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Upper Red Gas Cap Help!!


MNfan

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I bought a Upper Red Lake Cap kit and tank for my Honda generator took it Red Lake but could not get it to work, generator would run until its one gallon tank was empty and quit, gas would not transfer. Vent on big tank was open. Had concerns about swivel on end of hose at gas tank but it did not leak gas so I guess it was sealed although appeared loose. Anybody else ever have issues or have any advise?

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Mine didn't have an in line ball either, I ended up having the tank elevated above the generator a little bit and it works great. Supposedly you don't have to have it elevated but as long as it works.

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Mnfan,

You have a vacuum problem. We put balls on ours, just to fill the whip the generators have pumps on them and if you pump the ball you will get gas past the rings. We press the coupler against the male end until gas flows through the line and once we hook it up don't pump the ball. Sometimes just getting gas through the whip if you don't have the generator topped can drop the gas level enough you won't get it to draw.

Four things

1) Gas tank on generator has to be topped off.

2) Gas cap on generator has to be tight.

3) Gas cap on tank has to be loose the vent being open is not enough they frost up and restrict the flow. Once the tank level drops in the machine it won't draw.

4) Bad coupler

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Thanks Chris I tried some of that today still no go, even tryed elevating tank. I bought some parts to rig up to eliminate the hose and coupler being the problem will try that tomorrow. Then I can decide to change things and add primer bulb or take it back.

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We have the same problem with ours. We ended up putting it on the tail gate tipped on its side with the generator below. The guy in the next shack though had his generator up on a crate and the tank on the ice and it seemed to work fine.

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It is probably a bad coupler. On mine the coupler leaked gas all over unless it was above the tank. I called the manufacturer and they sent me a new hose assy with coupler. Haven't tried it yet.

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I found it was the coupler and am in the process of getting a new one. In the mean time I hooked up a temporary clear hose and with them sitting at the same level it works fine when the Econo switch is off but when I run with the Econo switch on it will not create enough vacuum to pull gas and I need to elevate tank.

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  • 1 year later...

Anybody know where you can get a replacement coupler without having to buy the whole assembly? Must have a bad o-ring as it leaks and does not seal all the time.

Andy

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  • 'we have more fun' FishingMN Creators

Like Portvilla said, If you have a leak or restriction in any of those areas it simply will not work. Only place you want air coming into the system is on the tank end.

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If the coupler has o-rings inside like I think they do, it likely has an o-ring that wasn't rated for the cold temperature. O-rings when they get that cold become rock hard and won't seal especially when they get disrupted.

Not many types of o-rings are rated lower than -20.

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  • 'we have more fun' FishingMN Creators

If they don't they are readily available with a little internet search for "yamaha generator extended run gas tank system".

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