Troy bilt electric leaf blower will not turn on. model # tb190bv. suspect that it is the switch.

check kill system... there is a safety switch close to the auger or the cover for it... then suspect a coil but next time, how about mentioning the engine because troy bilt never doesn't make engines

Sounds like either the switch for the blades is not shutting off the power to the electric clutch or the clutch itself is not disengaging. I would shut the mower off and unplug the wire to the electric clutch and then start the mower and make sure the blades do not turn you may have the belt for the blades on the wrong pulley and it might be causing the blades to turn. Hope this helps.

Hi check for compresion first

Check wiring, switch, then motor, for any damage.

When the switch went bad on my TB190BV I was able to cut the wires at the terminals and re-solder to the other side of the switch. There are free terminal on the opposite side of the switch from the factory connections. Make sure to mark all of the wires and reattach to the free terminals (You have to turn the switch 180 degrees, so you're soldering in the opposite order from the original orientation!) If you are not sure, with the motor unplugged from any power, check the pairs of terminals with a multi-meter set on ohms. The pairs with the highest ohms (highest resistance) is the off position, the pairs with the second highest ohms is low power setting and the lowest ohms is the high power setting. Before you cut the original terminals you may want to do this test to see if the current terminals are bad. If the ohms are high on all settings then the switch is bad.

Your 31cc engine uses a Champion RDJ7Y. The gap is .020".

No this can't be a safety feature, the switch would have to have some kind of mechanical property to make it turn off, ie servo, actuator etc etc, they just don't put that stuff on lawn and garden equipment. The switch has failed. Simply get a SPST rocker switch and put it in. You can get them for a steeper price from the manufacturer however if you look on digikey you can find them really cheep. Hope it helps.

no it sounds as though you have a bad coil

http://www.troybilt.com/webapp/wcs/stores/servlet/topcategory_10001_14102_-1

Is the pull rope in the front or rear of engine.Thinking that the string is in the front,you must throttle housing and shaft from engine. remove starter housing. There sould be a screw holding the string and spring in place.