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How do ireplace a flywheel key on a toro z153

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  • Toro Master
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Remove cowling from engine.
Remove flywheel ( may need puller)
Remove and Replace key, if damaged.
Reinstall flywheel.
Reinstall cowling.

Posted on May 12, 2014

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Posted on Jan 02, 2017

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steve_lima
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SOURCE: how do I change flywheel key

remove the nut that holds the flywheel on.right hand threads.once the nut and starter hub is off the keyway will be visible.you can tell if it is broken then.if it isn't put the hub and nut back on.....problem somewhere else.if it is broken...take a small hammer and tap the flywheel on the oppisit side of the keyway.usually only takes a couple of hits from the hammer.once the flywheel is off the key comes right out of the crank shaft......replace the key,reinstall the flywheel.(some times you have to hold the brake off so the flywheel will slip all the way on shaft) install hub and nut.hope this helped,let me know........................

Posted on Jun 26, 2009

wadembly
  • 489 Answers

SOURCE: I have a toro self propelled lawnmower. Ireplaced

the spider gears are in on the wrong side more less like you put the rear end in backwards

Posted on Nov 10, 2009

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1 Answer

It there a timing mark for a toro lawn mower gts195cc?


Usually there is not. The timing is through the flywheel that connects to the crankshaft and it is permanently set with a woodruff key. When evereything is tight, the timing is good. IF you hit something and cause the blades to stop, the flywheel can move and twist on the shaft and bend the woodruff key. The engine then wont start or will backfire etc. To fix this you need to pull the flywheel off the crankshaft and replace the woodruff key and reinstall it.

Mar 31, 2014 | Toro Garden

1 Answer

My 3 year old 22 inch walk behind mower will not start, I replaced the spark plug, there is no spark when I pull the hand start


Replace the flywheel key by removing the rewind housing, the flywheel nut and then remove the flywheel by using a small engine universal puller (cheap) and install a new key.

Jun 03, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

Stopped abruptly won't restart


tThe flywheel is indexed to the crankshaft with a soft aluminum "shear" key, when the blade is stopped suddenly the key is broken instead of the crankshaft. The flywheel will need to be removed and a new key installed. Make sure to clean the shaft and flywheel mating surfaces so they fit tightly or the new key won't last too long.

May 27, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

I have a Toro walk behind self propeled mower. Last summer my sons hit something which made the mower stop running. I was told that I needed to replace somesort of key...? How...? How do I get the top off....


Was it the 'flywheel key' ? Does it yank the rope out of your hand violently when you try to start it?
Take the top shroud off, remove the flywheel nut, washer and screen. Remove the flywheel by threading the nut back onto the crank end to protect the threads and with a brass hammer ( and while lightly prying with a screwdriver from behind the flywheel) and a few good solid taps on the end of the crankshaft the flywheel should free up.
Remove the flywheel and inspect the key. Even .001th off will make the motor run funny or not at all.

Dec 07, 2009 | Toro Lawn Mower With Toro Power Tools

2 Answers

I have a toro self propelled lawnmower. Ireplaced


the spider gears are in on the wrong side more less like you put the rear end in backwards

Nov 09, 2009 | Toro Lawn Mower With Toro Power Tools

1 Answer

BROKEN BRAKE PAD UNDER FLYWHEEL ON TORO LAWN MOWER THE ENGINE IS A TECUMSEH MODEL lev120 SPEC 361541b 195cc


If you had replaced the flywheel key & did not engage the saftey bail it would brake the brake. Make sure the bail is engaged befor installing the flywheel.

Sep 23, 2009 | Toro Lawn Mower With Toro Power Tools

2 Answers

Mower wont start


You will need to replace an aluminum "key" in the flywheel. Whenever you hit something, the key is designed to shear so you don't break something major.

Sep 02, 2009 | Toro Lawn Mower With Toro Power Tools

1 Answer

How do I change flywheel key


remove the nut that holds the flywheel on.right hand threads.once the nut and starter hub is off the keyway will be visible.you can tell if it is broken then.if it isn't put the hub and nut back on.....problem somewhere else.if it is broken...take a small hammer and tap the flywheel on the oppisit side of the keyway.usually only takes a couple of hits from the hammer.once the flywheel is off the key comes right out of the crank shaft......replace the key,reinstall the flywheel.(some times you have to hold the brake off so the flywheel will slip all the way on shaft) install hub and nut.hope this helped,let me know........................

Jun 26, 2009 | Toro Lawn Mower With Toro Power Tools

2 Answers

Toro mower does not strat


Did you possibly hit something? Sounds like the flywheel key may have sheared.

May 18, 2009 | Toro Lawn Mower With Toro Power Tools

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