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I have a troy built TB590BC 4 CYCLE TRIMMER. I had a week spark so replaced spark plug and still didn't start. Now I have no spark at all. I checked kill switch and that's seems ok. I figure it might be coil. Does anyone have directions on how to change coil? I've had problems with it since day one starting. Would have to pull cord more than normal to get it started. Thanks for your help.

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Posted on Jan 02, 2017

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SOURCE: need to clean carburetor of troy built trimmer.

Go to any auto parts store and buy an aerosol can of carbeurator cleaner. Remove the air cleaner filter and give the air intake a couple of squirts. Pull the cord and turn the engine over a couple of times to draw the cleaner into the carb. Then let it sit for an hour and dissolve what ever is gumming up your carb.

Posted on Jun 11, 2009

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SOURCE: Troy Bilt 4-cycle trimmer won't stop!

Take the switch so it is accessable
take the two wires and touch them together or hook them together bypassing the switch
does it shut off or it should not have spark?
if so you have a bad grounding problem if it does not shut off,if it does your switch is still bad
2 wires one tied to ign. module and other to a metal ground all the switch does is dead short. the igniton to shut down the spark and in turn kills the engine.
Be sure your grounding is tight and clean and all wires are intact and making good contact to their designated areas (no broken wires)
hope this helps some for you

Posted on Jun 13, 2009

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SOURCE: how to change trimmer ine in tb525cs

You need to unscrew the black bumper button. I believe it is counter-clockwise. Mine was very tight and took a pair of channel lock pliers to loosen.

Posted on Jul 19, 2010

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SOURCE: Cannot disassemble Troy-bilt trimmer head

There is a round, rotary black part between the metal piece to which the cutting head attaches and the outer plastic seat of the cutting head. There are two square slots, each about a quarter inch wide, on opposites sides of the black piece. Slide an Allen wrench or something similar firmly into the slot. Holding the Allen wrench in a stable position, turn the outer plastic ring of the cutting head (it has scalloped edges that can be gripped firmly) counter clockwise to unscrew the cutting head from the bolt on which it is mounted. Be careful with the tool (e.g. Allen wrench) used to hold the black piece steady, as it is plastic and could be damaged by the edge of the tool.

Posted on May 04, 2011

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SOURCE: I have a troy built 4 cycle trimmer. I pull on

If you can sense that the shaft is turning, then the valves are sticking open.

Posted on Jul 23, 2011

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