Compact Power BOXER 999-823 - Manual (Page 68)

4-20
Routine Service and Maintenance
Adjusting Digging Chain Tension
Adjust the digging chain tension every 25 operating hours. With the trencher parallel to the
ground, make sure that there is 1¾" to 2" of chain sag between the bottom of the boom and the
top of the bottom chain span. See
Figure 4–18 .
• For a new chain, check the chain sag after the first hour of operation.
• Depending on working conditions, chain sag adjustments may need to be done more
frequently.
If a chain sag adjustment is needed, adjust the chain using the following procedure:
Figure 4–18 Chain Sag
Do not over tighten the chain. Excess chain tension may damage drive components.
NOTICE
1 3/4 - 2”
2457
NOTICE