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Backfiring Ariens 21 backfiring but not starting

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Sounds like it's out of time

Posted on Oct 11, 2013


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Ariens 21 backfiring but not starting

IF IT RAN AND now it doesnt
not waiting a year or so before trying
check flywheel key
you can check blade if its bent then key more than likely is sheered

Oct 10, 2013 | Ariens Garden

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Ariens 21in classic is not starting, airfilter was drenched in gas and acts flooded, how can i fix that?

maybe it is drenched with fuel the needle and seats are having a hard time in the carbs sitting in the newer fuel we now have

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Ariens self propelled hit a rock will not start clanks and smokes Crankshaft does not seem to be bent. Somtimes kicks back when trying to start.

If you have kick back or the mower backfires you probably have a partially sheared flywheel key.

The good news is they are cheap and designed to shear to protect the motor from damage.

You can take the recoil cover off the engine and then remove the nut that holds on the flywheel and gently pry off the flywheel.

You should see a mangled flywheel key that was under the nut holding the flywheel on. Take it to a mower parts store and match it up with a replacement. Put the new one back in and reinstall the flywheel.

That should do it! Good luck and be careful!

Aug 24, 2010 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

What spark plug is needed for an Ariens 21 lawn mower

spark plug.
21543600 (911160,161,162,163,164,165)
21540800 (911133,134)
hope this helps.

Aug 13, 2010 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

Kids broke pull cord

Remove the entire housing and do not drill the rivets unless you can replace them with the same size.

Jun 07, 2010 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

''ariens 21'' self going -or need mix petrol and oil?

you shouldnt need a petrol oil mix in the tank on a lawn mower

May 08, 2010 | Ariens 21 In Classic Walk Behind Push Lawn...

1 Answer

My Ariens 21 walk behind mower has lost its drive.

YES ! Probably the drive belt.

Jul 05, 2009 | Garden

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