Part Location Diagram of 753-08171 MTD Lawn Mower Idler Pulley
See part A46 in the diagram
( Grid squares measure 1x1 inch )

Lawn Mower Idler Pulley 753-08171

Manufactured by:
MTD
ERP Number:
ERP11812944
Part Number:
753-08171
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(30 rated repairs) ?

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Product Description

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Genuine OEM Idler Mandrel Pulley Kit which includes: pulley, spacer/washer and a bushing. This part spins the blade on the mower deck of the tractor. The bearing for this pulley is not sold separately. If part is damaged or the bearing inside of it is not spinning freely then this part needs to be replaced.

Troubleshooting

This part works with the following brands:
  • MTD
  • Cub Cadet
  • Craftsman
  • Troy-Bilt
  • Yard Man
  • Yard Machines
  • Murray
  • Bolens
  • Toro
  • Husky
  • Poulan
This part works with the following products:
  • Lawn Tractor
  • Lawn Mower
Part# 753-08171 replaces these:
753-08171, 756-04129, 756-04129B, 756-04129C, 956-04129, YS-756-04129,

Customer Part Reviews

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4.9
Average Rating (out of 5):
★★★★★
★★★★★
(18 Reviews)
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Questions & Answers

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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

A Bit Difficult 

30 - 60 mins 

(30 rated repairs) ?
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Lawn Tractor Idler Pulley on the deck came off!

Rick from Spokane Valley, Washington

16 of 16 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
More than 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Parts Used:
753-08171, 783-06368A-0637
Raised tractor and put it on jack stands. Took a lot of pictures. Removed drive belt from the main drive pulley. Dropped the deck to the ground. Took more pictures. Removed what was left of the Idler Pulley. Cleaned the deck and other pulley\'s and deck parts. Viewed eReplacement Parts diagram and assembled the Idler Pulley onto t he deck. Put the deck back onto the tractor. Fired up the tractor and checked for proper operation. Everything worked fine (so far).
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Deck was not working, needed new pullies, belts and blades.

Scott from Orlando, Florida

7 of 7 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
More than 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
1. Removed the old belts.
2. Removed the deck.
3. Replaced the pulleys and then the belts.
4. Reinstalled the deck.
5. Replaced the belts.
6. Tested, cut grass.
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Pulley bolt broke losing pulley, washer, pulley and broken belt

William from Red Springs, North Carolina

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Pretty straight forward. Clean deck and install bolt,washer, pulley, and nut. Install new belt
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Pulley broke

Tim from Lubbock, Texas

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench (Adjustable), Wrench set
Parts Used:
753-08171, 954-04062
Removed the deck from the mower
Removed old pulley put new one on and replaced belt
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Broken belt and bent idler pulley and bent belt keeper

Ron from Winston Salem, North Carolina

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench set
Remove lock nut and bent idler pulley and bent belt keeper replaced all with new parts put new belts on job finished
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Damaged Pulley

Rick from Mason City, Iowa

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench set
Parts Used:
753-08171
Removed the deck from the mower, replaced the assembly, put on new pulley put belt on, mounted mower deck back on mower.
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Bearings went out in idler pulley

Daniel from Umatilla, Florida

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench set
Parts Used:
753-08171
Took the deck off the mower. Installed both idlers. Sharpen blades. Reinstalled. Mowed my yard.
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Belts were getting eaten; 2 in one summer

Ruth from Suffolk, Virginia

3 of 3 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Socket set
Parts Used:
753-08171, 714-04040
I followed the instructions on the video by ereplacement after identifying the fact one of my deck pulleys bearing was no longer turning properly.
1. Remove deck pins
2. Release belt (which was missing in my case) and take the deck from under the tractor.
3. Loosen the bolt nut from the top of the pulley to remove (soc ket on top, box wrench under- neath
4. Remove the washer, and pulley, bearing housing, then replace with the new pulley and bearing housing. Hint: put the belt around the pulley before replacing the pulley on the bolt so that they fit into the pulley guard housing, otherwise you will have to loosen it again to put the new belt on.
5. Tighten the nut back on the pulley bolt, check to make sure it is flat and turns easily.
6. Loosen the other pulley and place belt around pulley circuit per deck requirements, of the mower.
7. Re-install the deck to the tractor.
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V-belt was worn out/stretched and the idler pulley was bent and had jagged edges

