Copyright © 2001 by Lambretta Club of Scotland. All rights reserved.

Fit each side of the old rim to the new tyre making sure that the air valve sticks through correctly. I always fill the tube just slightly so that it takes shape and makes pinching it less likely when the rims go together. To be sure, press both rims together and loosely fit the 4 nuts. As you tighten the nuts you can push the inner tube down so that it is not pinched with a flathead screwdriver - obviously don't push it hard enough to cause any damage.

Once the wheel is pumped up (to about 18 PSI for the front) it can be refitted to the hub with the four nuts and lock washers. When the hub is refitted it is imperative that the stationary hub side is fitted correctly. On the right hand side fork link there is a large pin that must fit into a slot in the hub. This side of the hub must stay stationary in order for the brakes to function. See the photo below that shows the pin and the slot in the right hand side of the wheel hub.

The final step is to fit the washers and tighten the two axle nuts on both sides of the threaded axle.