Medium
30-60 minutes
Original Manufacturer Approved replacement Mandrell/Jackshaft Housing Assembly used on Lawn Tractors/Mowers. Includes housing, shaft assembly, bearing, and nut. The mounting holes on the Mandrel are not threaded. But the bolts that are used to secure the mandrel to the deck are self tapping. The Mandrel shaft goes through the deck and the pulleys are attached to them, then the belt that drives the mandrels is placed in the pulleys.
Jackshaft Hsng Assembly 1001200MA
OEM part for: Murray
Part Number: 1001200MA
$75.91
In Stock
Ships within 1 business day 
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Compatibility
This Jackshaft Hsng Assembly will fit the following 691 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 691 matching models.
Murray
Show More Compatible Models691 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Murray
- Snapper
This item works with the following types of products:
- Lawn Mower
- Lawn Tractor
This part replaces obsolete part #: 726958, 726959, 721447, 1001200, 1001194MA
Customer Part Reviews ?
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Installed new part and off and running.
Repair part came quick, and was easy to install.
Guest -
June 7, 2023
Verified Purchase
Right part!
The part fit as described arrived in good condition. Thanks!
Guest -
October 20, 2020
Verified Purchase
Easy repair
The parts were correct and fit my mower perfect. My mower is 17 years old and should last me even longer now, Thanks!!!
Guest -
November 5, 2019
Verified Purchase
Great service...every time!
I love the ease of finding what I need on their website, and they get it out so quick!
Guest -
October 6, 2019
Verified Purchase
Great
Part arrived early and worked as it should..
Walter -
July 2, 2019
Verified Purchase
easy repair
the part was as ordered it was a quick and easy repair and the part was here quicker than i thought it would be
John -
May 4, 2021
Verified Purchase
It was an easy replacement till.....
Love ereplacement parts don't get me wrong but Briggs and stratton smh I'm disappointed the ball bearings inside of the housing were pressed incorrectly! That will cause a problem with the shaft for the blades! This is my 4th one! Briggs and stratton you might get sued on this one! This comment does not affect ereplacement parts and their services! Ereplacement part it would be nice to send me a promo code sometime in the near future!
Charles -
June 27, 2023
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.
Mandrell housing cracked
Russell - May 28, 2016
👍 16 of 17 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Adjustable Wrench
Parts Used
Remove the blade, remove the nut from the jackshaft pulley. Remove the 5 bolts from the cracked mandrel. Install the new mandrel. (The new mandrel is not threaded, but the bolts to mount it are self tapping bolts) Place the pulley on the mandrel shaft and tighten the nut. Then install the blade. If you feel like you need more space and don't want to scrape your fingers arms and hands you can remove the deck to do this repair.
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Bearing failure on one of the two blades
Clark - August 15, 2016
👍 9 of 10 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Adjustable Wrench, Lathe
Parts Used
1. Remove cutting deck from Murray tractor mower.
2. Remove the blade.
3. Remove the 5 bolts holding the mandrel to the deck. These are self-tapping bolts and extremely tight requiring a two-foot pipe extension on my socket wrench handle.
4. With the mandrel free, clamp the pulley in a vise and remove the top nut, also extremely tight.
5. The shaft of the new mandrel was not a perfect fit. I had to machine some spacers from the old parts to reattach the pulley and blade.
6. Reattach the mandrel to the deck. The old self-tapping bolts were in bad shape so I bought 5 new 5/16 bolts with locking nuts.
7. Replace the blade and reinstall the deck to the tractor.
2. Remove the blade.
3. Remove the 5 bolts holding the mandrel to the deck. These are self-tapping bolts and extremely tight requiring a two-foot pipe extension on my socket wrench handle.
4. With the mandrel free, clamp the pulley in a vise and remove the top nut, also extremely tight.
5. The shaft of the new mandrel was not a perfect fit. I had to machine some spacers from the old parts to reattach the pulley and blade.
