PUMPS
• Using the SWITHCBLADE pump nozzle(both 5-in-1 and 4-in-1):

EXPLAINING THE INTERNAL SWITCHING MECHANISM
To get best results from your SWITCHBLADE equipped pump, it is helpful to understand how the automatic switching mechanism works. The internal switch (changing the air from flowing to the hole for bike tires to the needle for sport balls) senses back pressure from the object you are trying to inflate. When you insert the needle into the ball, (or put the nozzle on a bike tire valve) the back pressure inside the ball (or tire) flows into the nozzle and pushes the switching mechanism to shut off the outlet you are not using.

PROBLEM: Air is escaping through the wrong outlet

NOTE: In the case of a new pump/nozzle OR a pump/nozzle that has not been used for a long time, it is possible excess lubricant used in the manufacturing process and/or dirt have caused the switch to stick in place.
Don NOT attempt to block the outlet you are not using. Common sense tells you to do this, but in fact it will only create back pressure in the channel you do not want to use and actually further block air from being directed to the correct outlet.

FIRST SOLUTION
After making sure your nozzle is firmly attached to the tire valve (or in the case of a sport ball, the needle is firmly and completely inserted into the ball) give three to five quick firm strokes of the pump. Doing this should create enough back pressure in the nozzle to free up the mechanism and activate the switch.

SECOND SOLUTION
In certain circumstances, the two most common of which are a brand new bicycle inner tube (note: many new inner tubes actually have NEGATIVE pressure inside, as they have had the air sucked out of them at the factory to make it easier to put the tube inside the packaging) or a totally flat sport ball, rapid firm pumping may not be enough to activate the switch. In these cases do the following:

SPORT BALL:
Insert needle is firmly and completely into the ball.
Give the ball a hard squeeze (this will force air up the needle and trigger the internal switch).

BIKE TIRE:
In the case of a new inner tube, open the cap and valve fully. Tap/depress the valve to open a free flow or air and to release the negative air pressure (vacumn) inside the tube. Now engage the nozzle and pump normally.

CONCLUSION:
If #1 or #2 above solves the problem, the cause was most likely the overflow of the lube or dirt in the mechanism and once you have cleared the switch, it should not happen again.

WARRANTY
If the above actions fail to resolve the issue, your pump/nozzle and your pump/nozzle is still under warranty (one year from time of purchase) bring your pump/nozzle and your purchase receipt to a YPK retailer to determine if your pump/nozzle is defective and covered by our replacement policy.

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