From:
https://www.wolfcreeksawshop.com/pr...ing-kit-for-husqvarna-61-268-268xp-272-272xp/
"Brand new Oregon/Hyway clutch kit, fits Husqvarna chainsaw models 268 268xp 272 272xp, (fits all these models after serial number 0510000). Fits Husqvarna chainsaw model 61 after serial number 0510572 with fine thread clutch."
So you need one listed that is for prior to serial 0510572.
There is one in Australia:
https://www.greenacresmowers.com.au/oregon-chainsaw-clutch-sprocket-selected-husqvarna
RIM SPROCKET 3/8 7 TOOTH
INCLUDES BEARING
FITS HUSQVARNA MODELS
61 before ser No 0510572
66 , 162 , 266 before ser no 0510000
268 , 272 super before ser no. 0510000
WITH 3/8 CHAIN
spline SD7
If you could get the Oregon part number you could find it locally.