motor problems

Hey guys, I was wondering if anyone’s ever ran into this problem with a Yamaha 40/30 jet before. The Motor has been running great for some time now, just ran into this issue the other day. It cranks great and idles fine but when you go into full throttle the motor shakes violently and bogs down...

I bought a brand new hog island skiff last year, but was only now able to get it out on the water. Having issues with not being able to get on plane and motor feels underpowered... Getting to about 15MPH in the Hog with a Yamaha 40/30 Jet, installed properly so that it rides high like I was...

I have a 86’ Mercury 20hp tiller. Was having a week pee stream so decided it probably needed an impeller. Went ahead and changed the whole water pump. The motor still doesn’t pee super strong and the water is hot. Just after idling for a few minuets I was getting 220 degree temperatures with...