My Bosch 1274DVS 3" x 21" belt sander will run only sporatically
When I pull the switch, the motor won't start. Sometimes, with the switch on and shaking it it will start to run. I replaced the brushes, but the old ones did't look too worn. Once it starts, it will run until I let of the switch, which seems to "click" and work OK. Sometimes, with rupeated triggering of the switch alone, it will start.
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If you're Toro electric blower is slowing down, throwing sparks, or not starting you may need to replace the carbon brushes. Replacing brushes and cleaning commutator early can prevent damage to motor armature!
There are Electric Motor replacement carbon brushes on E-bay for all three motor sizes (7 AMP, 10.5 AMP, and 12 AMP) of Toro Leaf Blowers (Toro Rake and Vac Super and Ultra Blower Vacuums)
Search E-bay for: "Toro Blower Carbon Brush"
- 12 Amp leaf blowers Toro Super (Old model 51552) through Toro Ultra (New model 51609).
- 10.5 Amp leaf blowers Toro Old through Toro New model 51573.
- 7 Amp leaf blowers Toro model 51586 and other Toro 7 amp blowers.
IF it is a capacitor start it will not have brushes but a start or a start run capacitor. If it has a start capacitor the in the back of the motor there will be a governor operated switch that you would hear click as the motor starts to run. If it is a start /run capacitor the it is in the circuit all the time . Pull the capacitor out and check it externally and you will probably find that it has exploded and there is gunk leaking out of the case . Go to a motor rewinding place and they will have the correct capacitor for the motor.. Take it as a sample.
the motor carbon brushes need replacing which is a most difficult job to get the cleaner disassembled. Brushes are easy to fit if You have replaced carbon brushes in other appliances etc.. Getting to the brushes in the Kirby is very difficult... Lee in Australia
Sounds like u have a starter motor problem!
You have to go to ur favorite mechanic and have the starter assembly pull and check the carbon brush, I bet its already worn down and needs to be replace!
Hope thats FiXYA up!
Check the plug for loose wire or at blower where wire it enters to make sure the wire was not pulled and disconnected inside. If after looking and it is not a wire, check the brushes on the motor. They could be worn out or not making a good contact. Blow out brush housing and re-install brush sometimes this works. That's about all I can think of unless there is a safety switch then check that. Good luck.
Turn the vacume upside down. Remove the 5 screws on the bottom plate. 3 are near the brush roll, and 2 are near the back. Remove the bottom plate. take the belt off the motor end. pull up on both ends of the brush roll. Put new brush roll on making sure that you put both ends to the new position, not old. ( it is marked on one end, and there are marks on the side that goes up so the can match.)(If putting back the old brush roll you can switch to the old position. After a year or two you can switch the new brush roll to the old position.) Put the bels back on the motor shaft and then stretch and start the belt on the brush roll and rotate the brushroll by hand untill the belt is all the way on.
put the bottom plate back on and tighten the 5 bottom screws.