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Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement

Introduction

This guide shows how to replace the rear height-adjustable axle on the Toro Walk Behind Mower 21199HD 2018.

Note: This procedure requires two people.

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  1. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Disconnect the spark plug wire: étape 1, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Disconnect the spark plug wire: étape 1, image 2 de 2

    • Before you begin, ensure that the mower is powered down and cool to the touch.

    • Grab the plastic housing at the end of the spark plug wire and pull firmly to disconnect it.

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  2. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Chock the rear wheels: étape 2, image 1 de 1

    • Chock the rear wheels to prevent the mower from rolling during service.

    • If the blades are extremely dirty, you can clean them using the washout fitting so the bolts on the underside of the blade guard are accessible.

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  3. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Lift up the deflector: étape 3, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Lift up the deflector: étape 3, image 2 de 2

    • Lift up the plastic deflector.

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  4. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the grass bag: étape 4, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the grass bag: étape 4, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the grass bag: étape 4, image 3 de 3

    • While holding the deflector up and out of the way, lift the grass bag handle away from the mower to detach it.

    • Remove the grass bag.

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  5. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Set the height adjustment lever: étape 5, image 1 de 1

    • Set the height adjustment lever all the way forward, past the "A" setting, to loosen the axle spring underneath the mower.

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  6. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Tilt the mower on its side: étape 6, image 1 de 1

    • Tilt the mower onto its side so the blades are facing out.

    • This may require two people.

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  7. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Unhook the axle spring: étape 7, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Unhook the axle spring: étape 7, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Unhook the axle spring: étape 7, image 3 de 3

    • Reach underneath the axle, near the transmission, and pull the axle spring out towards the axle and down to unhook it.

    • Return the mower back to an upright position.

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  8. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Block up the mower: étape 8, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Block up the mower: étape 8, image 2 de 2

    • Place the mower on blocks so each wheel is above the work surface and can rotate freely.

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  9. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the wheel: étape 9, image 1 de 1

    • Use a 9/16 inch socket to remove the wheel nut.

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  10. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 10, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 10, image 2 de 2

    • Remove the wheel.

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  11. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the axle components: étape 11, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the axle components: étape 11, image 2 de 2

    • Remove the wheel washer.

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  12. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 12, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 12, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 12, image 3 de 3

    • Remove the dust cover.

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  14. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 13, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 13, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 13, image 3 de 3

    • Use a pair of needle nose pliers to remove the gear retaining pin.

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  15. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 14, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 14, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 14, image 3 de 3

    • Remove the drive gear.

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  16. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 15, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 15, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 15, image 3 de 3

    • Use a pair of snap ring pliers to remove the snap ring from the driveline.

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  17. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 16, image 1 de 1

    • Remove the snap ring washer.

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  18. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 17, image 1 de 1

    • Use a 1/2 inch socket to remove the driveline bearing retaining bolt.

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  19. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 18, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 18, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 18, image 3 de 3

    • Firmly pull the driveline bearing away from the mower.

    • This bearing is holding the driveline in place, so some components may shift around during removal.

    • This may require some force.

    • Repeat the last nine steps for the right side of the mower, starting with removing the right wheel. Once complete, continue to the next step.

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  20. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the height adjustment lever: étape 19, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the height adjustment lever: étape 19, image 2 de 2

    • Remove the height adjustment lever from the left side of the mower.

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  21. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the axle: étape 20, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the axle: étape 20, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Remove the axle: étape 20, image 3 de 3

    • Holding the left end of the axle with your left hand and the right end of the driveline with your right hand, firmly pull them in opposite directions—the axle to the left, and the driveline to the right.

    • While maintaining these opposing forces, squeeze both axles together.

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  22. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 21, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 21, image 2 de 2

    • With the axle being pulled left and driveline being pulled right, force the left end of the axle out and down, around the end of the driveline.

    • If done correctly, there will be enough of a gap for the axle to clear the end of the driveline and drop down towards the work surface.

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  23. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 22, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 22, image 2 de 2

    • Remove the axle.

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  24. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the new axle over the driveline: étape 23, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the new axle over the driveline: étape 23, image 2 de 2

    • With the new axle hooked over the protruding end of the driveline on the right side of the device, pull the axle left, up, and over the driveline on the left side.

    • You may need to grip both rods together in order to pull the axle into position.

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  25. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the height adjustment lever: étape 24, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the height adjustment lever: étape 24, image 2 de 2

    • Place the height adjustment lever into position.

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  26. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Reinstall left and right side axle components: étape 25, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Reinstall left and right side axle components: étape 25, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Reinstall left and right side axle components: étape 25, image 3 de 3

    • Push the driveline bearing onto the protruding end of the driveline.

    • Align the height adjustment lever and driveline bearing bolt with the hole on the axle.

    • Align the components such that the height adjustment lever falls into the "A" position.

    • Using a 1/2 inch socket, secure both in place with the driveline bearing bolt, but don't tighten it all the way yet.

    • Install the right driveline bearing onto the right side of the mower, securing it in place with the 1/2 inch driveline bearing bolt.

    • Now, securely tighten both left and right side driveline bearing bolts

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  27. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the left side snap ring washer: étape 26, image 1 de 1

    • Install the snap ring washer on the driveline.

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  28. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the snap ring: étape 27, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the snap ring: étape 27, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the snap ring: étape 27, image 3 de 3

    • With another person pushing on the driveline from the other side, use snap ring pliers to install the snap ring into the groove on the driveline.

    • This can be difficult, and can require a fair amount of force.

    • The snap ring groove on the left side of the driveline will not be visible until the driveline is pushed far enough left.

    • You may need to push back against the axle during this process so the height adjustment lever and driveline bearing stay against the frame.

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  29. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the drive gears: étape 28, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the drive gears: étape 28, image 2 de 2

    • Install the two drive gears, one on each side of the axle.

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  30. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 29, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 29, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 29, image 3 de 3

    • Secure both gears to the driveline with a retaining pin.

    • If this pin is worn out or doesn't lock into place, replace it.

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  31. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the dust covers: étape 30, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the dust covers: étape 30, image 2 de 2

    • Install both dust covers, one on either side of the axle.

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  32. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the wheels: étape 31, image 1 de 2 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Install the wheels: étape 31, image 2 de 2

    • Place both wheels back onto the axle, aligning the drive gear teeth with the gears inside the wheels.

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  33. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement: étape 32, image 1 de 1

    • Use a 9/16 inch socket to reinstall both wheel nuts, securing the wheels to the axle.

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  34. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Flip the mower onto its side: étape 33, image 1 de 1

    • Flip the mower on its side, blades facing out.

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  35. Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Hook the spring onto the axle: étape 34, image 1 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Hook the spring onto the axle: étape 34, image 2 de 3 Toro Walk Behind Mowers 21199HD 2018 Rear Axle Replacement, Hook the spring onto the axle: étape 34, image 3 de 3

    • Hook the height adjustment spring back onto the axle.

    • This will be difficult if the height adjustment lever isn't in the "A" position.

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Carsten Frauenheim

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