Basicly anything over 100 psi would be acceptable. Also, there should be no more than 10-15 psi variance between cylinder readings.
between 90-120
130lbs
50 to 1 ratio
The 1991 model, 90 hp Force outboard requires a 50-1 ratio. This is roughly one pint of 2 cycle oil, to six gallons of fuel.
Here are a couple.The compression force of that machine is measured in tons.I was amazed at the compression force I felt.
the force is compression
briggs doesn't offer compression ratings for their engines. I will usually pull it 3 to 5 times and look for 90 to 120. anything less is a problem and if it doesn't hold compression there is a problem
I have a 2005 and compression should be close to 120 psi. Normally a good engine will have compression between 115 and 130 psi but a leak down test should be performed also to know the full condition of a cylinder.
The listed dry weight for a 1993 model, 90 hp Force outboard is 249 lbs.
Low compression, 2bbl carb = 230 hp High compression, 4bbl carb = 290 hp 1964 442 330 engine = 310 hp
50
Yes.They are force.