pitch

[johnsonman27]

got a 1999 johnson 30 H.P. gonna put it on a 14' stumpknocker... how do i know what diameter and pitch to get the prop?

 

[Vic.S]

Re: pitch

The parts list lists the following:

0387320 11 1/4 X 7 AL
0391064 10 X 17 AL
0175190 10 1/2 X 11 AL
0175191 10 X 13 AL (Standard.)
0386317 11 X 9 AL
0390728 10 1/2 X 11 SST
0390727 11 X 9 SST
0390380 10 X 15 AL
0390729 10 X 13 SST
0390730 10 X 15 SST
0390731 10 X 17 SST

But really you should match the prop to the boat and use. Generally smaller piches for slowspeeds coarse piches for high speeds but the standard one should be the best alround compromise