Yamaha YG-2500 Owner's Manual page 2

Please observe the following instructions for proper handling of the gas spring.
1. Precautions for handling the gas spring
This gas spring requires no oil supply to its sliding section. Additional oil will reduce the sealing dura-
bility and cause the oil to leak.
Never apply any impact to the gas spring. It will cause oil leakage, malfunction or breakage.
Never disassemble the gas spring. As a high pressure gas is sealed in it, disassembling it will cause
a high risk.
Note that there is not much rigidity in the bending direction. Depending on accuracy in its installation,
the bending load will cause the rod to bend, resulting in malfunction.
Note that a nick on the piston rod or cylinder will shorten the service life of the sealing or cause a
malfunction.
Do not expose the gas spring to an excessively high or low temperature. The allowable temperature
range for use is -20°C to 80°C.
Avoid using the instrument where it is exposed to to rain, water or much dust.
Do not apply an excessive force to lift the frame end and pull off the gas spring from the leg.
G Do not apply a high tensile load to the gas spring as it will cause damage to the gas spring.
G In the event of a failure, stop using the instrument and contact the shop of its
purchase. If your dealer is unable to assist you, please contact Yamaha directly.
2. Instructions for discarding the gas spring
Make sure to observe the following instructions when discarding the gas spring.
As pressurized nitrogen gas is sealed in the gas spring, be sure to release before discarding it. Or an
explosion may occur, causing an injury.
[PRECAUTIONS]
A. Do not crash.
B. Do not cut.
C. Do not make a hole anywhere other than the
specified positions (q and w in the Fig.1).
D. Do not throw it in the fire.
[Discarding procedure]
1. Put the gas spring in a plastic bag. Using a drill of 2 to
3 mm, make a hole q from outside of the plastic bag
at the position as specified in the figure to release the
gas and oil and then make a hole w at the position
as specified. (Be sure to make holes in the order
of q and w. )
2. If a plastic bag is not used, the oil and drill chips will
spread. (In such a case, wear eye protection
glasses. )
16
PRECAUTIONS FOR HANDLING GAS SPRING
CAUTION
DANGER
Fig. 1
q
* Drill 2 holes as shown above to release the
gas before discarding the gas spring.
w
Drill
Plastic bag