Refitting The Camshaft - APRILIA QUASAR 125 2003 Workshop Manual

ENGINE
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3.2.11 REFITTING THE CAMSHAFT

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Remove flywheel housing, see 3.2.2 (REMOVING FLYWHEEL UPPER
AND LOWER HOUSINGS).
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Move piston to bottom dead centre, by taking care that the flywheel notch
(T) is opposite (180°) to the pan fin.
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Turn camshaft so as to fully close both valves.
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Drive chain onto toothed gear by taking care that, after being installed onto
camshaft, the reference marks (1) are parallel with the head edge.
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Remove tensioner top screw (2) and remove the spring from the inside.
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Push on the stop tooth to move back rocker arm.
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Change seal and refit mount. Tighten the two screws (3).
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Fit spring and tensioner screw, then manually turn crankshaft by 3 or 4 turns
and check once more timing reference marks correct positioning.
Before turning crankshaft by hand, check that spark plug is not into its
location.
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Proceed
CLEARANCE).
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Refit the complete camshaft mount and, working crossways, tighten the four
screws (4).
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Refit head cover and, working crossways, tighten the four screws (5).
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4
5
to valve adjustment, see
QUASAR 125-180
3.2.12 (ADJUSTING VALVE
Release 00/2003 - 09