The side clearance on the piston rings in the Vanguard engine are as follows
1st and 2nd ring are .0018-.003. The oil ring is .0045-.006. The ring end gap is .008-.018 on all 3 rings. This info was taken out of my B&S Vanguard service manual. Any other info you need just give me a yell.
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1641, 1541, 682 with 18hp command engine and hydraulics from a 782. 1872 with a power angle blade.
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