Tar River SRB-870 Instruction Manual page 34

b. Adjustment of sliding clutch
Springs (4) are adjusted to 27 mm
6- Adjustment of twine tension
Adjust spring length to 35 mm
7- Adjustment of arm tension spring
Adjust of the spring at 8 mm
8- Adjustment of binding blade
Remove the blade and attach it after reversing if the blade is dull
Replace the blade to new one if reversed blade is dull.
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