Maintenance; Replacing Carbon Brushes - Black & Decker SM1850BD Instruction Manual

MAINTENANCE

WARNING
!
• To reduce the risk of injury, turn
unit off and disconnect it from
power source before installing
and removing accessories, before
adjusting or when making repairs.
An accidental start-up can cause
injury.
• DO NOT touch the sharp points on
the blade with fingers or hands while
performing any maintenance.
DANGER
! To avoid injury, never
put lubricants on the blade while it is
spinning.
WARNING
!
• DO NOT use lubricants or cleaners
(particularly spray or aerosol) in
the vicinity of the plastic guard.
The plastic material used in the
guard is subject to attack by certain
chemicals.
• To avoid fire or toxic reaction, never
use gasoline, naphtha acetone,
lacquer thinner or similar highly
volatile solvents to clean the miter
saw.
• To avoid injury from unexpected
starting or electrical shock, unplug
the power cord before working on
the saw.
• For your safety, this saw is double-
insulated. To avoid electrical shock,
fire or injury, use only parts identical
to those identified in the parts list.
Reassemble exactly as the original
assembly to avoid electrical shock.

REPLACING CARBON BRUSHES

(FIGURE KK)
The carbon brushes furnished will last
approximately 50 hours of running time,
or 10,000 ON/OFF cycles. Replace both
carbon brushes when either has less than
1/4 in. length of carbon remaining, or if the
spring or wire is damaged or burned. To
inspect or replace brushes, first unplug the
saw. Then remove the black plastic cap (1)
on the side of the motor (2). Remove the
cap cautiously, because it is springloaded.
Then pull out the brush and replace.
Replace for the other side. To reassemble
reverse the procedure. The ears on the
metal end of the assembly go in the same
hole the carbon part fits into. Tighten the
cap snugly, but do not overtighten.
NOTE: To reinstall the same brushes, first
make sure the brushes go back in the way
they came out. This will avoid a break-in
period that reduces motor performance
and increases wear.
KK
LOWER BLADE GUARD
Do not use the saw without the lower
blade guard. The lower blade guard is
attached to the saw for your protection.
Should the lower guard become damaged,
do not use the saw until the damaged
guard has been replaced. Develop a
regular check to make sure the lower
guard is working properly. Clean the lower
guard of any dust or buildup with a damp
cloth.
WARNING
!
• When cleaning the lower guard,
unplug the saw from the power
source receptacle to avoid
unexpected startup.
• Do not use solvents on the guard.
They could make the plastic "cloudy"
and brittle.
SAWDUST
Periodically, sawdust will accumulate
under the work table and base. This could
cause difficulty in the movement of the
worktable when setting up a miter cut.
Frequently blow out or vacuum up the
sawdust.
WARNING
!
protection to keep debris from entering
eyes when removing sawdust from
unit.
30
1
Wear proper eye
2