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about 33 mph
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7,2 dl.
Autolite 258
.030 inch ( on my 24 year old 5.0 horsepower Tecumseh engine )
An Autolite 258 is the recommended spark plug for a 6. 5 horsepower Tecumseh engine. A Champion RJ19LM also is recommended by the manufacturer.
1978 80 Mercury Outboard IDLE ADJUSTMENT
SAE 10w30 Synthetic oil.
exaust header aluminum flywheel bigger valves racing cam
SAE 30 for operating at or above 32 degrees.
Champion RN4C - Gap .030"
Set the spark plug gap to .030"(.762mm).