Squish Check - SHERCO 125 Workshop Manual

ENGINE ASSEMBLING
7
• Place inside
• Place the two dowel pins
• Fit the combustion chamber
w
.
❱❘ Squish check
The squish check is carried out measuring the distance between the piston crown , at Top
•
Dead Center, and the combustion chamber.
As a reference, fit a 0,5mm thick base gasket.
•
Place a bit of tin wire on the piston crown, parallel to the wrist pin.
•
Fit the cylinder head, tighten the screws.
•
Rotate the crankshaft to make sure the piston moves past Top Dead Centre
•
Remove the combustion chamber, and measure the tin wire thickness.
•
• Fit the cylinder head cover and its 6 screws
with new copper washers, cross-tighten the
screws at a 10Nm torque.
47
8
and outside O-rings.
9
q
and its O-ring
125cc
Min. Squish 0.9 mm
Max. Squish 1.00 mm
250cc
1.25 mm
1.35 mm
e
,
ST SERIES
300cc
1.25 mm
1.35mm