Yanmar RT70, Operator'S Manual

Page: 106 / 223

RT70 Operator’s Manual
Microtrench - 105
Set Up
Check Bit Clearance
MT12 with blades using 10mm rotating conical
bits only
1. Remove blade cover (3).
2. Ensure all bits (1) are properly secured with bit
retaining pins are secure.
3. Ensure blade retaining nut (2) is tight.
4. Turn blade by hand and ensure bits do not hit
metal frame.
5. If bits hit frame, repeat steps 2-5 to ensure bits are in the proper location and secured at proper
depth.
If bits do not hit frame:
1. Install blade cover.
2. Fasten and adjust seat belt.
3. Start engine.
4. Adjust throttle.
5. Raise microtrencher slightly.
6. Rotate blade slowly and listen for clicking sounds. If clicking sound is present, turn off tractor and
repeat steps 1-6.
IMPORTANT:
If new bits and deflectors
are installed, it is normal for bits to hit
the deflectors until a portion of the
deflector is worn away.
1
2
3
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