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nydoug
06-21-2009, 11:09 AM
"Hi, just out of curiousity does anyone know if the 1988 Force 125 HP and the Force 85 HP had the same size Cowl (cover)? I just bought a used 17' boat with a 88 125 HP Force it has little power. I was wondering if maybe it really wasn't a 125 but an 85 HP? Compression is 117 to 120 in all four Cyl and all have spark.

Thanx for any guidance
Doug"

maurod
06-21-2009, 12:00 PM
"Doug,

The 85 hp has 3 cylinders.That should put you mind at rest. Compression seems even and adequate. Alot of things can keep speed down,start investigating.

Mauro"

nydoug
06-21-2009, 02:36 PM
"Thanx a lot Mauro, I'll start tinkering."

maurod
06-21-2009, 03:36 PM
"Does the boat have a tachometer, if so whats WOT? If the pitch is wrong it can affect speed, RPM at WOT should be 4500-5500.

Also, Is the boat in salt water, is it bottom painted? Are there tons of gear.What condition is the prop? all this can affect speed.Good luck

Mauro"

outboard_doctor
06-23-2009, 05:22 AM
The 125hp is a bit of a dissapointment in the power dept!!!! A good 90hp ie Johnson or a merc is quicker sorry