Question about Topeak Mini Master Blaster

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How do I switch the Topeak mini master blaster pump for presta valve operation? It looks like there's a plastic washer that needs to be reversed but it's impossible to remove.

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I've just bought one, they seem pants, un screw the cap, theres a remove the rubber part, tap out the green bit, then just switch it round.

but i've tried pumping my tyre but nothing seems to happen

Posted on Oct 04, 2010

  • mel8442 Oct 11, 2010

    I had the same problem. Any suggestions?



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1 Answer

Topeak mini G dual pump

You are most likely using the pump set up to work with a Schrader valve when you should be using it with the internals set up to work with a Presta valve. This video will help you identify the valve type and explain how to change the internals of the pump:
This video will explain how to change a flat:

I hope this helps, Eddie O - Topeak Inc

Nov 15, 2012 | Topeak Mini Master Blaster

1 Answer

How do you use it? there's no pin or anything. Am

If by no pin on the inside and it won't work with the short stubby valve that just means it's ment for a presta valve. Return the pump and get one that works with a schrader valve.

Jul 14, 2011 | Topeak Mini Master Blaster

1 Answer

Hi there i boufht this pump and have found that i have two different valves on my bike one is a normal one and one is a schraieder, how do i chnage the pump attachment so i can pump up the schraieder one?

You can buy an inexpensive adapter to fit on either valve stem to convert it from Presta to Schrader or from Schrader to Presta - whichever is better suited to your pump and/or your other bikes. If you want to go with Schrader as your standard (the fatter one) you can replace the tube on your wheel that has the Presta valve - but you have to enlarge the hole in the rim. If you do that be sure to make the edge of the enlarged hole nice and smooth with sandpaper. If you want to standardize on Presta, you will need a small bushing to make the existing hole in the rim smaller. I hope you found this helpful. Good luck, Al K

Jun 21, 2011 | Topeak Mini Master Blaster

1 Answer

How do i set up the pump to inflate a presta valve tyre?

If it is not a Presta pump, then you will need an adapter. These adapters usually run for less than a dollar and are easy to use. You can just screw it onto the Presta valve and then it converts it to a Schrader. You can see what they look like HERE. They should be available at any bicycle, camping or hiking store. Good luck and be safe riding! (Helmets are your friend)

Mar 04, 2011 | Topeak Peak Master Blaster Dx Pump

1 Answer

We have the valves that stick up and I was sold the Master that the wrong pump?

The pump will work with both types of common bicycle valve.

Yours is the presta, the one like on a car is a schaeder valve.

To inflate or deflate a presta valve you must first "open" the valve by unscrewing the little tip. once it is loose, give it a couple taps to make sure it is not stuck and try pumping again.

If it still does not work, then you may need to reconfigure the internal washer inside the pump, if yoiu don't have the instructions that came with the pump, then I would suggest taking it back to where you puchased it, the shop or any shop for that matter willl be happy to give you a quick demonstration and make sure the pump is configured properly. The pump will work with your valve.

Dec 26, 2010 | Topeak Mini Master Blaster

1 Answer

  1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.

  2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
  3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
  4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
  5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.
Read more: How to Inflate a Bicycle Tire With a Presta Valve '

Nov 02, 2010 | Topeak Mini Master Blaster

1 Answer

Cannot get my brand new Topeak Joe Blow Sport pump to lock onto a Presta valve. I have locked the lever down, but it does not hold the valve. It is as if the Presta valve is too small for the pump...

They should be designed to fit both styles of valve, but you need to reverse the seal.
you should be able to unscrew the end, remove the sealing rubber and a plastic fitting that pushes on the valve, replace them the opposite way around ,and they will fit the presta.

Aug 22, 2010 | Topeak Joe Blow Sport Pump

1 Answer

I have a topeak master blaster pump, and it is set up for schrader valves. I cannot fathom how to change it to a presta adaptor? There are no parts that came with it and I cannot see how the adaptor is...

remove the cap, pull the rubber bit out, tap out the green bit, then switch it round, but this is where your problems start, as it does not seem to pump the tyer up.

Aug 09, 2010 | Topeak Mini Master Blaster

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