I have a 1979 Evinrude 35 Hp Model 35902A and it has Champion L77SC4 Plugs in it and it runs great. Hope this helps
The 1979 model Johnson 9.9hp uses a Champion L77-JC4 spark plug.
The 1979 Suzuki 750 spark plug gap is .018. Most spark plugs will come pre-gapped from the spark plug manufacturer.
NGK B8ES
The 1979 Honda motorcycle spark plug gap is .013. Most spark plugs will come pre-gapped from the spark plug manufacturer.
either its running to lean or you have a bad exhaust valuve
I recommend you install AC/Delco spark plugs. The exact model plug depends on your exact application. Any auto parts store can provide the correct model plug.
19 degrees
The 1979 model, 25 hp Evinrude requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
hi its a 1979 euro model
1.1 mm Do not use Bosch plugs. Anything but. Bosch do not work well in Japanese designs of engines
ratio 50:1
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