Chain Backlash Check - APRILIA Tuono V4 1100 2021 Manual

15 / 42
Final drive gear ratio (Tuono V4 1100)
15 / 40
Type
525
With sealed master link
Model
Regina 110 links

Chain backlash check (04_35)

To check the clearance:
•
Shut off the engine.
•
Rest the vehicle on its stand.
•
Select neutral.
•
Check that the vertical oscillation at a point between the pinion and the
sprocket on the lower branch of the chain is about 20 mm (0.78 in).
•
Move the vehicle forwards to check the vertical deflection of the chain in other
positions; the chain deflection must be constant throughout the entire rotation
of the wheel.
04_35
if the clearance is uniform, but greater or less than 20 mm (0.78 in), carry out the
adjustment.
CAUTION
IF THE CLEARANCE IS GREATER IN SOME POSITIONS IT MEANS THAT SOME
ELEMENTS OF THE CHAIN ARE CRUSHED OR HAVE SEIZED UP. IN THIS CASE
THE CHAIN SHOULD BE REPLACED.
LUBRICATE THE CHAIN REGULARLY TO PREVENT THE RISK OF SEIZURE.
191