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Evinrude xp175 wonbt reach maximum speed

B

brad garrett

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ok just had the power head red

ok just had the power head reduild new pistons rings bearings etc.and new power pack cleared the break in period and maybe 15 hours after. when I get it going and ease it to full throttle my gps only reads 40.9!!!! ?? The 175 is on a 18 ft 10 in nitro deep v I should be near sixty's right? Think the throttle isnt set right? My tack doesnt work so i cant get the rpm but about 3/4 down on the hot foot and all the way down it almost seems the same what may be causing this? Its got 6 months waranty but not familier with outboards and i need to know if im getting screewed with thank you for your time
 
I would get a working tach fir

I would get a working tach first off and then you can verify if 3/4 and full throttle are the same RPMs.

What year motor would help as well.
 
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