30/ENGINE - WORK ON INDIVIDUAL PARTS 83
16.14Checking the piston ring end gap
400542-10
– Remove the piston ring from the piston.
– Place the piston ring in the cylinder and align it with the piston.
Guideline
Under the upper edge of the cylinder 10 mm (0.39 in)
– Measure the end gap using a feeler gauge.
Guideline
Piston ring end gap
Piston ring ≤ 0.60 mm (≤ 0.0236 in)
» If the end gap is more than the specified value:
– Check/measure the cylinder. ( p. 81)
» If the cylinder wear is within the tolerance range:
– Change the piston ring.
16.15Checking reed valve housing, diaphragm and intake flange
300512-10
– Check reed valve housing for damage and wear.
» If there is damage or wear:
– Change the reed valve housing.
– Check the diaphragm for damage and wear.
» If there is damage or wear:
– Change the diaphragm.
– Check intake flange for damage and wear.
» If there is damage or wear:
– Change the intake flange.
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