Check your owner's manual. It should tell you the rpm that delivers maximum
horsepower. Try to match the prop with the motor so that WOT is the rpm for
max hp.

But if you don't exactly hit the number I described above, the 4200-4600
range is acceptable.


"Dave Jones" wrote in message
...
I just re-proped my boat -- my range is supposed to be 4200-4600

is this under "best case" conditions? (flat water, no wind, light load,
trim
optimised, etc)

Or "no mater what, when you're "WOT" your engine should be between
4200-4600?

Thanks
Davie