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18
Troubleshooting
Read instruction manual first! Disconnect the power cord from the
power source before making any assembly, adjustments or changing
accessories.
Problem
Possible Cause
Corrective Action
Tool will not
start.
Power cord is not plugged in.
Plug tool in.
Power source fuse or circuit
breaker tripped.
Replace fuse or reset tripped circuit
breaker.
GFCI tripped
Reset GFCI.
Cord damaged.
Inspect cord for damage. If damaged,
have cord replaced by an Authorized
Bosch Service Center or Service Station.
Burned out switch.
Have switch replaced by an Authorized
Bosch Service Center or Service Station.
Trigger does not turn tool on.
Have switch replaced by an Authorized
Bosch Service Center or Service Station.
Cut-off wheel
does not come
up to speed.
Extension cord too light or too
long.
Replace with adequate cord.
Low house voltage.
Contact your electric company.
Excessive vibra-
tion.
Cut-off wheel out of balance.
Discard cut-off wheel and use a new one.
Cannot make
square cut when
cutting.
Roller bolt(s) bent.
Replace roller bolts and rollers.
Cut binds, stalls
motor when
cutting.
Dull cut-off wheel or worn dia-
mond grit.
Discard cut-off wheel and use a new one.
Tool does not
cut workpiece.
Cut-off wheel slipping.
Assemble cut-off wheel and tighten wheel
bolt per “Assembly Instructions”, see page
10.
Water not flow-
ing to the cut-off
wheel.
Water supply is off.
Turn on supply valve. Turn water feed as-
sembly valve on.
Water filter is blocked or
clogged.
Clean or replace the water filter.
Dust not vacu-
uming
Clogged auxiliary handle or
dust chute in upper guard.
Clean auxiliary handle and dust chute
in upper guard with a brush or blow out
with compressed air.
Summary of Contents for SPT79A
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