50" Deck Rebuild Kit for Toro TimeCutter Exmark Quest SS5000 MX5000 119-8820

7-piece 50" deck rebuild kit for select Toro TimeCutter and Exmark Quest zero-turn mowers. Includes 3 spindle assemblies, 1 deck drive belt and 3 flat idler pulleys — ideal when your existing mower blades are still in good condition and do not need replacement.

Designed for compatible 50" mower decks using the Toro / Exmark 121-0751 spindle family, 119-8820 deck belt and 106-2175 / 132-9420 flat idler pulley family.

What Is Included

Blades are not included with 80-DK-022.

OEM & Replacement Part Number Cross-Reference

Spindle Assembly – 80-12-033-N
Replaces / references Toro and Exmark:
117-0751, 117-7267, 117-7268, 117-7439, 120-6234, 121-0751, 121-9107, 139-3214

Spindle Specifications:
Approximately 5-1/2" height • Approximately 6-1/4" OD • Includes pulley nut • Top-mounted grease fitting

139-3214 is a current replacement reference for earlier spindle assemblies in this family.

Deck Drive Belt – 80-90-959
Replaces / references:
Toro 119-8820, 120-3892
Exmark 119-8820
Rotary 14733
Stens 265-467
Oregon 15-143

Belt Specifications:
Approximately 1/2" wide × 141-1/2" long • Covered aramid-cord construction

Flat Idler Pulley – 80-91-016
Replaces / references:
Toro 106-2175, 132-9420
Exmark 106-2175, 132-9420

Idler Pulley Specifications:
Approximately 3/8" ID • 4-1/8" OD • 1-1/2" height • 3 pulleys included

Compatible Toro TimeCutter 50" Models

TimeCutter SS Series

SS5000
Model numbers: 74630, 74631, 74637, 74730, 74731, 74732

SS5035
Model number: 74635

SS5060
Model numbers: 74632, 74638

TimeCutter MX Series

MX5000
Model numbers include: 74772, 74773, 74774, 74775

MX5025
Model numbers include: 74727, 74776

MX5050
Model numbers: 74770, 74771

MX5060
Model numbers: 74641, 74643

TimeCutter SW / SWX Series

SW5000
Known applications include: 74680, 74790

SWX5050
Model numbers: 74797, 74798

Additional Toro 50" Applications

The same spindle, belt and idler pulley architecture is also associated with additional select Toro 50" applications, including:

74387, 74395, 74660, 74661, 74688, 74768, 74778, 74795, 74840

These additional applications include members of the ZS5000 / ZS5000TF, MX5075 and related 50" deck families. Because Toro configurations can vary by production year and serial number, verify your original spindle, belt and idler references before ordering.

Compatible Exmark Quest 50" Models

The same spindle, belt and idler pulley configuration is also used on select Exmark Quest E-Series, S-Series and related Quest 50" zero-turn mowers.

Known applications in this component family include:

QSS708GEM50200
QSS725GKC50200
QTE691KA501
QTE708GEM50200
QTE735KC501
QTE735KC502
QTS691KA502
QTS708GEM50200
QTS725GKC50200
QTS735KC502
QZS691CKA50200
QZS708GEM50200

Exmark Quest configurations may vary by model year and serial number. Confirm that your mower uses the 121-0751 spindle family, 119-8820 deck belt and 106-2175 / 132-9420 flat idler pulley family before ordering.

Choose the Right 50" Rebuild Kit

If your idler pulleys are still in good condition but you need new blades, see our 80-DK-023 Deck Rebuild Kit, which includes 3 spindles, 3 high-lift blades and the deck belt.

How to Confirm This Is the Correct Kit

This kit is intended for compatible 50" decks using all three of the following component families:

• Spindle: 121-0751 / 117-0751 / 117-7267 / 117-7268 / 117-7439 / 139-3214 family
• Deck Belt: 119-8820 / 120-3892 family
• Flat Idler: 106-2175 / 132-9420 family

If these references match the original components used on your 50" mower deck, this is the corresponding spindle, belt and idler rebuild configuration.

Important Fitment Information

Toro TimeCutter and Exmark Quest mowers were produced with multiple 50" deck configurations. A 50" cutting width alone does not confirm compatibility.

Older Toro TimeCutter Z-Series and other 50" configurations can use different spindle assemblies and belt systems. Always verify your complete mower model number and original component references before ordering.

Aftermarket replacement parts. Toro, TimeCutter, Exmark, Quest and OEM part numbers are used for identification and compatibility reference purposes only.