CSC SG250 - Page 57

SG250 Owner’s and Service Manual
www.CSCMotorcycles.com
57
Push the valve stem back into the rim so that it is no longer passes through the rim. Remembering
where the puncture occurred on the tire (if you were able to identify the puncture location), pull the
tube out of the tire (you’ll be pulling it out between the tire and the rim on the side where you
separated the tire from the rim).
Carefully inspect the tube in the area adjacent to the tire puncture location and inspect for the source of
the leak. If you find it and if it is small (they almost always are), you can most likely patch it as a
temporary fix. If the tear is more extensive, you should replace the tube.
If you can’t find the leak, partially inflate the tube and listen for hissing. You may have to put the
partially inflated tube near your ear and rotate it until you find the leak. If you are near water, you can
immerse the tube and look for bubbles to locate the leak. If you hear it but can’t see it, you can rub spit
around the general area and look for the leak.
Before you reinstall the tube (either one you’ve patched or a new one), reach in and gingerly feel around
the inside of the tire. Look for anything that might damage the tube when you reinstall
it. Warning! Exercise caution (if there is something sticking into the tire, don’t cut yourself on it). If you
find anything, remove it.
Gently insert either the patched or a new tube into the tire. Position it so that the valve stem is aligned
with the hole in the rim. Push the valve stem through the hole in the rim and then reinstall the 10mm
nut on the valve stem to lock the valve stem in place. Gently tuck the tube completely in to the tire.
Reinstall the tire on the rim using tire irons. Take care not to pinch the tube between the tire and the
rim (and don’t damage the tube with the tire irons) when reseating the tire. Liberal use of spray
lubricant will help.
Reinstall the tire and wheel on the motorcycle before you inflate the tube. This is the reverse of the
process I described above.
After accomplishing the above, inflate the tire and to seat it on the rim.
CSC advises keeping a patch kit, a tire repair kit, and a source of compressed air with you, especially if
you ride in remote locations. If you need these items, please call CSC at 909 445 0900.