Maintenance
Up/Down System
5
5-9
WMdoc072619
Maintenance
5.10 Up/Down System
WARNING!
Before performing service near moving parts such as
blades, pulleys, motors, belts and chains, first turn the key switch to
the OFF (#0) position and remove the key. If the key is turned on and
moving parts activated, serious injury may result.
Adjust the up/down chain tension as needed. Measure chain tension with the head all the
way to the top of the vertical mast. Secure the head with a chain at the top. Find the chain
adjusting bolt at the bottom of the mast. Use the adjustment nut to adjust the bolt until the
center of the chain can be deflected 3/4” (1.9cm) forward
and
3/4” (1.9cm) backward with
a 5 lb. (2.3 Kg) deflection force.
WARNING!
Always secure the saw head with a 5/16" chain with at
least 1900 lbs. working load capacity before adjusting the up/down
chain. The cutting head may fall, causing severe injury or death.
See Figure 5-4.
5.
Adjust the up/down belt as needed. Remove the up/down housing cover. To tighten the
belt, loosen the motor mount bolts. Pull the motor upward so there is 3/8" (9.5 mm)
deflection with a 5 lb. (2.3 Kg) deflection force. Retighten the motor mount bolts. Replace
the drive pulley cover.
WARNING!
Always secure the saw head with a 5/16" chain with at
least 1900 lbs. working load capacity before removing the up/down
motor belt. The cutting head may fall, causing severe injury or death.
Periodically check the belt for wear. Replace any damaged or worn belts as needed.
FIG. 5-4
AR
3H1075-3C
Adjustment Nut
AR
