Water in gas a huge problem with Yamaha 2.5 hp four stroke

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Yamaha 2.5 HP Four Stroke
★★★☆☆
2.5
35.0% of users recommend this

xyMurdock463's review of Yamaha 2.5 HP Four Stroke

“Water in gas a huge problem with Yamaha 2.5 hp four stroke”

★★☆☆☆

written by xyMurdock463 on 27/08/2016

I have had this motor for three years. If you leave the vent on the gas tank open, water WILL get into the gas. When that happens it may run, but at low speed and only with the choke wide open. The only way to resolve this is to drain the gas tank, and put in water free fuel, then try to run it long enough to purge the water from the carburetor. This can take from five minutes to an hour.

It is amazing that this motor does not have an accessible carburetor drain screw. Ir is also amazing that the gas tank allows water to get in if you leave the vent open. Yes, I know I should be smart enough to close the vent, but it is very east to forget this. I have had small motors for many years for my dinghy, and never had this problem with any other brand, including Mercury and Tohatsu, basically the same motor.

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