BRP-Rotax
REPAIR MANUAL
INSPECTION OF THE PISTON DIAMETER
Instructions
1. Measure the piston diameter with a micrometer (1). Conditions of measurement: room tem-
perature = 20 °C, measuring point 20 mm from the lower edge of the piston, perpendicular to
the piston pin axis.
2. Determine the piston to cylinder clearance. The wear limit is 0.08 mm.
NNOOTTEE
The piston clearance of a new piston/cylinder pairing should be 0.04 - 0.05 mm.
Figure 1.12: Piston diameter
1 Micrometer
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Effectivity: 125 MAX evo, Junior MAX
evo, Mini MAX evo, Micro MAX evo
Edition - February 01 2018 /Rev. 0
Chapter 4
Page 13
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