Diesel Fifty pony plugs

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maximan

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I am in need of spark plugs for the starting engine of my diesel fifty. Does anyone have a good current brand and number for these? Also, does the fifty share the same rails and sprockets as the rd7? Thanks

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Sat, Apr 7, 2007 7:44 AM

Old Magnet

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The NGK -A6 plug is a good replacement for all the old 18mm pony motor spark plugs.
I don't have direct interchange information for the "50" and "RD7" but I can tell you they used the same pitch (8 in.) sprocket and had the same rail height (4-3/8 in.). I suspect they are the same but I can't tell you for sure😉 😉

Correction....that's 8 in. pitch not the 8-1/2in I stated.

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Sat, Apr 7, 2007 8:23 AM

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