Spark Plug

[island hunter]

I have a Viking 3.5hp Model 34021 serial 2281.I was wondering what is the proper plug and gap for this motor.

 

[cougar1985]

Re: Spark Plug

champion spark plug ,rh12 or h12 gapped .030, 1965-76

 

[island hunter]

Re: Spark Plug

Thanks.