the gap is 0.024
BPR7ES @ .028 according to the NGK site.
The correct ratio for 1991 85hp Yamaha is 1:50. 1 liter of oil for 50 liters of fuel.
champin L76V
The dry weight of a 1991 model, 130 hp Yamaha outboard is 357lbs.
According to my owner's manual (1991 non-turbo): 1.0-1.1mm
The 1991 Mercury Marquis spark plug gap is .034. Most spark plugs will be pre-gapped by the spark plug manufacturer.
how do you change the spark plugs on a 1991 q 45 infiniti
1991
The spark control is also a REV limiter, you could replace it and chance blowing up if you like. It still wont go over 50
1991
I like cats.....
140 pounds