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Having trouble removing the handlebar stem on a kulana sunfish

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Hi, you know when you undo the bolt in the middle that runs down the center of the stem well instead of undoing this all the way undo is a few turns so its raised slight then get either a rubber hammer or use a piece of wood and a normal hammer then hammer the bolt down then undo a bit more then hammer it down a bit more doing this releases the pressure on the sliding part that locks the bars this will then allow you to pull the stem out.

let me know how you get on or if you need further assistance ok

plz rate this solution as i have a whole page of unrated posts, thanks

Posted on Aug 27, 2010

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There is a black or gray rubber plug in the handlebar stem that you can pull out with your fingers. Use a #6 Allen wrench to loosen the stem wedge bolt (only loosen, do not remove!) this will enable you to lift the handlebars and stem up. When you have it at the desired height, tighten the bolt back up with the Allen wrench. Note: on the side of the stem is a "minimum insertion mark" do not raise the stem high enough to be able to read this, if you do then it is too high. The stem could break or come loose if you raise it above this mark and void any warranty.

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My steering his still and cranky I think my bearings have gone not sure how yo undo the head case


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I don't know what type of bicycle you have, or how modern it is, but the handlebar and steering head are similar on most models. Try to remove the handlebars and steering head from the bike as a unit. There is a large nut at the top of the head tube (where the steering stem goes into). Loosen this nut, and the handlebars and steering stem should pull up and out of the bearing inner races. When you completely remove that nut, the headset will come apart... (including the fork and front tire which will drop out of the headset. If your brake and shifting cables are too short to let you pull the steering stem completely out of the steering head, you'll need to remove the handlebars from the steering stem. If you are careful, the bearing set, spacers and washer will stay on the fork tube when it comes out of the bicycle frame head, so you will know which order to reassemble them in. Either tag them or lay them in the proper order. Now you can clean the bearings or replace them.
It would be a good idea to clean the bearing races at the top and bottom of the steering head too.

Once everything is cleaned and ready to reassemble, grease the bearings and the bearing races and reassemble. When you tighten the stem nut down, make sure that there is no play between the steering head and the steering stem.

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I'm answering 7 years later. I have a Schwinn Varsity 2500 Bike made probably in 2015. The Schwinn Varsity Bike is not set up the same way as a traditional bike. I loosened the center compression bolt and the two side stem clamp bolts and it came loose where I can adjust it up or down but, there's nothing to tighten the slack up below. I did some research. My original post here was to add or remove a spacer. I think you can remove a spacer to lower but, I don't think the stem is long enough to add another one. I've seen they sell an extension that you can add-on to make the handle bars higher.

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David-

To raise or lower the handlebars, first loosen the hex screw on the top of the stem. One or two turns is all that will be necessary. Next, you will need to stand in front of the bike with the front wheel between your legs to brace it, and give the handlebars a forceful twist to the left or right. This action will break the friction of the handlebar stem and the headtube (the headtube is part of the frame where the front forks and the handlebar stem meet...). With the handlebars loosened you can adjust the handlbars up or down. Keep in mind that the stem has only a specific amount of adjustment available...there is a limit to how far it can be extended up, as indicated by a line marked on the stem shaft. Once adjusted to the desired height, check that the handlebars and front fork and wheel are aligned. Tighten the screw in the top of the stem and you're done!

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On most bikes (Jaguar is a broad category, with varying details) there are two bolts in the middle of the handlebars. One bolt squeezes a clamp around the middle of the handlebars. If you loosen that one, you can tip your handlebars up or down. You can usually see this entire short bolt and it's nut (actually you would loosen the nut.) The other bolt is the one you want. On this other bolt, only the head of the bolt is visible. This is actually a long bolt that extends down into the the handlebar stem. The nut is down inside the stem, and it wedge-shaped so that it jams the stem tight inside the tube that houses it. Loosen this bolt about two turns, but do not remove it. Just give it a tap with a hammer, to free the wedging of the nut. You will now be able to pull the handle-bar stem up. It will probably still be snug, so you will have to twist it back and forth to pull it up. Pull the stem all of the way out and take a look at it. There will be a line on the stem that tells you the maximum safe height to which you can raise it. Re-insert the stem at least far enough to hide that line. If this is not high enough, you can buy a longer stem to replace it. Good luck, Al K

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1 Answer

How do you raise the handlebars


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I would like to raise the handlebars. I have loosened the stem wedge nut and the handle bars will not budge. I've tried everything almost to the point of losing the ball bearings in the steering shaft. Are...


Hey joe - Sounds like you have a classic stuck stem. Here are a couple things to try.

1 - Loosen the stem through the top bolt so the wedge is loose, but not removed. The give the top of the stem a good hit or two with a plastic mallet. That should break the bond between the steerer and the stem. If that does not work...

2 - Use liquid Wrench and drip around the stem so it seeps in-between the stem and steerer. Let sit a while then try the plastic mallet again.

sometimes you will need to work the stem back and forth a bit by using the handlebars as leverage and bracing the front wheel between your knees.

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If the stem was installed incorrectly it may be a good idea to have the bike checked over by your local bike shop to insure nothing else is installed/adjusted incorrectly.

Hope this helps. If you need any other help you can contact me at elijah@starbikesfl.com Thank you

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