Posted by Tommo on December 02, 1998 at 22:40:48:
In Reply to: rotary valves posted by Brian on December 02, 1998 at 13:55:56:
I would recommend purchasing the complete set of Yamaha rotary oils. The set
consists of a rotar oil, spindle oil and lever oil. The rotar oil is used on
the inside of the valve. To use it, you pull out the relevant valve slide
and put in a couple of drops. The spindle oil is applied by unscrewing the
back of the valve and placing a drop on the little round knob (the spindle).
The lever oil is used on springs and joints relating to the key mechanism.
The lever oil helps to keep the action silent. I've used these oils on my
horns for 6 months and my valve and they have never felt better.
Some people will talk about "tapping" a valve out if it gets really bad. The
procedure of doing this changes from brand to brand. However, unless you
really know what your doing, you can make of big mess of it! If I ever have
serious valve problems, take your horn to a repair guy and save yourself a
big headache.