RT80 Operator’s Manual Saw - 79
Setup
CMW
Before First Use and After Replacing Bits
Check Bit Clearance
1. Check that all bits are properly secured.
• Tap bits lightly with a hammer and turn by hand.
• If bits are stuck, remove and clean packed soil from bit block.
2. Check that all bit retaining rings are secure. For best results, use retaining clip loading and removing
tool and a knock-out bar included with saw to remove and reinsert bits.
3. Spin wheel by hand and listen for bits hitting diverters.
4. If bits hit diverters, repeat steps 1-3 to make sure bits are in the proper location and secured at proper
depth.
5. If bits do not hit diverters:
• Set parking brake.
• Fasten and adjust seat belt.
• Start tractor and adjust throttle.
• Raise saw slightly.
• Use attachment speed/direction control to rotate saw slowly. As it rotates, listen for clicking
sounds. If clicking is present, repeat steps 1-4.
Normal Use
1. Fasten and adjust seat belt.
2. Start tractor. See page 60 for start-up procedures.
3. Drive to starting point. Move in line with planned trench. See page 62 for correct operating procedures.
4. Engage parking brake and verify parking brake indicator is on.
5. Switch transmission speed to low.
6. Swivel seat to desired position.
Flying objects may cause injury. Wear safety glasses.
NOTICE: Unless otherwise instructed, all service should be performed with tractor off.
IMPORTANT:
• Carbide bits are recommended for cutting abrasive material, such as sandstone or frozen sands or
gravels.
• Saw use is not recommended for soft, wet, or sticky soil conditions.
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