"93" Johnson 40hp RPM?

[sizematters]

I have a 21' pontoon with a 40hp Johnson w/tilt/trim. I normaly get 4,000. A couple of times I have seen 4,500 rpm. Is this normal? Engine runs smooth at all speeds. I have owned this one 6 mo.

 

[bktheking]

Re: "93" Johnson 40hp RPM?

http://forums.iboats.com/showthread.php?t=227311

 

[sizematters]

Re: "93" Johnson 40hp RPM?

Thanks, I guess I need to find out what prop pitch or maby start with timing adj. The man I purchhased it from had the wrong plugs in it so their may be others parts wrong or just need eng. tweeking