Details
| Diagram | Fig. 3 — Valve Gear · ref 9 |
| Listed in parts books | 1973 |
Norton Valve Spring Inner
Inner valve spring from the valve gear assembly, cataloged for 1973.
PN · NM22839
NM22839 is the inner valve spring listed in the valve gear section of the parts books, dated to 1973. In an engine using dual valve springs, the inner spring works alongside an outer spring to close the valve and keep it seated against the seat through the cam's opening and closing cycle.
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