Sears 721.21195000 Basic Field Manual page 11

3) SWITCH OFF BUT MOTOR TURNS
4) WEAK SUCTION POWER
Low rotation speed
Motor turns normally,
but suction power is weak
Poor connection
Poor switch
Carbon brush defaced
Motor armature cut
Foreign matters attached to
the impeller
Low voltage
Hose and extension wands are
clogged with foreign matters
Filter bag or cloth bag is filled
with inhaled foreign matters
The slide knob on the handle
is opened
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MODEL 721.21195000
721.21295000
20.21125
20.21325
Repair
Exchange the switch
Exchange the carbon brush
or the motor
Exchange the motor
Remove the foreign matters
Inquire to the power utility
company
Remove the foreign matters
in the hose or extension wands
Remove the foreign matters
or exchange the filter bag or
clean the cloth bag
Close the slide knob by
sliding it