Ryobi HP41LK Operator's Manual page 12

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When servicing, use only identical replacement parts.
Use of any other parts may create a hazard or cause
product damage.
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Always wear safety goggles or safety glasses with side
shields during product operation or when blowing dust.
If operation is dusty, also wear a dust mask.
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To avoid serious personal injury, always remove the
battery pack from the product 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.
MAINTENANcE
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 an Authorized Service Center.
BATTERIES
This product is equipped with a lithium-ion rechargeable
battery. Length of service from each charging will depend
on the type of work you are doing.
The battery in this product has been designed to provide
maximum trouble-free life. However, like all batteries, it will
eventually wear out.
To obtain the longest possible battery life, we suggest the
following:
 Remove the product from the charger once it is fully
charged and ready for use.
For product storage longer than 30 days:
 Store the product where the temperature is below 80°F.
 Store the product in a "discharged" condition.
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