Easy
30-60 minutes
This is an OEM part sourced directly from the manufacturer. The washer is designed for use in Kohler engines. This part is made of metal, and may be found in various locations in the machine, depending on model. Please be aware that there are different washers used in the machine. Refer to the parts diagram to be sure of ordering the correct part. You may require a wrench or screwdriver when replacing this part. This item is sold individually.
Washer: Flat 6 Mm M-631005-S
OEM part for: Kohler, MTD
Part Number: M-631005-S
$4.99
In Stock
Ships within 1 business day 
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Compatibility
This Washer: Flat 6 Mm will fit the following 5905 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 5905 matching models.
5905 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Kohler
- MTD
- Toro
This item works with the following types of products:
- Engine
- Lawn Mower
- Lawn Tractor
This part replaces obsolete part #: KH-M-631005, SM-631005, M0631005, SM0631005
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.
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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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.
