Triumph Rocket 3 GT 2021 - Page 355

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6. Fit the valve collets ensuring correct collet location in the spring cap and valve as the
spring compressor is released.
Always check for correct location of the valve collets during and after assembly. If not
fitted correctly, the collets may become dislodged when the engine is running
allowing the valves to contact the pistons. Any such valve to piston contact will cause
severe engine damage.