Cletrac ID

[RRegan]

I am helping my neighbor install a rebuilt magneto on his Oliver Cletrac. I am trying to determine the model and year so that I can find the correct firing order.
I have located what appears to be the serial number on the right side of the motor. 3837 D 6 29 48. I tried a google search but I still can't determine model and year. What do you guys think?

 

[scootergmc]

Looks like an HG-42 to me, should be 1-2-4-3 firing order.

 

[RRegan]

Looks like an HG-42 to me, should be 1-2-4-3 firing order.

Great! Thank you!

 

[scootergmc]

Great! Thank you!

There should also be a tag on the engine somewhere, if I recall correctly. I don't remember where the tractor serial tag is. Lower dash? Frame rail?

 

[Princeton Bill]

Call Landis Zimmerman in Pennsylvania. He'll help you with the identification.