APRILIA SL 750 SHIVER Service Station Manual page 48

Maintenance
•
Using a thickness gauge, measure the
distance between the tip of the crank-
shaft and the valve bowl.
•
Take note of the measurement.
If valve clearance is not within the tolerance range,
adjust as follows:
•
Take the engine to the TDC.
•
Lock the camshafts by using the cor-
responding timing pins.
Specific tooling
020719Y Timing pin
Characteristic
Valve clearance at intake
0.11 - 0.18 mm (0.0043 - 0.0071 in)
Outlet valve clearance
0.16 - 0.23 mm (0.0063 - 0.0091 in)
•
Remove one camshaft at a time
•
Leave the other camshaft assembled and blocked by means of the timing pin.
CAUTION
IF BOTH CAMSHAFTS ARE REMOVED, THE ENGINE SPINS MAKING TIMING NECESSARY.
•
Remove the bowl tappets and the ad-
justment shims using a magnet.
NOTE
GREASE THE BOWL TAPPETS AND THE AD-
JUSTMENT SHIMS PROPERLY EACH TIME
THEY ARE REMOVED.
•
Replace calibrated pads with a pad
thick enough to correct the valve clear-
ance previously detected.
•
List of calibrated break pads:
1. Calibrated pad 2.60
2. Calibrated pad 2.65
3. Calibrated pad 2.70
4. Calibrated pad 2.75
5. Calibrated pad 2.80
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SL 750 SHIVER