KTM 450 EXC-R EU Repair Manual page 108

30/ASSEMBLING ENGINE
Carefully knock the piston into the cylinder using the hammer shaft.
Info
The piston tension band must press the piston rings together firmly and
must be flush with the cylinder; the piston rings should not catch or else
they will be damaged.
200088-01
Mount dowels
200090-10
Ensure that piston marking
200089-01
Cover the engine case opening with a cloth. Thread the timing chain through the
chain shaft. Mount the piston pin.
Info
For clarity, the following steps are illustrated using a disassembled piston.
200091-10
Position the piston pin retainer.
400366-10
and fit the cylinder base gasket
faces the outfeed side.
106
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