military369
New member
Hello and thank you up front for any advise I receive.
My father has Twin Yamaha 150 four strokes that are running hotter than they should. The temp runs right in the middle, half way mark at 3,000 rpm. Once you go to 4,000 rpm the temp goes to 3/4 and jumps a 1/4 in the guage. Both guages are reading the same temps. Both motors have been fully serviced, new impellers, plugs, thermostats, complete job, big job. I believe the two guys performing the work were there for 8 hours doing the full maintainance. The motors have right around 130 hours on them. Also, this problem did this same thing before the maintainance.
Any help and advise would be greatful.
My father has Twin Yamaha 150 four strokes that are running hotter than they should. The temp runs right in the middle, half way mark at 3,000 rpm. Once you go to 4,000 rpm the temp goes to 3/4 and jumps a 1/4 in the guage. Both guages are reading the same temps. Both motors have been fully serviced, new impellers, plugs, thermostats, complete job, big job. I believe the two guys performing the work were there for 8 hours doing the full maintainance. The motors have right around 130 hours on them. Also, this problem did this same thing before the maintainance.
Any help and advise would be greatful.