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Adjusting the height of the Promax stem

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Hey there,

 

I have the Zephyr-B (old version), and the handle bars are too high. Is it possible to adjust the stem lower into the bike frame?

 

How would I go about making this adjustment? I can't seem to dismantle the stem portion of the bike. I can see that I can lift up the "neco" cone which seems to hide something...

 

Any help would be great!

Hello Hubear,

 

Your Zephyr-B has a Promax adjustable stem. It is attached to the fork's steerer tube with a wedge nut.

The range of adjustment in height is about 4 inches.

 

To adjust the height, first loosen the wedge nut.

To loosen the wedge nut:

 

1) Slide down the safety latch (arrow), lift up the locking arm (yellow sticker), lower the handlebars to expose the stem bolt.

2) Use a long handle 6mm allen key, loosen the bolt, 3 turns anti-clockwise.

3) Push the stem into the steerer tube to where you want, tighten the wedge nut really well.

 

680034458_167.jpg

 

The wedge nut is similar to this:

 

http://i.ebayimg.com/images/a/(KGrHqMOKkUE1stlLZTrBNlb4Y6SYg~~/s-l300.jpg

  • Author
That worked perfectly!!! - I managed to adjust the stem to the lowest position and now I ride with a lot more control. Many many thanks!

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