rpm question

[GOVOLS50]

i have a yamaha 50 2-stroke lrt. The motor runs fine top speed is 36mph/specs say top speed is around 32. but the rpm gauge read 2800 max. it idles at the correct rpm. the prop is the correct size according to yamaha. boat is brand new. do i just have a bad tach?

 

[BadBass]

I had the same problem out of my 50 yamie and carried it back to the dealer. Wasn't anything wrong with the motor just an error in the tach.

 

[flip1up]

36mph out of a 50 hp, its the tach. You wouldnt get that at 2800 rpms.