26 I General User Manual› 5. Undo the wheel nuts and put them to one side.Remove the lock washers from the wheel axle.› 6. Pull the rear wheel out of the dropout slits.18.3 Removing the tyre and inner tube› Unscrew the valve cap, fastening nut and the capnut (if installed) from the valve. Remove the valveinsert from Dunlop or Woods valves.› Allow the remaining air to escape from the innertube.› Place the tyre lever on the inner edge of the tyreopposite the valve.› Lever the tyre sidewall over the rim flange.› Push the second tyre lever between the rim andtyre approx. 10 cm away from the first one.› Continue levering the tyre off the rim until the tyrehas detached round the entire circumference.› Take the inner tube out of the tyre.18.4 Mending the inner tube› Pump up the inner tube.› Put the inner tube in a container filled with waterto locate the puncture.› Push the inner tube below the surface of the water.Air bubbles will be visible at the point where theinner tube is torn or perforated.› If you start losing air from the tyre on the road andcannot find the hole, simply inflate the inner tubehard. The hole will then get bigger as the air willescape with greater force and you will be able tohear more easily where it is coming from.› Allow the inner tube to dry.› Carefully roughen the inner tube in the area aroundthe puncture using the sandpaper.› Coat this area with rubber solution.› Wait for several minutes until the rubber solutionis touch dry.› Press the rubber patch firmly onto the damagedarea.› Leave the rubber patch to dry for several minutes.› 2. Pull the outer casing out from the outer casingholder of the cassette joint, and then remove theinner cable from the slit in the bracket.CJ-8S20JAPANBracketOuter casing holderSlit121 Pull out from outer casing holder2 Remove from the slit› 3. Remove the inner cable fixing bolt unit from thecassette joint pulley.CJ-8S20JAPANLOCKInner cable fixing bolt unitCassette joint pulleyIf it is difficult to pull the outer casing out from theouter casing holder of the cassette joint, insert a2 mm Allen key or # 14 spoke into the hole in thecassette joint pulley, and then turn the pulley toloosen the inner cable. Then remove the inner ca-ble fixing bolt unit from the pulley first, and afterthis remove the outer casing from the outer casingholder.CJ-8S20JAPANLOCKTurn thepulley Pulley hole2 mm Allen keyor # 14 spokeRemove the innercable fixing bolt unit Pull out fromthe outer casingholder12 3› 4. Undo the screw of the brake arm and remove it.