johnson 1929 model K45 7.15hp

[Anonymous]

Motor has a compression relief lever – I know it how it works.

it also has a relief lever for the exhaust – do I start motor with this closed or open and then run it open?

[george-emmanuel]

Are you following the other K-45 post? The compression lever opens an exhaust valve to relieve cranking pressure on one (starboard) cylinder. It also closes the intake port so you crank the motor on one cylinder making it easier to pull over. Personally, I don’t use the compression release on my PR, PO, S-45 and V-45. I find them easy to pull over.

George

[10717]

Chuck–I have a K45 that is missing the exhaust relief lever on the handle and relief valve on the exhaust tube. Would you mind posting some close up pictures of these parts? I am particularly interested in what the valve assembly on the exhaust tube looks like. Thanks!

[Tom]

Here are some photos of the actuator lever. This one was machined from parts cast by Art DeKalb.

T

[10717]

Thanks–I’ve recently ordered one of these from Art–yours certainly turned out well! Does your engine still have the original valve? All I have is the cover plate. Appreciate any tips you have on replacing those parts.

[Tom]

Sorry, I’ve passed that motor on to a new owner. IIRC, there was a cone shaped piece that was spring loaded to close against the opening. I think Art’s parts come with a machining guide. Let me know if you need information regarding the sequence I used.

T

[Goman]

This is what I came up with.

[10717]

Thanks!!!

[Author]

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