Nils Extreme HD112 Gebrauchsanleitung Seite 10

The wheels dimensions are in millimetres.
60-64mm – small wheels with low centre of gravity, help the beginners to keep stability. 70-72mm – medium
wheels, used for long distances and recreational riding.
mm – big wheels, used for fast riding, the most durable for medium experienced and experienced skaters.
76-82
The wheels are subject to wear during riding a scooter and shall be replaced from time to time. Rate of the
wheels wear depends on many factors, like: riding style, surface on which the riding is carried out, height and
weight of user, the weather, the wheels material and theirs hardness.
Wheels replacement:
1. Unscrew the wheels axis bolts using appropriate tool.
2. Remove the wheel from runner.
3. Remove the bearing with sleeve from the wheel.
4. Put the bearing with sleeve into the wheel.
5. Install the wheels on the runner and tighten the axis bolts.
The wheels fixing bolts should not be tightened too strong.
For safety reasons it is suggested to use self-locking nuts only once, as their performance level may
deteriorate with time.
When wheels do not move smoothly.
In order to make wheels to move smoothly, they must grind in. Bearings are tightly mounted and they need to
be weighted to get optimum efficiency. One should also check if screws are not too tightened up.
BEARINGS
The following bearings types can be used: 608 z – common bearing for beginners.
608 zz ABEC 1, 3, 5, 7... - very good bearing, long durability.
The bigger is the number by ABEC the better the bearing precision and the material, from which it was made.
Good bearings quality ensures fluent riding a scooter. All bearings were equipped with grease and do not require
next lubrication. Dusty, greasy and wet surfaces shall be avoided. Wet or moist bearings shall be dried with
clean cloth. The worn bearings shall be replaced.
Brakes replacement
1. Remove the wheels from runner.
2. Remove the first bearing from wheel using appropriate tool
3. Then remove the sleeve and the second bearing.
4. Clean the baring with dry cloth or replace it with new one.
5. Insert the bearing to the wheel.
6. Insert the sleeve and the second bearing.