MOTO GUZZI CALIFORNIA JACKAL Werkstatt-Handbuch Seite 81

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T
APPET BACKLASH
After the first 500÷1500 km (300÷1000 mi) and after evey
10000 km(6000 mi), or when the timing system becomes
very noisy, check the backlash between the valves and
the equalizers.
Adjustment must be carried out when the engine is cold
, with the piston at top dead center (T.D.C), in compression
stage (valves closed).
Work as follows:
• Remove the head cover "A" by unscrewing the eight
screws"B"
• Loosen the nuts "C";
• Loosen or unscrew the adjustment screw "D" until you
obtain the following backlashes:
- Intake valve 0,10 mm;
D - Exhaust valve 0,15 mm
This measurement is effected by inserting a feeler gauge
"E" between the rocker and the valve.
Remeber that if the backlash is greater than the
prescribed one, the tappets will be noisy. If it is less, the
valves will not close well, thereby causing the following
problems:
• Loss of pressure;
• Engine overheating;
• Valve burning-out, etc
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CHEDULED AINTENANCE