Question about Mantis 2-Cycle Tiller

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How do I remove the plastic flywheel from the Mantis Tiller SV-4/B type 1-E so I can replace a frozen bearing. All other internals seem fine so it would be well worth replacing the bearings but I can't get the flywheel off without damaging it.I don't have a puller small enough to fit this wheel and if I did I believe it would break the plastic anyway. I tried carefully prying with 2 wide screwdriver and it doesn't work. There is some wiggle to it but it just wont come off. Thanks for reading and special thanks to anyone who can help.

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5 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 12 Answers

SOURCE: mantis tiller sv-4 echo engine: no spark from coil

There are only 4 parts to the 2-stroke Mantis ignition system: the spark plug, the "kill button", the flywheel with embedded magnets, and the coil with integral plug wire. There are no "points" to clean or refurbish. If you've tried a new spark plug, unplugged the wire leading up the handlebars, and the magnets on the side of the flywheel are strong enough to attract a screw driver blade, then it must be a bad coil. That's all it could be. End of story.

Cruising the internet I see where these Echo coils go bad all the time. You can order the coil, but if the machine hasn't run in several years the carb will also need cleaning. So one thing leads to another. The gear box grease also needs replacing each year. What I'm trying to tell you is these are disposable tillers and due to length of time, incomplete care/ storage, ....whatever, this one's time is up.

Sorry.

Posted on Mar 21, 2009

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  • 11 Answers

SOURCE: I Have a Mantis tiller that I can get NO spark

set the coil to the thickness of a dollar bill from the flywheel and tell me what happens. make sure kill wire isn't grounding somewhere else

Posted on Aug 04, 2009

panilling9
  • 284 Answers

SOURCE: what is left to do but change the flywheel?

check what they call air gap between the coil and flywheel .010-.012 gap
also be sure your flywheel is in time.
you will actually have to remove it to do this and check for the sheared key or be sure the key way aligns with the crankshaft keyway on the flywheel

Posted on May 26, 2009

  • 376 Answers

SOURCE: mantis tiller sv-4 echo engine no spark from coil

Sounds like it's flooding either from over choking or the inlet needle in the carb is leaking. Have you removed the plug and blown out the cylinder and plug with air and then tried to restart? Be careful not to keep cranking with the choke pulled out. When it 'hits' ONE time, move the choke halfway in and crank again

Posted on May 31, 2009

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Sounds like it's flooding either from over choking or the inlet needle in the carb is leaking. Have you removed the plug and blown out the cylinder and plug with air and then tried to restart? Be careful not to keep cranking with the choke pulled out. When it 'hits' ONE time, move the choke halfway in and crank again

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What is left to do but change the flywheel?


check what they call air gap between the coil and flywheel .010-.012 gap
also be sure your flywheel is in time.
you will actually have to remove it to do this and check for the sheared key or be sure the key way aligns with the crankshaft keyway on the flywheel

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Apr 18, 2009 | Mantis 2-Cycle Tiller

1 Answer

Mantis tiller sv-4 echo engine: no spark from coil


There are only 4 parts to the 2-stroke Mantis ignition system: the spark plug, the "kill button", the flywheel with embedded magnets, and the coil with integral plug wire. There are no "points" to clean or refurbish. If you've tried a new spark plug, unplugged the wire leading up the handlebars, and the magnets on the side of the flywheel are strong enough to attract a screw driver blade, then it must be a bad coil. That's all it could be. End of story.

Cruising the internet I see where these Echo coils go bad all the time. You can order the coil, but if the machine hasn't run in several years the carb will also need cleaning. So one thing leads to another. The gear box grease also needs replacing each year. What I'm trying to tell you is these are disposable tillers and due to length of time, incomplete care/ storage, ....whatever, this one's time is up.

Sorry.

Feb 26, 2009 | Mantis 2-Cycle Tiller

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