Yamaha 90 TLR fuel economy

[Prophammer]

Is anyone familiar with Yamaha 90 TLR fuel economy ? Would it be about the same as an Evinrude 60 2 stroke ? Each compared at about 78% of rated hp for boat they're on. I'm thinking about buying a boat with the Yamaha 90 on it but I don't want bad fuel economy like the big OceanPro Johnsons

 

[Sea Rider]

If wanting the best fuel economy must prop right you motor to run middle to max wot rpm range factory stated as usually loaded, if with a fixed load much better. In both cases, throttle 3/4 to full throttle, once combo is on plane reduce throttle to maintain a perfect plane while the motor revs happily and smoothly..

Correct motor/transom height match, proper trim along proper deck weight distribution is also very important to achieve that wanted fuel economy.

Happy Boating

 

[robert graham]

My 1999 C90 Yamaha has about the best fuel burn at about 3500 RPM's, just on plane....but if fuel economy is a really big deal then maybe consider a 4 stroke motor....that said, I would not want to part company with my 100% reliable, lightweight, easy to maintain premix 2 stroke motor....20 years running now with never an issue or problem

 

[harringtondav]

Add to above: You want enough hp for your boat. If you don't have enough you'd likely burn more gas by constantly pushing the motor at higher throttle.

Getting a read on fuel consumption is though. We took a three day, 540 mi round trip on the upper Miss. River. Mostly cruising with hole shots leaving the L&Ds. 4 mpg. Regular boating doesn't come close. Pulling toys, short runs between plane ups. Without running different motors on the same boat under similar conditions, it's hard to compare.