Piston 638

Jawa 350cc 638 / 639 / 640
incl. Piston , Piston rings , Piston pin , circlips.

45,50 €
Varies by model

Jawa typ 638 engine piston installation instruction:
At first is necessary to put the piston pin into freezer, on the other hand is necessary to warm the piston into aprox.+ 80 centigrade.
Before the assembly you should to lubricate the piston pin by the oil to enable you to put the pin easier.

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