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Barrels – Inspection
1. Measure the diameter of each cylinder bore using an internal micrometer or similar
accurate measuring equipment.
2. Measure the inside diameter 10 mm from the top of the bore as shown below.
Cylinder Bore Diameter Measurement Points
3. If the reading is outside the specified limits, replace the barrel and pistons as an
assembly.
4. When measuring the cylinder barrels internal diameter always refer to the
specification table (see Pistons).
Barrels – Installation
Make sure the motorcycle is stabilised and adequately supported.
A correctly supported motorcycle will help prevent it from falling.
An unstable motorcycle may fall, causing injury to the operator or damage to the
motorcycle.