Bredal F4 - Installing and Tightening New V-Belts; Inserting Belt Tighteners; Adjusting Belt Tightener Spring Tension

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Insert the belt tighteners into the loose ends of the belt.
Then attach the spring to the belt tightener.
Tighten the spring until it has a length of 91–93 mm.
Attach the upper two V-belts to the headland gear.