MAINTENANCE
Manual Up/Down System
MAINTENANCE
1597doc030112
6-3
6
6.6
Manual Up/Down System
1.
Adjust the up/down chain tension as needed. Measure the chain tension with the head all the way
to the top of the vertical mast. Secure the head with a chain at the top, or shim it underneath. Find
the chain adjusting bolts at the bottom of the mast. Loosen the sprocket nut on the bolt and lock
nuts and using the adjustment bolts move the sprocket down until there is about 1" (2.5 cm)
deflection in the center of the chain with a 2,3 Kg deflection force. The adjustment bolts must be
adjusted evenly.
WARNING!
Always secure the head with a chain or a brace before
adjusting the up/down chain. The head may fall, causing severe
injury or death.
See Figure 6-2.
FIG. 6-2
Sprocket Nut
Lock Nut
Adjustment
Bolt