Join Date: Sep 2007
Location: Santa Cruz, CA
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I've started my 25 hp Volvo with the hand crank several times (just to see if it would work and get the process down).
A few things to note:
It's a low compression engine, unlike modern marine diesels
It's a two cylinder and has separate decompression valves for each cylinder (key factor)
It will run on one cylinder with the second cylinder decompressed
The previous owner extended the crank so you can get a full swing going
It has a gigantic flywheel, really the thing is huge
No electric lift pump (pump installed for bleeding purposes only)
The process is to decompress both cylinders, crank to your best speed, and flip one of the compression levers, repeat until the one cylinder catches (usually 4-5 times with a physical break after the 3rd try), let it run for 1-2 minutes on the one hole before flipping the other decompression lever.
A friend had a sabb diesel years ago and we could never get it to start under hand crank. It had one decompression lever for both cylinders and I think this is what made it so hard (too hard) to do.
Last edited by Lion35; 12-13-2007 at 05:07 PM.