Harry from Lagrange, Kentucky

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set, Wrench set
Parts Used:
753-08171, 954-04062
1. Removed deck from the mower for easier work space.
2. Removed idler pulley and v-belt.
3. Installed the new idler pulley and v-belt to the mounting arm.
4. Installed the deck to the mower, checked all connections, leveled the deck per the instructions.
5. Started and tested in a safe area away from the house and any other persons.
6. The parts worked great, operates like a new mower.
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idler pulley bearing wore out, and eventually the flange lock nut worked it\'s way off

Tony from Memphis, Tennessee

2 of 2 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Socket set, Wrench set
Parts Used:
753-08171, 712-04065, 710-3144
1. Insert bolt from the bottom of the mower deck and through two guards
2. Place spacer, pulley, and belt
3. Place washer and and flange lock nut
4. Tighten flange lock nut with ratchet socket on the bottom and open end wrench on top
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Model Cross Reference

This part works with the following models:
ERP Number: ERP11812944
Manufacturer Part Number: 753-08171
Brand Model Number Description
MTD 12A-764M Lawn Mower - MTD Lawn Mower Model 12A-764M (12A764M, 12A 764M) Parts
MTD 12A-764M010 Lawn Mower - MTD Lawn Mower Model 12A-764M010 (12A764M010, 12A 764M010) Parts
MTD 12A-764M099 Lawn Mower - MTD Lawn Mower Model 12A-764M099/2009 (12A764M099/2009, 12A 764M099/2009) Parts
MTD 12A-764M799 Lawn Mower - MTD Lawn Mower Model 12A-764M799 (12A764M799, 12A 764M799) Parts
Cub Cadet 12A-764Q Lawn Mower - Cub Cadet Lawn Mower Model 12A-764Q/2013 (12A764Q/2013, 12A 764Q/2013) Parts
Cub Cadet 12A-764Q010 Lawn Mower - Cub Cadet Lawn Mower Model 12A-764Q010/2011 (12A764Q010/2011, 12A 764Q010/2011) Parts
Cub Cadet 12A-764Q056 Lawn Mower - Cub Cadet Lawn Mower Model 12A-764Q056/2011 (12A764Q056/2011, 12A 764Q056/2011) Parts
MTD 12A-764R299 Lawn Mower - MTD Lawn Mower Model 12A-764R299 (12A764R299, 12A 764R299) Parts
Troy-Bilt 12AE763Z011 Lawn Mower - Tbwc33xp 12ae763z011 (2014) 12ae763z011 (2014)
MTD 12AE764H099 Lawn Mower - MTD Lawn Mower Model 12AE764H099/2009 Parts
MTD 12AE764N Lawn Mower - MTD Lawn Mower Model 12AE764N Parts
MTD 12AE764N009 Lawn Mower - MTD Lawn Mower Model 12AE764N009 Parts
Cub Cadet 12AE764N010 Lawn Mower - Cub Cadet Lawn Mower Model 12AE764N010/2008 Parts
MTD 12AE764N056 Lawn Mower - MTD Lawn Mower Model 12AE764N056 Parts
Cub Cadet 12AE764N709 Lawn Mower - Cub Cadet Lawn Mower Model 12AE764N709/2007 Parts
Cub Cadet 12AE764N710 Lawn Mower - Cub Cadet Lawn Mower Model 12AE764N710/2007 Parts
Cub Cadet 12AE764N756 Lawn Mower - Cub Cadet Lawn Mower Model 12AE764N756/2007 Parts
MTD 12AE764Y099 Lawn Mower - MTD Lawn Mower Model 12AE764Y099 Parts
Cub Cadet 12AE76JU010 Lawn Mower - Cub Cadet Lawn Mower Model 12AE76JU010/2011 Parts
Cub Cadet 13A-2C7P710 Lawn Mower - Cub Cadet Lawn Mower Model 13A-2C7P710 (13A2C7P710, 13A 2C7P710) Parts
MTD 13A1760F000 Lawn Tractor - Lawn Tractor
MTD 13A1760F002 Lawn Tractor - Lawn Tractor
MTD 13A1760F009 Lawn Tractor - Lawn Tractor
MTD 13A1760F016 Lawn Tractor - Lawn Tractor
MTD 13A1760F019 Lawn Tractor - Lawn Tractor
MTD 13A1760F022 Lawn Tractor - Lawn Tractor
MTD 13A1760F026 Lawn Tractor - Lawn Tractor
MTD 13A1760F029 Lawn Tractor - Lawn Tractor
MTD 13A1760F033 Lawn Tractor - Lawn Tractor
MTD 13A1760F054 Lawn Tractor - Lawn Tractor