Ryobi HP472 - Manual (Page 17)

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MAINTENANCE
WARNING:
When servicing, use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
WARNING:
To avoid serious personal injury, always remove the
battery pack from the tool when cleaning or performing
any maintenance.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.
Only the parts shown on the parts list are intended to be
repaired or replaced by the customer. All other parts should
be replaced at a Ryobi Authorized Service Center.
CHUCK REMOVAL
See Figures 13 - 15.
To remove the chuck:
n
Lock the switch trigger by placing the direction of rotation
selector in center position.
n Insert a 5/16 in. or larger hex key into the chuck of the
drill and tighten the chuck jaws securely.
n Tap the hex key sharply with a mallet in a clockwise di-
rection. This will loosen the screw in the chuck for easy
removal.
n Open the chuck jaws and remove the hex key. Remove
the chuck screw by turning it in a clockwise direction.
NOTE: The screw has left hand threads.
n
Insert the hex key in the chuck and tighten chuck jaws
securely. Tap sharply with a mallet in a counterclockwise
direction. This will loosen the chuck on the spindle. It can
now be unscrewed by hand.
Fig. 15
Fig. 13
CHUCK JAWS
MALLET
HEX KEY
WRENCH
KEYLESS
CHUCK
SCREWDRIVER
Fig. 14