Changing The Engine Oil; Adjusting The Clutch - Polini XP 4T CROSS Uso Y Mantenimiento

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7.4 CHANGING THE ENGINE OIL

DANGER. Risk of burns! Wait for the engine to cool before remo-
ving the oil drain screw.
Stand the motorcycle upright.
- Remove the oil drain screw from the bottom of the gearbox casing
(photo 24) and leave the old oil drain out.
- Do not throw spent oil into the environment. Dispose of it correctly
through authorised collection points.
- Screw the drain screw back in. Add 600 grams of "SAE 20W50"
engine oil. Only employ highly detergent engine oil classified for
service API SF or SG.
7.5 ADJUSTING ENGINE IDLING SPEED
Warm up the engine before adjusting the idling speed. Leave the
engine idle in neutral gear with the throttle closed. Turn the idle speed
adjustment screw on the right hand side of the carburettor in or out to
achieve the lowest engine speed possible without running becoming
irregular (for some minutes) (photo 25).
DANGER. The rear wheel will spin if it is not in contact with the
ground or locked by the brake. Accidental contact with a spinning
wheel or tyre can cause serious personal injuries.
7.6 ADJUSTING THE AIR SCREW
The air screw can be adjusted in order to obtain better performance
when the bike is out of idling speed.
- If the engine has difficulty in curve (rich mixture) unscrew the air
screw.
- If the engine has difficulty in curve (poor mixture) screw the air
screw (photo 26).
WARNING. The adjusting screw is near the cylinder. Pay atten-
ENGLISH
OIL CAP
tion not to burn oneself while adjusting it.
7.7 ADJUSTING THE THROTTLE CONTROL AND CABLE
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Make sure that the accelerator grip operates smoothly and that the
play in the throttle cable measures 3-5 mm. If play exceeds this
measurement, reduce play by screwing out the adjuster on the top of
the carburettor (photo 27) or on the throttle grip.
WARNING. Do not make repairs whenever necessary can lead to
serious personal accidents and serious damage to the motorcycle.
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7.8 ADJUSTING THE CLUTCH

Should the clutch adjustment with the clutch lever (photo 11) be
insufficient, it is possible to screw the adjuster "1" (photo 28) located
under the cover of the clutch casing.
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WARNING. Often lubricate the clutch shaft "2" in order to avoid
it to grip while the casing moves. Generously lubricate the part after
disassembling it by removing the pin "3".
7.9 HYDRAULIC BRAKES SYSTEM AND BRAKE PADS
This model is provided with a front and a rear hydraulic brake. When
the brake pads wear, the brake fluid level goes down. Therefore,
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AIR SCREW
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3/5 mm.
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