Medium
30-60 minutes
The coupling goes next to the rear coupling support bracket. This authentic item is supplied directly from the original equipment manufacturer for use with log splitters made by MTD, Troy-Bilt, and Cub Cadet. This part is sold individually and is made of metal. During replacement, it may require a socket set, a set of pliers, and a screwdriver to help install this part correctly. It will require replacing if it becomes broken.
Coupling-logsplitt 718-04392
OEM part for: MTD, Troy-Bilt
Part Number: 718-04392
$15.08
In Stock
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Compatibility
This Coupling-logsplitt will fit the following 734 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Log Splitter Parts
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April 29, 2020
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Troy-Bilt log splitter coupling
Fast shipping, part fit right on my log splitter, up and going again in no time......thank you for your fast service........
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May 10, 2019
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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.
Coupling teeth on the pump broke. Replaced the coupler and the rubber bushing.
David - May 16, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Log Splitter
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Allen wrench
Parts Used
I needed to remove the engine with 3 bolts to get to the bolt heads for the pump. I had to drop the pump out to get in good position to remove the set screw on the coupler. After assembly, I realized the coupler was too high so I had to drop the pump again and reset the position. Re-installed the engine and it works great.
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Broken coupler
Bryan - March 22, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Log Splitter
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set
Had to remove engine to undo mounting bolts, that's alright, she was in need of some tlc.
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coupler between engine and hydraulic pump broke
Earl - November 26, 2020
Tool Type
Log Splitter
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, allen wrench, gear puller, feeler guage
Removed engine and pump mounting for gear access. loosened set screws with allen wrench and used gear puller to remove both couplers, one from engine and one from hydraulic pump. Replaced in reverse order, tapping couplers lightly in exact position of old ones and adding spider bushing between couplers. When bolted together, make sure there is 0.15 to 0.25 between couplers with feeler gauge. Loosen set screws and set adjustment if necessary.
Special note: remove couplers to check shaft sizes before ordering as at least three different sizes are available. Shaft sizes are stamped on couplers.
Special note: remove couplers to check shaft sizes before ordering as at least three different sizes are available. Shaft sizes are stamped on couplers.
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Teeth on the couplings were wore off
Donald - May 11, 2019
Tool Type
Log Splitter
Difficulty
Medium
Time
15-30 minutes
Tools Used
Socket set, Wrench Set
Just remove one coupling from the engine and remove the other coupling from the pump and then go back with the new ones,,,,,,,,,now the splitter works good as new....thanks....
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Spider bushing wore out
Eugene - March 24, 2019
Tool Type
Log Splitter
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Allen tool
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The part broke
Rexann - March 27, 2018
Tool Type
Log Splitter
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set
Parts Used
Replace the part, started the log splitter and continued to split the wood.
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Bad engineering design: self destructing spacer between engine & pump.
Robert - July 29, 2017
Tool Type
Log Splitter
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Grease
1. Separate main frame from splitter , including hydraulic hoses.
2.Contain hydraulic oil.
3. Separate engine from pump.
4. Remove couplings w/ spider spacer. 1/8" Allen wrench required (maybe rust blaster) for set screws.
5. Secure woodruff keys from each coupling half.
6.Steel wool & bearing grease pump & engine shafts.
7.Reinstall new couplings with set screws not tight.
8.Lower engine to pump. Pump has Spider spacer on its coupling. Jiggle to interlock couplings.
9.Reposition engine & pump frame(main frame w/ wheels) to set .02-.09 gauge space. Hard to do.
10.Tighten set screws(70#) w/ Allen wrench. Grease in Woodruff slots can fool you on tightness.
11.Secure engine to main frame. Reconnect hoses. Check hydraulic oil. Start engine.
12. Engine pull start will be "stiff" at first.
13. Exercise splitter 10-12 times.
Recheck oil.
14. Double check set screw tightness after a little splitting.
2.Contain hydraulic oil.
3. Separate engine from pump.
4. Remove couplings w/ spider spacer. 1/8" Allen wrench required (maybe rust blaster) for set screws.
5. Secure woodruff keys from each coupling half.
6.Steel wool & bearing grease pump & engine shafts.
7.Reinstall new couplings with set screws not tight.
8.Lower engine to pump. Pump has Spider spacer on its coupling. Jiggle to interlock couplings.
9.Reposition engine & pump frame(main frame w/ wheels) to set .02-.09 gauge space. Hard to do.
10.Tighten set screws(70#) w/ Allen wrench. Grease in Woodruff slots can fool you on tightness.
11.Secure engine to main frame. Reconnect hoses. Check hydraulic oil. Start engine.
12. Engine pull start will be "stiff" at first.
13. Exercise splitter 10-12 times.
Recheck oil.
14. Double check set screw tightness after a little splitting.
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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.
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