They have to be cleaned and maintained, which will throw off settings when you disassemble the marker. They also will require fine tuning depending on temperature and atmospherics.
The engine is the entire valve assembly of the marker.
This is a picture of the new one:
next to the old one:

__________________
Proudest member of the Fightin Texas Aggie class of 08 Beat the h*** outa tu A Whoop!!!!.
If you need help, IM me. I'm around alot of the time and will answer questions happily

. *Driftcav03*
RL timmy FS ultra cheap
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Originally Posted by NYY
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