Snapper PRO S120 Serie Instructions De Montage page 17

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4. With the parking brake engaged measure the
compressed spring length. The spring should
measure 2-1/4" (5,7 cm) when compressed.
5. If the spring length is not 2-1/4" (5,7 cm), release
the parking brake, and turn the adjustment nut (B) to
compress or release the spring.
CAUTION
Do not adjust the spring to be shorter than 2" (5,1 cm) when
compressed. This may damage the brake mechanism.
6. Engage the parking brake and re-measure the spring.
If this does not correct the braking problem, see your
dealer.
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