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18
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.
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.
Electric tools used on fiberglass material, wallboard,
spackling compounds, or plaster are subject to accelerated
wear and possible premature failure because the fiberglass
chips and grindings are highly abrasive to bearings, brushes,
commutators, etc. Consequently, we do not recommended
using this tool for extended work on these types of materi-
als. However, if you do work with any of these materials, it is
extremely important to clean the tool using compressed
air.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrica-
tion is required.
WARNING:
To ensure safety and reliability, all repairs (with the
exception of the externally accessible brushes) should be
performed by a Ryobi Authorized Service Center.
BRUSH CAP
BRUSH
ASSEMBLY
BRUSH
ASSEMBLY
BRUSH
CAP
Fig. 16
BRUSH REPLACEMENT
See Figure 16.
Your cut-off machine has externally accessible brush as-
semblies that should be periodically checked for wear.
Proceed as follows when replacement is required:
n Unplug the cut-off machine.
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
n Remove brush cap with a screwdriver. Brush assembly is
spring loaded and will pop out when you remove brush
cap.
�n Remove brush assembly.
�n Check for wear. Replace both brushes when either has
less than 1/4 in. length of carbon remaining. Do not
replace one side without replacing the other.
n Reassemble using new brush assemblies. Make sure
curvature of brush matches curvature of motor and that
brush moves freely in brush tube.
�n Make sure brush cap is oriented correctly (straight) and
replace.
n Tighten brush cap securely. Do not overtighten.