Stand at the front of the bike and brace the front wheel between your feet and lower legs.Overtightening the headset can damage the headset bearings. Adjust the headset tightness, if needed. Repeat the process of tightening one quarter turn and testing until ideal tightness is achieved.ĭo not overtighten the headset.If the front wheel will not flop to the side, the headset is likely too tight. Without holding the handlebar, carefully tilt the bike slightly to one side and check if the front wheel "flops," or easily and quickly turns to the side. Check if the headset is too tight. Hold onto the top tube and lift the front wheel off the ground slightly.If you feel a knocking sensation under your hand or hear a "clunking" or rattling sound, the headset is likely too loose. At the same time, use your other hand to squeeze the left brake lever, and gently rock the bike front to back. Check if the headset is too loose. Place one hand over the spot where the top of the front fork meets the bike's headtube.Check if the headset needs to be adjusted.Repeat the process of tightening one quarter turn and testing until ideal tightness is achieved. It must be tight enough that there is no forward or backward play inside the headset, and loose enough that the handlebar and wheel can turn freely. Tighten the top cap bolt one quarter turn at a time and then test for ideal tightness.Tighten the stem faceplate bolts evenly, tightening each bolt one quarter turn and alternating bolts in an X pattern, until all four bolts are torqued to 10 Nm.Adjust the handlebar, matching the grip and brake lever alignment to your photo from earlier.Tighten the four stem faceplate bolts evenly and partway. Center and secure the handlebar and place the stem faceplate on the handlebar and stem.Place the handlebar into position on the stem. Trace the front brake cable directly upward from the front brake caliper to the left handlebar, and ensure the cables and wires are not twisted.Ensure a split washer is on the end of each of the four bolts, apply a small amount of assembly grease to the bolt threads, and place them and the faceplate near the handlebar stem. Locate the handlebar stem faceplate and hardware.Install the top cap and top cap bolt and use a 5 mm Allen wrench to tighten partway until you feel some resistance.Place the new stem into position onto the steerer tube. Loosen the pre-installed stem clamp bolts if needed.Use a 5 mm Allen wrench to loosen or remove the stem clamp bolts and lift the stem off of the steerer tube. Recycle or dispose of the old stem according to local rules.Ĭontinue to the next section to install the new stem.Use a 5 mm Allen wrench to remove the bolt, and remove the top cap. Remove the top cap bolt cover, bolt, and top cap. Carefully remove the top cap bolt cover on the stem.Carefully set the handlebar on the ground.Recycle or dispose of the faceplate and bolts according to local rules. Remove the bolts, split washers, and the faceplate. Use a 5 mm Allen wrench to remove the four bolts from the handlebar stem faceplate. Loosen each bolt evenly about one half turn at a time and alternate between bolts, moving in an X pattern.Remove the display and remote clamps from the handlebar and set aside for reinstallation.Set these bolts aside for reinstallation. Use a 3 mm Allen wrench to remove the display clamp bolts and the remote clamp bolt.Unplug the display connector by untwisting the metal portion fully and then pulling directly apart. Locate the display connector and snip a zip tie if needed.Remove the LCD display and remote to access the stem faceplate bolts.Take a photo of the handlebar alignment and brake lever angle to help with reinstallation.Get the bike ready for maintenance. Turn off the bike, remove the battery, and press and hold MODE to discharge remaining power.
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