Kubota RT120Q Operator's Manual page 169

Service - 168
Check Digging Chain Tension
To help avoid injury: Service digging boom grease cylinder only while standing on opposite side of
boom. Wear gloves and safety glasses, and cover fitting with cloth when relieving pressure in cylinder.
Check digging chain tension every 10 hours. With
boom horizontal, measure distance from bottom
of boom to chain. When properly adjusted,
distance should be 4.5 - 5.5" (114 - 140 mm).
To tighten chain, loosen six bolts on trencher
boom and pump EPG into cylinder. To relieve
chain tension, loosen plug on grease cylinder.
Plow
Lube Plow Pivots
Lube pivots every 10 hours with EPG.
.
Pressurized fluid or air could pierce skin and cause severe
injury. Refer to operator's manual for proper use.
RT120Q Operator's Manual
270-6035
10 Hour