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Discussion Starter · #1 ·
just got my 73 nordic running it has a 339 rotax not original and im fouling plugs im running 50 to 1 ittl run great for a couple of laps then one of the flugsll foul alsoit has a reverse gear what kinda lube do i use fer it
 

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in the chaincase, use your favorite 90wt oil. In my 399 Nordic I use 20:1 with no problems. Most likely your jetting is too rich. Start with the low speed at 1 turn, and high speed at 3/4. adjust acordingly. For plugs, I use NGK B8HS.
 

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Discussion Starter · #6 ·
[quote name='superjuice' date='Feb 6 2006, 11:19 PM']
what make of plugs r u useing??? champions foul easy... I use ngk excusivly
[snapback]702120[/snapback]​
i use nkg
 
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