How to change blades on a SCAG Cheetah zero turn

Description

A diy, step by step video demonstration on how to replace or change lawn mower blades on a SCAG Cheetah zero turn with a 61 inch deck.


Transcript

In this video we will try to change the blades in a SCAG Cheetah.

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This mower includes an electric PTO clutch to engage the blades.

For safety you may begin this procedure by disconnecting the negative cable from the battery and disconnecting the spark plug wire from the spark plug

As seen a wooden block was set at the bottom of the deck to hold the blade in place.

The 61 inch deck on the SCAG Cheetah is unique from other decks on other lawn mowers and that to remove the blade you start by removing the bolt from the pulley at the top of the deck.

The fastener at the bolt at the top of the pulley was first removed with the breaker bar, then a socket and ratchet.

This process was then repeated for the two other blades on the deck.

The vehicle brake and wood block on the rear tire was set to prevent the vehicle from moving.

Jack and jack stands were then used to lift the deck up to allow access to the bolts holding the blades to be removed.

WD-40 was helped to loosen the hardware that did not fall on its own.

Some of the hardware required additional effort to separate the individual pieces.

With the blades removed we can compare the old with the new.

Aside from the damage mentioned the old blades had normal wear and a few nicks at the cutting edge.

Mulching style blades were selected with consideration to terrain that this mower operates at.

The hardware pieces were installed in addition to new blades onto the bolt in preparation for reinstallation.

The bolt was set into position from the bottom of the mower deck.

Once in position at the top of the pulley the fastener was then reattached beginning with hand tightening.

A socket and ratchet were then used to continue the process of tightening the fastener.

A torque wrench was then used to conclude the process of tightening the fastener.

This process was then repeated for the two other blades on the deck.

The hardware pieces were installed in addition to new blades onto the bolt in preparation for reinstallation.

The bolt was set into position from the bottom of the mower deck.

Once in position at the top of the pulley the fastener was then reattached beginning with hand tightening.

A torque wrench was then used to conclude the process of tightening the fastener.

The hardware pieces were installed in addition to new blades onto the bolt in preparation for reinstallation.

The bolt was set into position from the bottom of the mower deck.

Once in position at the top of the pulley the fastener was then reattached beginning with hand tightening.

A torque wrench was then used to conclude the process of tightening the fastener.

The deck pulley cover was then reinstalled.

Every blade change should include a check of the blade part number.

The blades on the SCAG Cheetah in this video were torqued to 75 lb ft (101 nm).

In this video:
Oregon 96-347 (3 Pack) Scag Mulcher Blade 21-Inch:
https://amzn.to/2VqoDcs

SCAG Cheetah zero turn with a 61 inch deck:
482881 Cutter Blade, 21”

SCAG Cheetah zero turn with a 72 inch deck:
482882 Cutter Blade, 24-1/2”


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Disclaimer:

This video is for demonstration and entertainment purposes only. All viewers must take responsibility for their own choices and actions. The creators of this video and anyone recorded in the video are not responsible and do not assume any responsibility for all purchases, damage, injury, death or dismemberment resulting from the performance of any operation in this video. Use the proper parts, specifications and safety procedures for your own application.

11/26/2020 | How to change blades on a SCAG Cheetah zero turn