Inspecting The Cylinder Head; Inspecting The Timing System Components; Inspecting The Valve Sealings - APRILIA SR MAX 125 ie Service Station Manual

SR MAX 125 ie

Inspecting the cylinder head

NOTE
TO MEASURE WEAR LIMITS AND COUPLING CLEARANCES, SEE THE SPECIFICATIONS CHAP-
TER.
See also

Inspecting the timing system components

- Check that the guide slider and the tensioner
slider are not worn out.
- Ensure that the camshaft control pulley chain as-
sembly and the sprocket wheel are not worn.
- If you detect wear, replace the parts or, if the
chain, sprocket wheel and pulley are worn, replace
the whole unit.
- Remove the centre screw with the washer and
the tensioner spring. Check that the one-way
mechanism is not worn.
- Check the condition of the tensioner spring.
- If examples of wear are found, replace the whole
unit.

Inspecting the valve sealings

NOTE
TO MEASURE WEAR LIMITS AND COUPLING CLEARANCES, SEE THE SPECIFICATIONS CHAP-
TER.
See also
Engine
ENG - 135