I General User Manual 1911 HeadsetHeadsetThe headset is the bearing for the bike fork in the frame. Ifthe headset has been properly adjusted, it will turn easily.In doing so, no play should be evident.The headset is subject to a large amount of stress due toimpacts with the road surface. This can cause it to comeloose or affect its setting. Have the play and ease of move-ment of the headset checked regularly by your specialistcycle shop (for inspection intervals see ➠ Chapter 28.1"Inspection schedule").Checking the headsetIf you do not adjust the headset properly or tightenit too tightly, this could cause breakages. This shouldtherefore always be carried out by a professional bikeworkshop.If you ride with the headset loose, this could damagethe bearing shells or fork.12 ForkThe front wheel is held in place by the bike fork. The bikefork consists of two fork blades, the fork crown and steer-ing tube.Carbon fork Suspension forkThe suspension fork is a feature of most mountain bikes,trekking bikes and city bikes. They can be adjusted indifferent ways and provide a greater degree of riding com-fort.For information on the function, maintenance and care ofsuspension elements, refer to ➠ Chapter 13 "Suspensionframe and suspension elements". Specific information onyour suspension fork is provided in the manufacturer'soperating instructions which you can find on the CD or themanufacturer's website.Never ride with a damaged bike fork. Do not attemptto repair a defective bike fork. This can lead to seriousaccidents. If you notice that the bike fork is warped orotherwise damaged, replace it before using the bikeagain.Avoid sudden changes in ground level and riding offhigh kerb stones. This can damage the fork and leadto serious accidents.Check regularly that the screws on the bike fork aresecurely fastened. If screws are allowed to comeloose, this can cause serious accidents.