Yamaha PW SYSTEM Manual page 14

Suspension forks
Suspension forks are available with many different damping systems, each of which requires its
own form of maintenance.
Basic suspension fork maintenance is to ensure that the upper parts of the inner fork legs are clean
and free of sand, gravel or other debris. Chrome-plated inner legs must be maintained with a
chrome care product.
Please note that a suspension fork requires special care, and in order to function satisfactorily, it
must be serviced at least once a year or more frequently depending on the manufacturer's instruc-
tions. Remember to check the service intervals.
A simple fork, which only contains a steel spring, does not require much maintenance, while more
sophisticated forks are sensitive to the condensation that forms in all forks and should therefore be
disassembled, lubricated and have the oil changed after 50 - 100 hours of use.
As it requires a great deal of insight and professional skill to carry out the necessary service, it is
recommended to have the bicycle dealer carry it out.
Useful links:
www.rockshox.com
www.foxracingshox.com
www.srsuntour-cycling.com
www.rst.com.tw
Tires and tubes
Tires
Always keep the tires inflated to the correct tire pressure. It makes driving easier and prevents
damage to tires, tubes and rims.
The correct tire pressure is indicated on the side of the tyre, e.g. as INFLATED TO 40 -65 psi or
max. 60 psi. If you don't have a pump with a tire pressure gauge, the pressure can be checked by
pressing your thumbs hard against the tire. The tire should feel hard.
It is recommended to check the tires before riding for correct pressure and to remove stones that
have become stuck. This avoids many punctures.
Tubes
Bicycle tubes can be fitted with different valves. Atom, Presta and Schrader valves.
Please note that when pumping tubes with a Presta valve, the small nut on the valve must be
loosened before pumping. If this does not happen, air will not enter the tube, and you risk breaking
the valve with the pump.
Schrader valve Regular Atom valve Presta valve
14