Medium
30-60 minutes
Governor Gear Assembly 12 043 05-S
OEM part for: Kohler
Part Number: 12 043 05-S
$27.26
In Stock
Ships within 1 business day 
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Compatibility
This Governor Gear Assembly will fit the following 1281 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Kohler
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
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governor gear
worked great
Guest -
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.
Riding lawn mower would rev way too high
Brandon - May 21, 2017
👍 7 of 7 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Power Drill, Socket set, Wrench Set
1. Jacked front end of tractor up and relieved belt tension; drained all of the oil.
2. Removed four bolts holding engine to frame and disconnected electrical and fuel fittings.
3. Lifted engine over to work bench.
4. Removed large pulley bolt with impact wrench and removed pulley with steering wheel puller.
5. Removed several 6mm bolts from engine case and split cases CAREFULLY with pry bars.
6. Removed seal from case and scraped old gasket material off of mating surface.
7. Replaced broken governor assembly with new one; reapplied new gasket material to mating surface and drove new seal in with large socket.
8. Replaced bolts and torqued to 7 ft/lbs in criss cross manner.
9. Reassembled everything like it all came apart.
2. Removed four bolts holding engine to frame and disconnected electrical and fuel fittings.
3. Lifted engine over to work bench.
4. Removed large pulley bolt with impact wrench and removed pulley with steering wheel puller.
5. Removed several 6mm bolts from engine case and split cases CAREFULLY with pry bars.
6. Removed seal from case and scraped old gasket material off of mating surface.
7. Replaced broken governor assembly with new one; reapplied new gasket material to mating surface and drove new seal in with large socket.
8. Replaced bolts and torqued to 7 ft/lbs in criss cross manner.
9. Reassembled everything like it all came apart.
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Would only run max rpm with not resistance in the govern throttle control
Justin - April 21, 2023
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Nutdriver
Remove the throttle cable
Remove engine mount bolts
Disconnect the fuel line
Disconnect the wiring harness plug
Drain the oil
Remove the pulley shaft from the crank shaft
Pick the engine up and flip over with the oil pan facing up
Remove the oil pan from the engine
Remove the old govern gear
Locate and remove the govern pin usually laying in th engine block
Remove the flat washer from the govern shaft
Place the new washer on the govern shaft
Place the govern pin in the govern gear where the shaft comes thru the center
Place the assembly on the govern shaft until it snaps on
Clean the surface of the oil pan and engine block before applying rtv to the edges all the way around
Bolt the pan back on and mount the engine replacing all of the removed parts back to the engine.
Locate and remove
Remove engine mount bolts
Disconnect the fuel line
Disconnect the wiring harness plug
Drain the oil
Remove the pulley shaft from the crank shaft
Pick the engine up and flip over with the oil pan facing up
Remove the oil pan from the engine
Remove the old govern gear
Locate and remove the govern pin usually laying in th engine block
Remove the flat washer from the govern shaft
Place the new washer on the govern shaft
Place the govern pin in the govern gear where the shaft comes thru the center
Place the assembly on the govern shaft until it snaps on
Clean the surface of the oil pan and engine block before applying rtv to the edges all the way around
Bolt the pan back on and mount the engine replacing all of the removed parts back to the engine.
Locate and remove
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governor broke could not control engine speed
bill - December 16, 2021
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set
removed engine ,removed oil sump, installed new governor, reasembled and parts fit perfectly
repair was a simple fix, up and running in less than 1 hour
thanks e-parts you saved my mower and my wallet
bill
, ohio
repair was a simple fix, up and running in less than 1 hour
thanks e-parts you saved my mower and my wallet
bill
, ohio
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Thanks for voting and helping fellow customers!
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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.
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