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Ryobi RPHD52 - Page 18

Ryobi RPHD52
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and attach the extension shaft between the power head and the auger for added comfort and
deeper hole depth.
WARNING!
See
gure 8
Never use the drill with the handles above waist level.
Drilling with the units handles above waist level restricts control and can
cause serious chest injuries if a hard object is struck.
MAINTENANCE
WARNING!
Use only original manufacturers replacement parts, accessories and attachments.
Failure to do so can cause possible injury, poor performance and may void
your warranty.
You may make adjustments and repairs described here. For other repairs, have the post hole
digger serviced by an authorised service agent.
Consequences of improper maintenance may include excess carbon deposits resulting in loss
of performance and discharge of black oily residue dripping from the muffler.
Make sure all guards, deflectors and handles are properly and securely attached to avoid
the risk of personal injury.
ENGINE
Clean the cylinder fins with compressed air or a brush periodically. Dangerous overheating
of engine may occur due to impurities on the cylinder.
WARNING!
See figure 12
Never use the drill with the support frame above waist level.
Drilling with the unit’s support frame above waist level restricts control and can cause
serious chest injuries if a hard object is struck.
WARNING!
Use only original manufacturers replacement parts, accessories and attachments.
Failure to do so can cause possible injury, poor performance and may void your
warranty.
HOW THE SAFETY DEVICE WORKS
See figure 13
Your post post hole digger is built with a safety device which can prevent excessive backwards
rotation in the case of jammed drill.
When the post hole digger is used, the drill bit is driven into soil at clockwise direction. If the drill
bit touches big roots or rocks and stops rotation, all the inertia and torque from the running engine
will be thrown to the bracket, this makes it turn to opposite anticlockwise direction.
The safety bar will turn with the bracket and touch your left leg. Detecting the angle change of the
safety bar, the mechanism inside the safety device control box will act and reduce engine torque
by releasing the throttle cable to a lower speed. As a result, the post hole digger will not rotate
anticlockwise any further.
16
NOTE: Always test the safety device before operating the auger bit.
and the operation bracket is at least 300mm bellow waist level, you may stop the engine and
Stop the engine and allow it to cool before making adjustments or completing any maintenance.

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