Question about Troy-Bilt 4-Cycle Curve Shaft Gas String Trimmer #41ADT41C966

1 Answer

What should gap be between ignition module and flywheel magnets on troybilt 575ss 4 cycle weed trimmer? It is a year 2006 model.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 376 Answers

Pull the module back, tighten it up and align magnets on flywheel with module. Put a business car between them and loosen the module. It will move against card. Tighten the screws there. It's set.

Posted on Jun 27, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How to put a new battery cable on my troy built weed eater model # tb22ec?

I don't think this item has a battery

Troy Bilt TB22EC 41ADT22C966 25cc 2 Cycle Curved Shaft Trimmer Parts

TB22 EC Curved Shaft String Trimmer by Troy-Bilt EC Curved Shaft String Trimmer. 25cc, 2-Cycle Gas Trimmer / Attachment-Capable Design Model No. 41CDZ22C766 .

Jul 31, 2017 | Troy Garden

1 Answer

My trimmers contacts are always closed so my trimmer wont start, how do i fix this

Use a standard sized business card. Place it between the legs on the ignition module and the flywheel. Loosen the screws on the module. Let the magnets in the flywheel (you can see them) draw the legs in. Your "air-gap" will be set and the setting is about .010". You will now have spark and it may just run!

May 27, 2011 | Poulan 25cc 2-Cycle Gas Powered String...

1 Answer

How can I trouble shoot the kill switch on a echo weed eater. The spark plug is good as it has ben tested on another machine. There is no spark and seems the kill switch should be the next obvious thing...

Check the kill switch terminals with a continuity tester (small multi-meter will work). If the switch is Ok and there is no spark, take off the engine cover and check the "air-gap" between the magnets in the flywheel and the ignition module legs.The closer the better, but you want about a ,008-.010"gap there...about the width of a standard sized business card. Metal feeler gauges "stick" of course to the magnet area in the flywheel and throw off clearance sensitivity. Try it with a business card. If not in range, then loosen the coil screws, double the card over, and let the magnets pull the coil legs into the card...retighten screws and check for spark.

Mar 15, 2011 | Echo Garden

1 Answer

Model 55 ignition module gap

Turn the flywheel magnets just under the module poles, insert a thin business card into the pole gaps, and allow the module to contact the magnets. Tighten the module screws and rotate the flywheel somewhat to release the card. Finally, turn the flywheel one full turn to make sure the pole gaps don't close further. Hope this helps!

Jan 29, 2011 | Husqvarna Garden

1 Answer

I have a one year old simpul weed trimmer and haven't used it to often, a half dozen times at most and last week while using it, it all of a sudden lost power, I installed a new plug and no difference,...

Sudden stopping is usually related to ignition problems. Remove the plug and test for spark--it should be blue and snappy with a fresh plug gapped at 0.020". If the spark looks good, try pouring a little fuel mix into the plug hole and try for start. If it pops several times, then check the fuel filter for plugging (in the tank) and check the fuel line(s) for decay or other damage. Make sure the carburetor fasteners are tight. If you got no/very weak spark in the first test, the ignition module may have failed. The outer case must be removed to access the flywheel and module. Check the module pole gap using a thin business card for a gauge--rotate the flywheel magnets under the module poles, insert the card into the pole gap, loosen the module screws, and allow the module to contact the magnets. Tighten the screws, and rotate the flywheel somewhat to remove the card. Retry for spark--if still nothing, remove the stop switch wire from the module and try again. If nothing again, replace the ignition module. Hope this helps!

Aug 14, 2010 | Garden

1 Answer

No spark form high tention wire chain saw will not start

Try a fresh plug gapped at 0.020". If no help, remove the cover from the flywheel side of the engine so that the flywheel and ignition module are exposed. Remove the ignition switch wire from the module and try for spark again. If nothing, then check the gap between the flywheel magnets and the module poles with a thin business card--insert the card into the gap and allow the module to snap to the magnets when the screws are loosened and then tightened. Rotate the flywheel somewhat to work out the card. Recheck for spark again--if still nothing, replace the ignition module using the same procedure as above for installation (don't forget the ignition switch wire). Hope this helps!

Jul 12, 2010 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Poulan 295 model chainsaw/ won't start, no spark

Start first with a fresh spark plug set at 0.020" gap. Make sure ignition switch is on. If still nothing, remove the cover from the flywheel. Set the ignition module gap by using a thin business card between the module poles and the flywheel magnets. Loosen the mounting screws, let the module contact the magnets, and re-tighten the screws. Turn the flywheel to remove the card, then rotate the flywheel on full turn checking that the gap doesn't close-up any further. Check for spark again--if still nothing, remove the ignition switch wire from the ignition module. Check for spark--if spark now occurs, check the condition of the ignition switch or the connecting wire may be grounding out somewhere in between. If still nothing, replace the ignition module. Hope this helps!

Jun 10, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

25 cc craftsman weed trimmer.\r\nNot getting spark

If you're sure it's not getting spark, the first thing to check would be the "air-gap" setting between the magnets on the flywheel and the ignition coil module . The correct setting basically only requires the use of a regular business card and is around .010"-.014" If there is an air gap present, check it and then you can move on to diagnose the coil module ( they don't go bad very often) if necessary.

Jun 08, 2010 | Craftsman Garden

1 Answer

Trimmer dosen't start. Started one day - the next day nothing. I've replaced the plug, checked for spark (seems weak),gapped the ingition module, tried carb cleaner in the cylinder, and still won't go....

When you gapped module did you set it to Manufacturers spec.....extremely important, also supposed to use brass feeler blades to gap. Gap is usually 0.010" inch. Also ensure that the flywheel magnets are NOT rusty.

Timing will alter if flywheel key is worn.

Is fuel getting through as the carby has a fuel pump diaphragm in it also.

Have you trieds pulling choke when it splutters, will ID fuel stravation??

Jan 08, 2010 | Troy Bilt Tb425cs 26cc 4 - Cycle Curved -...

Not finding what you are looking for?
Troy-Bilt 4-Cycle Curve Shaft Gas String Trimmer #41ADT41C966 Logo

Related Topics:

492 people viewed this question

Ask a Question

Usually answered in minutes!

Top Troy Garden Experts

Jim Parker
Jim Parker

Level 3 Expert

1041 Answers

Matt Olenzek
Matt Olenzek

Level 2 Expert

297 Answers


Level 3 Expert

2931 Answers

Are you a Troy Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides