+1 to grumpy here. Many folk just assume that the Briggs soft alloy key won't do any damage when it gets sheared, e.g. by a bar blade hitting a solid object, but this is by no means always true.
This key should never be replaced with anything other than a genuine Briggs part, or a reputable clone. It's a designed 'weak point', which fails in order to prevent damage to major components.
Last edited by Gadge; 23/02/15 09:00 AM. Reason: clarification