between 50 and 57
Spark Plug Gap is .035, Torque then to 20 foot pounds.
.20-.24
== == standard spark plug: DR8ES-L Spark plug gap: 0.6 -0.7 mm (0.023 - 0.028 in) tighthening torque: 20 Nm (14.5 ft-lb) 0.6-0.7 is your gap settings.
The 1.8 20 valve Turbo gap is 0.032
The recommended plug gap for the 1972 model, 20 hp Johnson outboard is .030 in.
0.030
Gap is .20 or .30 depending on fuel mix.
I have a Bolens Model BL 150, 31cc and my Operator's Manual calls for a spark plug gap of 0.020 in. (0.5 mm).
.030
.20
manual calls for .20-.24
o.20