Medium
30-60 minutes
This is a genuine Murray replacement part, it is sold individually.
The Jackshaft housing is connected to the drive shaft, which is connected to the pulley driven by the belts and engine.
Below the Jackshaft Housing, the blade adapter, blade, washers and blade nut are attached to the drive shaft.
The Jackshaft Housing does include the bearing and a zerk fitting.
Jackshaft Hsng 492574MA
OEM part for: Murray, Craftsman
Part Number: 492574MA
$56.62
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 1.60 lbs.
- Also Known As: Spindle Assembly, Spindle Housing
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Jackshaft Hsng will fit the following 618 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Murray
Craftsman
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Tractor Parts
- Lawn Mower Parts
- Trimmer Parts
This part replaces obsolete part #: 492574, 92574, SHOULD BE PART #4925, 090905, 92574MA, 90905, 49257MA, 692574MA, 092574MA, 090905MA, 092574
Customer Part Reviews ?
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Jackshaft Housing Assembly
works great the holes needed to be threaded thank goodness i had a tap to do it
Guest -
January 1, 2021
Verified Purchase
perfect fit quick shipping
exact replacement part. no fitting problems
Guest -
September 1, 2020
Verified Purchase
Easy to find the right parts
Our mower is w2 years old and now works better than it has in years
Guest -
July 13, 2020
Verified Purchase
right part the first time
part came faster then expected but had an extra part that came too . I did not order it called to return it and the lady that helped me was nice and found out how i was able to return the part with out a problem. will be be ordering a other one soon. happy costumer
Guest -
January 30, 2020
Verified Purchase
Perfect except
Found that part was not pre-tapped. Customers would need to clean all bolts/screws to remove buildup and use a 3/8-16 tap and die for best results. I have to assume new bolts/screws are self tapping but this could cause stripping if not careful using the old ones. P.S. on reason for purchase you need to add broken, damaged and missing to the list. I am just glad you guys have these parts for all us home grease monkey honey doers.
Guest -
November 12, 2019
Verified Purchase
Part is exact replacement for my riding lawn tractor
I found that the bolts that were used for the original jackshaft were of a type that would cut its own threads, hence all but one broke off, no problem, since I did not have any bolts of that type, other than the one that did not break, I just threaded to a standard bolt and snugged it down (soft metal for jackshaft) , put a lock and nut on the end and snugged down again. Just a note here to let the purchaser know you need to get the original bolts also. Good product am happy with it.
Guest -
August 29, 2019
Verified Purchase
Easy Repair
Bkade shaft housing, jack shaft, pulley, lock nut.
Guest -
June 3, 2019
Verified Purchase
Murray mower and the parts seem to be getting harder to find but the part I received fit perfectly
I have an older Murray mower and the parts seem to be getting harder to find but the part I received fit perfectly
Guest -
May 1, 2019
Verified Purchase
After bad experiences with your Fed-Ex deliveries in the past. I was pleasantly shocked to get my parts in a timely manner.
E
Carl -
May 29, 2019
Verified Purchase
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.
Jackshaft bearings R&R
Ronald - February 13, 2016
👍 15 of 18 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Pliers, Power Drill, Socket set, Wrench Set, Adjustable Wrench
Remove drive belt then remove the deck from the mower. Take the guards off, then the blade then the jack shaft housing and shaft. Install new one , don't forget to grease it an the others too.. Put all back together an your done.
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Bad mower deck bearing on Murray riding mower.
Lois - June 25, 2017
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
More than 2 hours
Tools Used
Socket set, Wrench Set, Impact driver, grease gun
Removed deck from mower.
Removed flange nut from top of pulley.
Removed pulley and spacer from jackshaft
Removed old mower blades..
Removed bolts holding mandrel housing and pulley guards.
Bolted on new mandrel housing.
Inserted new jackshaft and replaced pulley and spacer.
Greased new bearing in mandrel housing.
Replaced mower blades and tightened all nuts and bolts.
Placed deck back onto mower.
Removed flange nut from top of pulley.
Removed pulley and spacer from jackshaft
Removed old mower blades..
Removed bolts holding mandrel housing and pulley guards.
Bolted on new mandrel housing.
Inserted new jackshaft and replaced pulley and spacer.
Greased new bearing in mandrel housing.
Replaced mower blades and tightened all nuts and bolts.
Placed deck back onto mower.
