Yamaha 115 low rpms low power

[Billnva]

I have a 2005 Yamaha 115 hp (68v) four stroke/ fuel injection, experiencing low rpm (max 4000) and low power (less than 30 mph). I changed fuel filter and spark plugs, still low rpms and power

 

[99yam40]

did it ever run correcty

 

[robert graham]

Possibly a plugged injector screen on one of the injectors.....causing motor to run on 3 cylinders.....have injectors/screens ever been cleaned?....