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20RTK – 23RTK OWNER’S MANUAL 12/8/21 Page 6 of 18
CHAIN INSTALLATION
CAUTION!!
The chain is quite heavy. You may want help to lift it.
1.
Slide chain under sprocket, with teeth in the correct cutting direction. Properly installed, the
cutting edges of the chain will face forward on the top of the boom and rearward on the bottom of
the boom (see diagram below).
2.
Start engine and push digging boom control lever forward to lower boom onto the chain. Stop
engine.
3.
Wrap chain around boom and sprocket. Install chain master link or link pin and cotter.
4.
Use boom adjuster screw to tighten chain. Chain should have enough slack to allow approximately
2" (5cm) of space between middle of boom and chain when boom and chain are straight out in a
horizontal position. Tighten adjuster screw locknut.
Forward
Cutting edge
Cutting edge
Rearward
OPERATOR TRAINING
Rental companies should demonstrate all of the machine operations to each rental customer including:
•
Starting up the engine.
•
Loading the trencher onto the trailer and securing it for road transport.
•
Unloading the trencher from the trailer.
•
Trenching procedure - Operation of the trencher.