30/ASSEMBLING THE ENGINE 91
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– Slide piston pin into the connecting rod by hand.
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– Position the piston pin retainer in the 6 o'clock or 12 o'clock position.
– Ensure that the piston pin retainer is correctly seated on both sides.
– Remove the cloth.
17.25Installing the cylinder
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– Position the new cylinder base gasket.
Info
If neither the piston, cylinder, crankshaft or engine case need to be
changed, the same gasket thickness can be used as before.
– Oil the cylinder and piston.
– Position the piston ring.
The anti-rotation lock engages in piston ring end .
– Slide the cylinder over the piston.
– Carefully push the cylinder down and ensure that the dowel pins are properly
engaged.
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– Mount nuts on both sides and tighten in a crisscross pattern.
Guideline
Nuts, cylinder base M8 20 Nm
(14.8 lbf ft)
– Check the X-distance. ( p. 91)
17.26Checking the X-distance
Info
The X-distance is the distance defined for the piston protrusion, when the cylinder is clamped down and the piston is at top
dead center.
The X-distance must be checked very carefully. If the X-distance is too large, the compression decreases and the engine loses
power. If the X-distance is too small, the engine knocks and overheats.
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– Apply special tool to the cylinder.
Adjustment gauge (45129006000) ( p. 142)
– Position the piston at top dead center.
– Check the X-distance.
Info
The piston should not raise the gauge off of the cylinder.
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