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The recommended gap is .025"
http://www.oldmercs.com/models.html
NO! definitely a 2 stroke and requires oil in gas.
it really depends on its condition. what do you have?
Mark Tatge was born in 1955.
Mark Jaccard was born in 1955.
Mark Dietlein was born in 1955.
Mark Merrill was born in 1955.
Mark Abley was born in 1955.
Mark Roesler was born in 1955.
Mark Roosevelt was born in 1955.
Mark A. Landis was born in 1955.