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9303931-1-M-MTD-756-0643A-Trimmer Flat Idler Pulley
Part Location Diagram of 756-0643A MTD Trimmer Flat Idler Pulley
See part E74 in the diagram
9303931-1-S-MTD-756-0643A-Trimmer Flat Idler Pulley 360 view
( Grid squares measure 1x1 inch )
9303931-1-S-MTD-756-0643A-Trimmer Flat Idler Pulley 9303931-1-S-MTD-756-0643A-Trimmer Flat Idler Pulley 360 view
Part Location Diagram of 756-0643A MTD Trimmer Flat Idler Pulley

Trimmer Flat Idler Pulley 756-0643A

Manufactured by:
MTD
ERP Number:
ERP9303931
Part Number:
756-0643A
Original Equipment Manufacturer ?
$59.31
★★★★★
★★★★★
2 Reviews
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

More than 2 hours 

(2 rated repairs) ?

Does this part fit my model?

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Troubleshooting Reviews Repair Instructions Model Cross Reference

Troubleshooting

This part works with the following brands:
  • MTD
  • Yard Machines
  • Yard Man
  • Husky
  • Ryobi
This part works with the following products:
  • Lawn Tractor
  • Lawn Mower
Part# 756-0643A replaces these:
756-0437, 756-0643, 956-0437,
★

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(2 Reviews)
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★★★★★
★★★★★
Idler pulley for transmission
This replacement part was better than the factory original: all metal painted steel and fit perfectly! Thanks!
Guest - September 16, 2019
Verified Purchase
★★★★★
★★★★★
It fit my mover perfectly and arrived on time.
It worked perfectly. Thanks =ƒæì.
Guest - June 24, 2022
Verified Purchase

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 

More than 2 hours 

(2 rated repairs) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Transmission belt broke

Dale from Richmond, Minnesota

7 of 7 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
More than 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Parts Used:
756-0643A, 954-0280A, 954-0370
Repaired worn tighter pulley and replaced both belts
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Transmission belt repeatably comes off of pully

David from Wooster, Ohio

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
More than 2 hours
Tools:
Screw drivers, Socket set, Wrench set
Parts Used:
756-0643A, 748-0234
1. Noticed cracking and poor condition of the transmission belt.
2. Purchased a similar non-OEM belt & installed it.
3. New belt more than once comes off the pully
4. Review the condition of the tensioner pully & components finding worn pully bearing & mounting plate.
5. Purchased pully assembly, mounting plate & b ushing.
6. Installed new parts & belt continues to come off.
7. Reviewed non- OEM-belt dimensions against worn belt finding that the new belt was 1/16GÇ¥ narrower at the wide section.
8. Removed the new belt and re-installed the original cracked & worn belt. That worn belt is still working through a complete lawn mowing experience. (Knock on wood). Lesson learned - bushings & bracket wear on the tensioner assembly was enough to throw the belt off. When it finally breaks I will bite the bullet and spend the money on an OEM belt that has the correct width.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP9303931
Manufacturer Part Number: 756-0643A
Brand Model Number Description
MTD 1057A850-0308 Lawn Tractor - Lawn Tractor
MTD 1105UP538 Lawn Tractor - Lawn Tractor
MTD 111-508R002 Lawn Tractor - Lawn Tractor
MTD 111-508R013 Lawn Tractor - Lawn Tractor
MTD 111-508R016 Lawn Tractor - Lawn Tractor
MTD 111-508R019 Lawn Tractor - Lawn Tractor
MTD 111-508R022 Lawn Tractor - Lawn Tractor
MTD 111-508R026 Lawn Tractor - Lawn Tractor
MTD 111-508R029 Lawn Tractor - Lawn Tractor
MTD 111-508R033 Lawn Tractor - Lawn Tractor
MTD 111-508R054 Lawn Tractor - Lawn Tractor
MTD 111-508R057 Lawn Tractor - Lawn Tractor
MTD 111-508R077 Lawn Tractor - Lawn Tractor
MTD 111-508R098 Lawn Tractor - Lawn Tractor
MTD 111-508R105 Lawn Tractor - Lawn Tractor
MTD 111-508R118 Lawn Tractor - Lawn Tractor
MTD 111-508R121 Lawn Tractor - Lawn Tractor
MTD 111-508R129 Lawn Tractor - Lawn Tractor
MTD 111-508R131 Lawn Tractor - Lawn Tractor
MTD 111-508R134 Lawn Tractor - Lawn Tractor
MTD 111-508R138 Lawn Tractor - Lawn Tractor
MTD 111-508R145 Lawn Tractor - Lawn Tractor
MTD 111-508R151 Lawn Tractor - Lawn Tractor
MTD 111-508R196 Lawn Tractor - Lawn Tractor
MTD 111-508R205 Lawn Tractor - Lawn Tractor
MTD 111-508R206 Lawn Tractor - Lawn Tractor
MTD 111-508R229 Lawn Tractor - Lawn Tractor
MTD 111-508R301 Lawn Tractor - Lawn Tractor
MTD 111-508R304 Lawn Tractor - Lawn Tractor
MTD 111-508R307 Lawn Tractor - Lawn Tractor
Trimmer Flat Idler Pulley
$ 59.31
In Stock
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Stock Status
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