1991 yamaha 150 rpms limited to 2000

[PatrickGold]

Somebody did some repairs to my boat. Now that I have it back the engine runs great but the rpms are limited to somewhere around 2000 rpms. After the problem started, i noticed the tach and the oil pressure sensor are both off. Does anybody know of the best place to start looking for the problem (such as a bad ground wire around the tach).

 

[rodbolt]

Re: 1991 yamaha 150 rpms limited to 2000

91 150? you dont have any oil pressure indicates.
what tach are you running and have you tested the audible alarm ?

 

[JUSTINTIME]

Re: 1991 yamaha 150 rpms limited to 2000

you have oil in the tank?