Adjusting Digging Chain Tension - Compact Power BOXER 999-823 Operator's Manual

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
• 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:
Do not over tighten the chain. Excess chain tension may damage drive components.
4-20
Figure 4–18.
NOTICE
1 3/4 - 2"
Figure 4–18 Chain Sag
NOTICE
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