Cold start knob?
Here is a site where you can download the Volvo MD7A manual I did not (I'm on dial up - pity me) but I see mention of a cold-start knob. Does the key-start have a momentary glow-plug position?
Download PDF Volvo Penta MD7A Owner's Manual | PDFTown.com
Good luck to you. We boarded the dog and drove 450 miles to look at a Sabre 34 this past weekend and if the broker hadn't have done his homework I'd have slapped him up side the head. He had, but the boat itself had a few wood rot issues. It's a bad sign when teak is rotten to the point that you can stick your finger through a bulkhead or the cabin sole near the mast step. And I SO wanted this one to be the boat. :-(
Charlie P. P31-2 #80 CATNAP
To travel hopefully is a better thing than to arrive - R.L. Stevenson
I suspect that, if you should go to the end of the world, you would find somebody there going farther . . . - H.D. Thoreau