Looking to splash my merc 850..1975 vintage..no not an xs but still an oldie but a goodie..my manual states 27 degrees for max timing...would backing off the timing be prubent on this motor??
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Merc 850 timing
Looking to splash my merc 850..1975 vintage..no not an xs but still an oldie but a goodie..my manual states 27 degrees for max timing...would backing off the timing be prubent on this motor??
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