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6. If the bit binds in the hole, reverse direction of the bit
rotation to assist in “backing out” the drill.
7. Keep the drill bit centered in the hole.
COLD WEATHER OPERATION
If the drill is to be used during cold weather, preheat the
hydraulic fl uid at low engine speed. When using the nor-
mally recommended fl uids, fl uid tempera ture should be at
or above 50°F/10°C (400 SSU/ 82 centistokes) before use.
Damage to the hydraulic system or drill can result from use
with fl uid that is too viscous or too thick.
UNDERWATER MODEL
PREVENTATIVE
MAINTENANCE
After each use, the movable portions of the tool that were
exposed to water should be fl ushed with a water displacing
oil such as WD40. Remove any remaining water and debris
as follows:
1.Turn the tool upside down (without the tool bit) and spray
oil through the drive hex and side holes in the motor as-
sembly to displace any remaining water in the lower piston
cavity.
2. Spray oil into the On/Off valve trigger slot area.
3. Dip or spray the entire tool.
4. Cycle the tool hydraulically several times before storing
away.
OPERATION