1975 9.8 hp minimum compression

[kaliona]

Found a 9.8hp 110 outboard for sale and am going to check compression before I buy it. What would be the minimum compression I would want to see before walking away from this purchase? I know I should also check lower unit lube condition too. Anything else I should be wary of with this particular year and model? Thanks for your advice.

 

[NightAngler]

Dozen outboard sites that should be able to help if you can supply the norm: SERIAL NUMBER. If an older Merc a guess would be 110-130 Dry. No more than 10 Lbs apart (two cylinder). No more than 10 Lb difference on wet comp test between the dry and wet readings.

 

[racerone]

Check for crumbling insulation on wires.----If you buy it you should install a new impeller.