Nissan ns5a2 checking compression is there a way to bypass decompression

want to check engine compression.
I understand the engine has something that reduces compression while starting.
Is there a way to bypass that, compression is reading 30 LBs now.

Thanks

Nope. The decompression device is a centrifical weight on the cam. Under say 1000 RPM, it decompresses.
Is the motor running OK? What is the wet compression?

Hi Paul,

By wet do you mean put a little oil in cylinder?
Not running at this time, I bought it used and I had it running but it was smoking like a 2 stroke and leaving a lot of oil on the water.
I put it up few a years ago and am just now trying to get it running.
Looking back the oil may have been a little high and I may have set it down on the wrong side.
This was my first 4 stroke and didn't know how important those 2 things were.
I am just trying to see if rings might be the cause of the oil burning before it try starting again.

Thanks for your help

Hi Paul,
wet was 35lbs

So the rings are leaky for sure. A new power head is almost $1000. Having the current block honed at a machine shop and new rings may be the economical way to go.

not the awnser I was hoping for, but guess it was what i was expecting.

Thank you for your time Paul.