6. Reattach the mandrel to the deck. The old self-tapping bolts were in bad shape so I bought 5 new 5/16 bolts with locking nuts.
7. Replace the blade and reinstall the deck to the tractor.
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One of the old mandrell housings had cracked
Stephen - May 4, 2016
👍 7 of 9 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Adjustable Wrench
Parts Used
It was very simple. I disconnected the belt, removed the blade, and removed five bolts. I put the new mandrell in place, and reused/reinserted the old five bolts, blade and belt. The diagrams on line were very helpful in seeing how they went together.
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Jackshaft Housing Assembly (1001200MA)
Daniel - August 9, 2017
👍 5 of 6 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, vise to remove blade
Parts Used
1. Removed belt from pulley attached to the Jackshaft Housing Assembly.
2. Removed pulley on upper Jackshaft Housing Assembly.
3. Remove 5 bolts holding Jackshaft Housing Assembly onto the deck.
4. Removed blade from lower Jackshaft Housing Assembly.
5. Greased new part
6. Reversed order to reinstall
2. Removed pulley on upper Jackshaft Housing Assembly.
3. Remove 5 bolts holding Jackshaft Housing Assembly onto the deck.
4. Removed blade from lower Jackshaft Housing Assembly.
5. Greased new part
6. Reversed order to reinstall
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Jackshaft housings broke
Larry - April 19, 2018
👍 3 of 3 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Pliers, Socket set, Adjustable Wrench, Air wrench
Parts Used
Used air ratchet to take off & replace both jackshaft housing assemblies & blades.
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Jack shaft frozen
Richard - May 13, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Wrench Set, Wire brush to remove dirt
Bought a mower lift to elevate mower this was priceless
cleaned area, removed blade, removed bolts holding assembly, put belt out of way, greased new jack assembly prior to installing, reinstalled jack assembly, replaced blade, replaced belt, lowered mower.
cleaned area, removed blade, removed bolts holding assembly, put belt out of way, greased new jack assembly prior to installing, reinstalled jack assembly, replaced blade, replaced belt, lowered mower.
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Broken Mandrell shaft housing, and a bad exhaust manifold gasket.
Clifton - June 17, 2016
👍 2 of 3 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Nutdriver
I removed the deck from the mower. Remove the blade bolt and washers and the blade. Removed the bolt on the jack shaft pulley, remove the pulley. Then removed the five bolts holding the mandrel on. The old mandrel fell right off. Lined up the new mandrel to the bolt holes on the deck and tighten them in cross pattern, until the were tight. The mandrel is not threaded, but the bolts are self threading. I then attached the pulley to the mandrel shaft and tightened the nut. Attached the blade then attached the deck back onto the mower. I then removed the muffler and the muffler adapter and replaced the gaskets.
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jackshaft broke
Byron - October 26, 2023
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Power Drill, Socket set, Wrench Set
Parts Used
Remove old jackshaft and blade and pulley. Replace new jackshaft, blade and pulley. realign belt on pulleys . Easy repair.
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Pulley warped and jackshaft spline busted.
James - November 3, 2021
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, None
Replaced jackshaft assembly put blade on before attaching thru deck.. very easy. Replaced pulley for blade belt. Easiest ever.
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I ran over a stump & cracked the housing.
Mr. - July 9, 2020
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Impact wrench
Parts Used
I jacked up the front of the tractor, lowered the deck all the way down. Used my impact wrench to remove the pulley nut, then used it to remove the retaining bolts. 1 wrung off so I used a 5/16 X 2" bolt, 2 flat washers & 1 lock washer in the open hole. The other bolts I was able to reuse as they were self-tapping bolts. I actually ran them through the housing first after spraying them with WD-40. They made their own threads and I was able to bolts it back together. I used my impact wrench to install the blade from underneath. Put the belt back on, raised the deck, lowered it back down and went out & mowed the grass.
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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.
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