Maintenance
Up/Down System
5
5-28
HD97doc041910
Maintenance
5.15 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 carriage with a chain at the top. Find the
chain adjusting bolt at the bottom of the mast. Use the adjustment nut(s) to adjust the bolt
until the center of the chain can be deflected 3/4” (1.9cm) forward
and
3/4” (1.9cm) back-
ward 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 adjust-
ing the up/down chain. The cutting head may fall, causing
severe injury or death.
CAUTION!
Do not over-tension the chain. Over-tensioning
the chain may lead to early failure of the gear reducer.
See Figure 5-16.
FIG. 5-16 SPRING-LOADED DESIGN (4/00+)
Adjustment Nut
3H0654-2
