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The replacement spring-loaded trigger assembly for the BB/4 bead breaker - trigger, nut, bolt and spring - that holds the blade in place for safe carrying. Supplied with the spring locked so it can be fitted, bolted up and then released. Straightforward to fit yourself.
Fit to the BB/4 with the spring locked, bolt up, then release the spring.
BB/4 owners needing a spare part.
Wipe down with an oily cloth if left standing. Check the spring, trigger and pivot bolt for wear and free movement, and that the assembly engages and holds the blade securely; replace it if the spring is weak or the trigger no longer locks.