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Mower deck was loud and blade was cutting uneven
David - June 27, 2016
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
Removed mower deck and replaced the jackshafts and pulleys. Pretty simple job, just takes time to get it done!
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Jack shaft was bent and housing was cracked
Jack - December 28, 2015
👍 5 of 5 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, 5/16\\
Parts Used
I removed jack shaft and the housing with socket wrenches and open end wrenches. Cleaned up the deck where the new parts would be installed. I had to tap the four holes in the new jack shaft housing,, because the four holes were not tapped. after tapping these four holes I mounted the housing on deck, and,, secured it with the four bolts from the previous installation. I slipped in the new jack shaft and mounted the drive pulley. I did grease up the new assembly as well.
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Noisy when blades were engaged. Excessive vibration from deck when engaged
Tony - June 22, 2016
👍 5 of 6 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Pliers, Socket set, Wrench Set, Adjustable Wrench, Had to use a pneumatic impact wrench to remove the spindles
Parts Used
Removed the mower deck from mower. The mandrel spindles simply unfolded from deck with help of impact wrench. Replaced in that order. Replaced pulleys. Be careful not to lose the spacer bushing for the idler pulley! The new mandrel spindle bolt holes were not threaded. But the weight that came out of them were tapered fine threaded bolts that will simply thread themselves into the aluminum mandrel spindles. I highly recommend going to a special you faster shop to replace all the bolts that go into the mandrel spindles. It was worth the extra $12!
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Hub(jackshaft) & spindle (shaft)broke
sam - May 2, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
15-30 minutes
Tools Used
Socket set
Remove the deck from the mower
Remove the the upper jack shaft nut and pulley
Unbolted old broken hub(jackshaft housing) & blade
I replaced bolts hub (jackshaft)& (shaft)spindle
Reinstalled blade & belt
Note: The jackshaft housing is not threaded but the bolts are self tapping
Mower has two blades, so I used other side as reference
Remove the the upper jack shaft nut and pulley
Unbolted old broken hub(jackshaft housing) & blade
I replaced bolts hub (jackshaft)& (shaft)spindle
Reinstalled blade & belt
Note: The jackshaft housing is not threaded but the bolts are self tapping
Mower has two blades, so I used other side as reference
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Jack-shilf bearings & shaft wore out, the blades were bad, all new parts purchased fit great.
roy - August 18, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Breaker Bar for all Nuts / Screws
I used my 2 ton engine lift to raise the lawn tractor mower front end high enough to do the repair job easily. 3 of 5 screws attaching jack-shaft to housing broke. Could not remove the spacer from old main shaft to replace with new shaft. Hardware store for new screws, I had metal tubing on hand to make a new spacer. This old machine is working again.
Thanks, for having all the parts I needed.
Thanks, for having all the parts I needed.
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Both blade shafts were bent and bearings needed replacing.
Kent - June 14, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Pneumatic impact wrench
1. Removed the cutting deck from the mower.
2. Used an impact wrench to dis-assemble and remove the components.
3. Replaced the upper pulleys, the spindle shafts, the shaft housings (mandrills) and the cutting blades.
4. Reassembled the components.
5. Replaced the cutting deck.
2. Used an impact wrench to dis-assemble and remove the components.
3. Replaced the upper pulleys, the spindle shafts, the shaft housings (mandrills) and the cutting blades.
4. Reassembled the components.
5. Replaced the cutting deck.
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The jackshaft housing broke in half.
Gary - June 3, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Grease gun
Parts Used
#1 Remove the belt.
#2 Hold on to the upper nut with socket and breaker bar.
#3 Put a wrench on the nut in the blade.
#4 Remove the nut on the pulley.
#5 Take out the 5 bolts around the base of the pulley.
#6 Drop the unit out from underneath the deck. To install reverse the order.
Easy!! Be sure to grease the bearing. While you are there grease the other jack shaft bearing.
#2 Hold on to the upper nut with socket and breaker bar.
#3 Put a wrench on the nut in the blade.
#4 Remove the nut on the pulley.
#5 Take out the 5 bolts around the base of the pulley.
#6 Drop the unit out from underneath the deck. To install reverse the order.
Easy!! Be sure to grease the bearing. While you are there grease the other jack shaft bearing.
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housing bearing
MICHAEL - November 1, 2023
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, impact gun
Parts Used
R&R part
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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.
