Re: 1940 Johnson HA-15 W/Video

[marvk]

I checked the compression today, and I I have 70-72psi on both cylinders. I think it should be idling better.

To anyone who has one one of these, or similar, are the main and idle jets this sensitive? Especially the idle screw. It seems every time I advance the throttle, I have to re adjust the idle screw. Manual says to adjust the idle with the main closed, and it should then be set for low through high RPMs.

Also, on the cooling, there are the spray holes, that spray forward against the transom. That seems to be working fine, and I don’t seem to be overheating anymore. But there is also a relief hole on the port side, 90deg off of the spray holes. Is this an exhaust relief hole, or is there supposed to be cooling water exiting this hole as well?

Thanks,