Stus-List Hydraulic backstay adjuster rebuild?

Shawn Wright shawngwright at
Tue May 14 18:37:57 EDT 2019

Hello all,

It appears that the backstay adjuster is in need of a rebuild. Although the
gauge reads to 2500psi, it struggles to reach 500, and slowly bleeds down.
It is marked Hydra Tech Marine, Vancouver, BC. (which appears to be out of
business), and looks like this:

Is this something I can rebuild myself by obtaining seals and o-rings, or
should take it to a hydraulic shop?

Also, what range should it be set to on a '74 35, with twin


Shawn Wright
shawngwright at
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