|There were different numbers for early
K-models, but by the time 1958 rolled around, the second year of the
Sportster, this washer has stayed the same.
Note the BOM table in the countershaft sub-assembly page.
The -52 is for 1952 to 1957, the -58 is 1958 to 1984.
This page will be updated later with what to look for as this part wears or fails.
|The left countershaft has a spiral gear as part of the low or 1st gear. It drives the speedometer on 1952 to 1972 models. The right countershaft is what would be used on 1973 to 1984 Iron Sportsters, the speedo is from the front wheel.
The washer goes between the 3rd gear and 2nd gear, where the darker circle is in this picture.