Home › Forum › Ask A Member › Minimum compression? › Re: Minimum compression?
April 19, 2015 at 2:44 pm
#14276
The type and model is what matters in an outboard’s compression readings. Not necessarily the hp or size.
Some of the 9.5’s had 65-75 lbs when new. The late 80’s 200 hp looper motors only had about 85-95 lbs when new. Some outboard designs will read well into the mid hundreds.
My Merc MK5 5hp reads about 120lbs, while my 1961 Evinrude 5.5 reads around 85lbs.