What compression for 25 HP Mercury 4-Stroke?

[dsuden]

I'm considering a boat combo that has a 25 HP Mercury 4-Stroke engine. The seller says they did a compression test and I'm thinking of asking to see the numbers on their test, but want a frame of reference so I know what "good" would look like. Can someone tell me what range of PSI is desirable on an engine of that size?

Thanks,

Dane