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Old 04-12-2005, 02:41 PM
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Beav Beav is offline
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Join Date: Nov 2001
Location: Louisville, KY
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Significant Technical Input
Probably inserts the center portion inside a tube of rubber, stretch the rubber (extrude) and slide the sheave on. Check the balance on a lawn mower blade balancer and away you go.

Just a guess...
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