29
MAINTENANCE
WARNING:
When servicing, use only identical Ryobi replacement
parts. Use of any other parts can create a hazard or cause
product damage.
WARNING:
Always wear eye protection with side shields marked
to comply with ANSI Z87.1 during product operation. 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 can 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, commuta-
tors, etc. Consequently, we do not recommended using this
tool for extended work on these types of materials. 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.
BRUSH REPLA
CEMENT
See Figure 35.
The saw has externally accessible brush assemblies that
should be periodically checked for wear.
Proceed as follows when re
placement is required:
Unplug the saw.
WARNING:
Failure to unplug the saw could result in accidental start-
ing causing serious injury.
Remove brush cap with a screwdriver. Brush assembly is
spring loaded and will pop out when you remove brush
cap.
Remove brush assembly.
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.
Reassemble using new brush assemblies. Make sure
curvature of brush matches curvature of motor and that
brush moves freely in brush tube.
Make sure brush cap is oriented correctly (straight) and
replace.
Tighten brush cap securely.
Do not overtighten.
BRUSH
CAP
Fig. 35
BRUSH
CAP
BRUSH
ASSEMBLY
