Lock the tool blade in the desired position by
turning the selector upwards. The rotation
mechanism is now locked.
Drilling
To achieve full performance, it’s preferable to warm
up the machine on a tamping pad for
approximately 5 minutes before drilling.
1. Before drilling, check that the flushing hole in
the drill steel is not blocked.
2. Stand in a stable position with your feet well
away from the inserted tool.
3. Press the inserted tool against the place where
you wish to drill.
4. Increase the engine speed once the drill bit has
collered a footing in the material.
5. Grip the side handle for better control of the
machine.
NOTICE
When drilling in softer material, as
concrete, a drill-bit may be needed instead of the
integral drill.
Engine speed.
The engine speed is regulated by means of the
throttle lever:
Throttle lever
Speed
Lever released
Idling speed
Lever depressed
Full engine speed
Ground probing
If the machine is started on the top of long tools
such as probing rods, a starter-cord bracket must
be used to prevent the cord from damaging the
fuel tank. For ordering of the starter-cord bracket,
see the spare parts list.
Drilling deep holes
1. Use a short drill and then fully drill into the hole.
2. Change to a longer drill with a slightly smaller
bit diameter (approx. 1mm smaller).
If the working tool gets stuck
If the working tool gets stuck, use the extraction
tool to loosen/lift it. For ordering of the extraction
tool, see the spare parts list.
When taking a break
◆
Stop the machine during breaks.
◆
During all breaks, put the machine away so that
there is no risk for unintentional start.
Maintenance
Regular maintenance is a basic requirement for
the continued safe and efficient use of the
machine. Follow the maintenance instructions
carefully.
◆
Before starting maintenance on the machine,
clean it in order to avoid exposure to hazardous
substances. See “Dust and fume hazard”.
◆
Use only authorised parts. Any damage or
malfunction caused by the use of unauthorised
parts is not covered by warranty or product
liability.
◆
When cleaning mechanical parts with solvent,
comply with appropriate health and safety
regulations and ensure there is satisfactory
ventilation.
◆
For major service of the machine, contact the
nearest authorised workshop.
Safety and operating instructions
COBRA COMBI
16
© Atlas Copco Airpower | 9800 0955 01 | 2018-01-01
Original instructions
