive: OPTIBELT TX13 x 660Ld 6T6K
2. V-belt of blade drive: OPTIBELT TX17 x 1290Ld 6T6K
Ld = mean length of the belt
It is possible to use equivalent V-belts made by other manufacturers. However, the V-
belt model must be with no rubber on sides! Only such a model of the V-belt guarantees that
no belt stretching occurs and that the blade drive starting is smooth when letting-in the clutch.

 

Should a different belt model be used than the original spare part, the machine
manufacturer cannot guarantee a correct functioning of the transmission!
The procedure of replacing V-belts is as follows:
a) Drain petrol from the engine tank. Unscrew two front M8 bolts and unloose two rear
M8 bolts on the handlebars holder. Tilt the holder together with the handlebars
backwards.
b) Dismount the upper casing of gearbox and the front plastic casing of the belt.
c) Dismount the belt guiding in front of the front driven belt pulley of the blade.
d) Dismount the M6x35 bolt (see Fig. 12 below) at the tension pulley of the blade drive
belt.
e) Remove belts from the driven belt pulleys (leaving belts on the driving pulley on the
engine). Unscrew four bolts M8 from the engine plate and carefully remove the plate
from the machine together with the engine and the belts by pulling upwards.

Don’t dismount the bowden cable with the wire of engine revolutions control in any
case!

Never put the engine on the side. Oil might get into the exhaust or into the air
cleaner. The best engine seating is with the lower flange dwelling on two scantlings
that are at least 10 cm high.
f) Replace the worn belts with new ones. It is advised that both belts are replaced
together.
g) Assemble the machine in a reverse sequence of operations. Check the adjustment of
both tension pulleys prior to the assembly of casings (see „b)“).
h) Complete the machine assembly.
6.4.2 Adjustment of tension pulleys
Blade drive pulley (Fig. 12)
With the lever on the right handlebar grip fully pressed down, the pulley must ensure a
sufficient belt tension (spring on the cable being extended by about 10 mm as compared
with loose condition). Possible corrections are to be made by means of adjustment bolt No.
2 (see Fig. 14). With the lever switched off, the pulley must be tilted away from the
longitudinal machine axis at an angle of min. 5°. The wire in the Bowden cable of the
tension pulley must exhibit no slackness. In the case that the adjustment bolt is completely
screwed out and it is necessary to tighten the V-belt, the spring on the cable can be hooked
into the front hole on the arm of the tension pulley (see Fig. 12 in the middle; Note: this
connection can be used already from the manufacturer) and belt tension can be adjusted
once again. Guiding plate 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 convex side.