why does the pump become stiff and difficult to pump?
494063
I have this pump and have had this problem periodically. There are some moving parts that are lubricated at the factory. Some of that lubricant is washed away over time (especially if you have flushed anything soapy). If the pump is stiff (and maybe squeaking), then your piston o-ring needs to be lubricated with petroleum jelly. Once you do that, it will be good as new. Do a Google search for your manual for more detailed instructions.
1922991
It goes pretty high but it feels unstable when it's at it's highest. It also tries to pump lower on its own when you have it up.
1038838
I never bought it with the pump. When I do buy a product with a pump, sometimes I would have the same problem. Did you try pushing it down while turning it to the direction to open? I hope this helps. If you tried everything, then it could be the pump that is defective. I've had that happen too.
584077
Take the motor out. There is a slide switch one side that determines how hard it pumps. Make sure this is set to at least medium (in the middle) or up it to high.When I first hot mine, I had to put it on high for the first week or so and then I was able to turn it down a little.
1452872
Because it gets an air pocket inside the pump and air does not pump well by hand. These were supposed to not do that so much but I found the opposite to be true. I just change the tube when its almost out, that way there usually is no trouble with air in them. Also after you get a couple turns in with the new tube, release the T handles so it can push some air out while screwing the two pieces together, that helps a lot sometimes too
983412
It can be stiff for the first few months. Squeeze it all the way until it stops. It should release. Put some oil on it as well. That should get it going. Then keep working it to get it broken in.
810437
I get that sometimes too. Make sure the bottle is seated properly. Try pumping the handle a few times. And make sure the spout mechanism is clean.
245797
The only thing I can think of is there is air getting into the fuel system. Which would mean the connections at the fuel pump may not be tight. Does it do it every time?
187438
For me it was not easy to pump one handed maybe because my breast was heavy and I needed to stabilize with other hand so pump could suction down. Otherwise it would lose suction.
1689047
I had a plug-in pump, and it was still a pain. I think you need some kind of pump. Are you sure there wasn't one in the box? If not, contact the seller and and ask them to send it.
1243
Hi JH , Maybe you install wrong way the pump , you have to get uper the pump , if does not work , you have to intall another size ,and before you swivel the chair , you need to pump up firt.Think about keep it or retun it up to you .I bought 4 chair after 4 month all of them broken the amrest.
808504
I also had trouble at first - but suddenly the hydraulics started working. You do have to press pretty hard to make it go to the level you want.
2024468
The pump is a slight problem and should be improved. you can take top off. no problem!
1566959
Yes..your hose might be pinched also, more the likely the vaper pump is bad.
1716806
Keep your fingers crossed not so far. I had a big ceramic one before this and had the same problem. Also this one is so easy to clean that I do it frequently which I think must help to not overwork the pump.
2285154
You might have a piece of gravel or a small snail stuck inside. I would take it apart and use a cotton swab to see if anything comes out. It's one of the quietest pumps on the market.
2013436
That's a tough one. Seems I have to actually start using slight force at about 30 PSI. My tires need 50, so from 30 to 50 it gets a bit tiring. Still not hard, just a lot of pumping. Also seems the faster I pump the better it works. Slow and steady doesn't seem to move the gauge.