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I ordered a zefal husky pump, and it just arrived today. I am pretty excited about it. (Who doesn't get excited about pumps?)

The downside is that the gauge is reading ~50psi instead of ~0psi I wouldn't mind if it was off by 5psi or so, but this is ridiculous. Is there a way to fix it, or do I have to return it?

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Hard to say. Some gauges are adjusted by twisting the gauge body, some are supposedly "factory sealed". But I'd bet you have the former. – Daniel R Hicks Jul 26 '12 at 0:55
Like @DanielRHicks said you might be able to rotate the gauge (silly question, are there 2 hands on the gauge? maybe the one pointing to 50 is the "target" hand?) – BillyNair Jul 26 '12 at 6:06

2 Answers

up vote 5 down vote accepted

I figured out what was wrong and managed to fix it. It was a minor enough issue that I'm not going to return the pump.

zefal husky pressure gauge

As shown in the image above, the pressure gauge is protected by a plastic cover. It's pretty easy to slide this cover up the shaft of the pump and out of the way.

Once this is out of the way, the pressure gauge can be removed by unscrewing it counter-clockwise.

The problem is that the pin indicating the current pressure can slide up its axis to a point where it is going to be turned by the axis when the pressure changes, but it won't start at 0. The way I fixed it was by jiggling the guage until the indicator fell back into place where it should be. I suspect it came loose when I biked the pump across town.

Once it has been re-zeroed, you can screw the gauge back on and slide the protective cover back. Then you're done.

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At least two reviews on Amazon for this particular pump report problems with the gauge, so I think you probably need to return it for replacement.

Before you send it back, though, try DanielRHicks's suggestion to twist the gauge body. In a quick search, I wasn't able to find out whether this particular pump has an adjustable gauge, but it's worth a try.

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Thanks for looking up those reviews. Nice to know it's a standard problem. I did figure out how to fix it though. – user973810 Jul 26 '12 at 23:03
I'm glad you were able to fix it. Hopefully the pin isn't likely to get stuck again. – amcnabb Jul 26 '12 at 23:24

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