90 hp four stroke rpm reduction mode

[crewa2]

Hi everyone,
I have a 2006 yamaha 90 hp four stroke. After a preventative maintenence impeller change, it is going into rpm reduced mode after about 2 minutes at high speed , no alarm sounding (the alarm horn does work). I rechecked the water pump and it appears everthing is installed correctly. Does the alarm need to sound to put the motor into rpm reduction for overheating? The block does seem slightly warmer than normal to the touch. thanks for any help.

 

[rodbolt]

Re: 90 hp four stroke rpm reduction mode

if its actually going into RPM reduction you should have an audible set as well. how are you testing the overheat alarm system.

 

[YK Boater]

Re: 90 hp four stroke rpm reduction mode

I have the same problem with my 2006 yamaha 90 4 stroke. Did you figure out what was the problem?