Specifications

•
Undo and remove the four head cover
fixing screws and collect the sealing O-
rings.
•
Remove the head cover together with
the gasket.
•
Loosen the nut (1).
•
Use a screwdriver to act on the set
screw (2) until the following clearances
are obtained:
Inlet valve: 0.10 mm (0.0039 in)
Outlet valve: 0.15 mm (0.0059 in)
•
The measurement must be done using
a special thickness gauge .
CAUTION
IF CLEARANCE IS LARGER THAN RECOMMENDED, THE
TAPPET WILL BE NOISY. OTHERWISE, THE VALVES DO
NOT CLOSE CORRECTLY, WHICH CAN LEAD TO PROB-
LEMS SUCH AS:
•
PRESSURE DROP;
•
ENGINE OVERHEAT;
•
VALVE BURNOUT, ETC.
Braking system
Level check
Brake fluid check
•
Place the vehicle on the service stand.
•
For the front brake, turn the handlebar fully to the right.
•
For the rear brake, keep the vehicle upright so that the fluid in the reservoir is at the same
level with the plug.
•
Make sure that the fluid level in the reservoir is above the "MIN" reference mark:
MIN = minimum level
MAX = maximum level
If the fluid does not reach at least the "MIN" reference mark:
•
Check brake pads and disc for wear.
•
If the pads and/or the disc do not need replacing, top-up the fluid.
GRISO 8V - 1200 Maintenance
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