JAWA B, Specification And Operator'S Manual

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attention is called to the fact that oil, petrol and strong sunshine are harmful to
the tyres. Examine the tyres from time to time and remove any foreign matter,
such as sharp gravel, glass etc., struck in the tyre pattern.
Check the tyre valves for leakage by unscrewing the valve cap and moistening the
valve. Should any bubbles appear, the valve is leaky. In such case tighten the
valve core (the slotted valve cap will serve for the purpose). Should the valve still
leak, screw out the valve core and replace it by a new one. It is advisable to keep
a couple of valve cores as spares. A punctured tube has to be patched. The tyre
cover will have to be removed in the following manner:
Unscrew the valve core and deflate the tube completely. Unscrew the nut securing
the valve to the rim. Lay the wheel in a horizontal position and press the tyre edge
well into the rim base at a point
diametrally opposed
to the valve. Using the tyre
levers slip the cover edge over the rim edge Take care not to pinch the tube and
thus damage it. Having slipped all the cover circumference over the rim edge press
the valve completely out of the rim base and remove the tube. Having screwed in
the valve core and inflated the tube partially the punctured spot will be best
located by plunging tube into water. Mark the punctured spot (e.g. with a copying
pencil), dry the tube and repair as follows:
Slightly rub the punctured spot with a piece of sand-paper. Smear the rubbed
spot with rubber solution. Allow the solution to dry and only then place the patch
after first removing its protective coating. Press the patch well to the tube,
especially at its edges. Powder the patch spot with French chalk (talcum powder)
to prevent the tube sticking to the inner walls of the cover at the spots where the
solution -was smeared. Examine the outer cover carefully and remove foreign
materials, if any.
Fitting the tyre
Inflate the tube partially, insert it into the cover. one edge of which has remained
in the rim, push the valve through