Kubota RT120Q Operator's Manual page 189

Service - 188
Trencher
Replace Digging Chain
Visually check digging chains for wear on teeth
(1), rollers, and sidebars (2). Check pins (3) and
bushing wear by measuring distance between
chain pins and comparing it with a new chain.
IMPORTANT: Replace sprockets when a new
chain is installed.
To remove chain:
1. Fasten and adjust seat belt.
2. Start tractor. See page 84 for proper start-up
procedures.
3. Move attachment direction/speed control until digging chain connector pin is on top of boom.
4. Lower boom to ground.
5. Set parking brake and verify parking brake indicator is on.
6. Turn ignition switch to STOP.
7. Secure chain by clamping links on either side
of connector pin with chain jaws. Squeeze
jaws to reduce pressure on connector pin.
RT120Q Operator's Manual
As Needed