ENG
INFORMATION ON ADJUSTMENTS
70
The table indicates the pre-stretch values which can be obtained with the relevant transmission gear set.
Important
Set the pre-stretch according to the film resistance and quality in order to obtain a low consumption.
Pre-stretch
percentage
Gear code (L)
No. of gear teeth (L) Gear code (N)
No. of gear teeth (N)
150%
2540300068
34
2540300070
85
200%
2540300003
29
2540300002
90
250%
2540300165
25
2540300164
94
300%
2540300027
24
2540300028
95
15.
Fit the disc (P) and correctly fasten it to the gear (Q) of the new transmission ratio.
16.
Fit the gear (N) of the new transmission gear set.
17.
Position the gear with the disc side (P) coupled with the clutch (Q).
18.
Fit the retaining ring (M).
19.
Fit the gear (L) of the new transmission gear set.
20.
Fit the retaining ring (H).
21.
Fit the pulley (D).
22.
Fit the retaining ring (G).
Important
During reassembly phases, make sure that coupling tabs are correctly
inserted.
23.
Rest the plate (F) on the stud bolts, paying attention to fit the belt (C) on the pulley (D).
24.
Tighten the screws (E).
25.
Tension the belt (C) using the tensioner (B).
26.
Manually turn the pre-stretching rollers in both directions to correctly seat the coupling between belt and
pulleys.
27.
Check the belt tensioning again and properly adjust it if necessary.
28.
Refit the guard (A) when finished.
