Medium
1-2 hours
This is a genuine manufacturer approved replacement ground drive idler pulley designed for lawn tractors. The purpose of this pulley is to apply tension to the belt. It is made out of plastic with metal and it is sold individually.
Pulley 690409MA
OEM part for: Briggs and Stratton, Murray, Snapper
Part Number: 690409MA
$21.18
In Stock
Ships within 1 business day 
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Product Description ?
- 3.5" outer 3/4" inner 1" thick
- Classification: Part
- Weight: 0.20 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Pulley will fit the following 843 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Murray
Snapper
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Tractor Parts
- Lawn Mower Parts
This part replaces obsolete part #: 725177, MU690409MA
Customer Part Reviews ?
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Replacement of tension pulley for riding mower
Part received promptly and was an exact match. Easy to install and works perfectly. I liked the diagram picture showing the parts needed, easy to find parts needed. I will continue to use your service whenever I need to order replacement parts. This is the second time I've ordered parts from you and am completely satisfied.
Thank you.
Joe
Guest -
August 10, 2023
Verified Purchase
Lawn tractor main drive tension pulley
I'm sure glad I didn't throw out the old one, as I needed the the imbedded bushing for the new one to work. Installed the bushing and the pulley was good to go. Product came very fast, in excellent condition, fit and use were perfect!
Robert -
November 14, 2022
Verified Purchase
Great replacement part
I needed this replacement part to get my Murray rider mower operating once again. The old pulley looked like it had been chewed on by a dog. The replacement job went well as the new pulley was exactly as needed. Thanks ereplacementparts.com!
Guest -
October 13, 2022
Verified Purchase
Easy fix when replacing the drive belt one bolt replace the bushing and reinstall
Part was in stock shipping was quick and no defects everything went fine
James -
January 28, 2022
Verified Purchase
Right part
Right part made possible with provided parts view.
William -
May 18, 2020
Verified Purchase
Perfect fit
Old pulley broke and this one was exact size and fit great. Been ordering parts from eReplacementParts.com for years and i always get quality, exact fit parts with quick shipping.
Guest -
April 9, 2020
Verified Purchase
The parts I needed when I needed them.
Decent price and good service. Received my order sooner than I thought I would, pleasantly surprised.
Guest -
September 5, 2019
Verified Purchase
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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.
Idler pulley was worn and belt was cracked
Jose - July 8, 2016
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set
Parts Used
Removed old idler pulley
Removed deck and steering wheel
Removed old drive belt
Snaked new drive belt in and tightened new idler pulley
Removed deck and steering wheel
Removed old drive belt
Snaked new drive belt in and tightened new idler pulley
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Drive Belt Broke on Lawn Tractor
Raul - June 11, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Hard
Time
More than 2 hours
Tools Used
Pliers, Socket set, Wrench Set, Adjustable Wrench, Breaker Bar
Raised Tractor 3 feet above ground to work on it.
Removed old belt making sure to notice it's path so I could install the new one.
I took pictures to help with my memory!
Reinstalled new drive belt and plastic pulley (which was broken) but had to loosen rear pulley guides on all pulleys.
Had to unbolt and lift up Steering wheel shaft in order to install new belt properly.
Had to unhook link clip near rear pulley to get new belt on properly.
Tightened everything back in place and no more problems.
Removed old belt making sure to notice it's path so I could install the new one.
I took pictures to help with my memory!
Reinstalled new drive belt and plastic pulley (which was broken) but had to loosen rear pulley guides on all pulleys.
Had to unbolt and lift up Steering wheel shaft in order to install new belt properly.
Had to unhook link clip near rear pulley to get new belt on properly.
Tightened everything back in place and no more problems.
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Belt tensioner pulley broke
Dave - February 28, 2017
👍 4 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Hydraulic press
Parts Used
Removed old pulley. Ordered replacement pulley. New pulley required me to remove a spacer from the center of the bearing from the old pulley and install it on the new one. This would have been a much easier repair if the new pulley matched the old one identically.
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The Drive Belt Tension Pullies Up Under The Chasis Wore Out
A - August 12, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Wrench Set
Parts Used
Removed the worn tension pullies - one was completely worn out, the other two were still usable, but replaced all 3 to avoid a repeat repair -
Thanks to eReplacementParts.com for having the right parts and for timely delivery -
Thanks to eReplacementParts.com for having the right parts and for timely delivery -
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Drive belt was worn out. Cracked in all places
TONY - July 9, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
1-2 hours
Tools Used
Socket set, Wrench Set
Parts Used
First thing you need to do is remove the battery. Than remove mower deck. Not hard to do. Only belt that needs to be removed at this time is the deck belt off the pulley. Leave the rest of that belt in place. Pull deck away from mower so you can get underneath the mower. Now take the battery carrier out so you can see the transaxle pulley. 2 bolts you can see that you can loosen so it will make it easy to remove drive belt from pulley. The 2 bolts are belt guides. Now get underneath your mower and slowly pull the belt out. At this time you can remove the idler pulley if you wish. Belt is out, put new one in and new idler pulley.
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Drive belt became loose and wouldn't move
Darryl - June 8, 2016
👍 3 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wrench Set
With some common sense and the assembly/parts diagrams that Replacement Parts provided made the job very simple. I was stumped a little and had to refer back to them while making the repairs. They are the same diagrams I used to order my parts. What I am about to say is hard to believe and almost extinct these days. The procedure to find your replacement parts was very simple to follow. Ordering was simple. Payment options were simple. The shipment had plenty of choices as far as how fast you wanted or needed it. It arrived when it was supposed to. And here was the BIG surprise that FLOORED me, there's always a catch. EVERYTHING IN MY ORDER WAS CORRECT!!!!!!!! I will definitely give Replacement Parts all of my future business and HIGHLY recommend them, in fact, I already have. THANK YOU, Replacement Parts! I am mowing away!
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Mower would bind and squeal, the belt no speed control,could not shift.
William - May 7, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set, voly meeter,krimpers
Belts that were on the machine when I got it were B belts normal V type, and what would happen the speed increaser would bind and the mower would lock up. ordered the factory Murray belts and pulleys and come to find out the belts were B type but did not have a V shape more flat. Installed the new belts and pulleys problem solved runs great. Remember always use the factory or trusted after market parts, saves lots of tine.
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Bearings bad and worn out plastic.
David - October 14, 2022
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Adjustable Wrench
Removed deck to replace parts.
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Trans axle peerless 206 502C
LARRY - June 4, 2021
Tool Type
Lawn Tractor
Difficulty
Easy
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set
Parts Used
Had a used trans axle from another used tractor that I resealed two seals around axles and one around disk brake re-gasket with rubberized gasket materials around outside body of trans axle. Removed existing bad trans axle with resealed used trans axle and installed new drive Belt with Murray 37 X 87 and removed cracked adjustment tension pulley with new one and installed a new deck belt 37 X 88 on Murray 42514X8A lawn tractor. The entire job took about four hours but the only problem that remained is the final adjustment to the shift gear lever that have a fine setting between natural and reversed. Also installed.two new belt guide bolts and.nuts.
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previous idle pulley's barring went bad
Diane - June 12, 2019
Tool Type
Lawn Tractor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Parts Used
Had to drop and set aside the mower housing to remove the original idle pulley before getting the new one in place, that was the easiest part. Which consisted of using one wrench for one nut. I love eRlacement and refer them to everyone that cares to listen. Making this another successful DIY project ,,, YEAH !!!!!
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
