I was just rebuilding one of these valves yesterday from the lynx. It was seized rather than scratched, so it turned out OK.
I used only fine steel wool to clean this one out, polishing both the body and the center valve body (spindle) as well. If your scratching is light, you might get away with the steel wool, but if the scratch is heavier, perhaps a very fine lapping compound between the two, turning by hand at first, or using a slow speed drill if necessary.
On assembly I used a very very thin smear of petroleum jelly rather than reassembling it dry. The fuel will either wash away the jelly in which case the fuel will act as lubricant, or the jelly will remain and do it's job.
I also added a new washer under the spring to replace the bent up one and return the spring to it's full pressure. I should find out this week if the valve rebuild is successful.
Last edited by rob love; 28-04-12 at 18:27.
Reason: I liked Richards word "spindle" to describe the center portion of the valve.
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