ZONGSHEN ZS250GY-3 Service Manual page 25

[3]Check the abrasion of small drive chain and
replace the chain assembly if necessary.
[4]Dismantle fixed bolt of chain box,and remove
the chain box.
[5]Dismantle the spring clamp of drive chain.
Remove tie-in of drive chain and drive chain.Check
the abrasion of the tie-in of drive chain and replace
it if necessary.
CAUTION
When installing,the open end of spring clamp
of chain tie-in should be opposite to the running
direction of chain.
[6]Check the abrasion and distortion of drive chain.
Wholly replace the big and small sprocket wheel
and drive chain if necessary.
Small drive
sprocket wheel
chain box
Chain tie-in
drive chain
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