Easy
15-30 minutes
This is an authentic Troy-Bilt replacement part. The spark plug is commonly found in yard equipment such as lawn mowers and log splitters. This part is a complete spark plug assembly, and is placed in the cylinder head to deliver electric current from the ignition system to the combustion chamber. This item is sold individually.
Spark Plug BS-591868
OEM part for: Troy-Bilt, MTD
Part Number: BS-591868
$9.23
In Stock
Ships within 1 business day 
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Compatibility
This Spark Plug will fit the following 20 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:
- Lawn Mower Parts
- Log Splitter Parts
This part replaces obsolete part #: BS-799876
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All of my order arrived as scheduled with the correct parts. I will use them again for my lawn care equipment repairs.
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April 13, 2022
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Whenever I need a part of any home projects ereplacementparts.com is my go to. Thank you for the great service.
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December 1, 2020
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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.
Normal replacement of dirty and wore parts
John - June 4, 2018
👍 1 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Removed and replaced old filter and spark plug
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Lawn Mower running slow and then dies.
Jeremie - July 9, 2017
👍 0 of 2 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
1. Remove air filter with a flat screwdriver.
2. Replace air filter, make sure you follow markings on the new air filter.
3. Tighten with a flat screwdriver.
4. Remove spark plug cable and then use a Pliers or socket to remove the Spark plug.
5. Check the gap on the old spark plug and make sure new spark plug is at the same gap size.
6. Insert new spark plug and tighten snug.
7. Loosen Blade control by flexing the handle. slide out cable and then slowly move the blade control out of another side of the handle.
8. Insert right side of blade control into the handle, then insert the cable into the left side and carefully flex handle to get the left side of blade control into the hole.
2. Replace air filter, make sure you follow markings on the new air filter.
3. Tighten with a flat screwdriver.
4. Remove spark plug cable and then use a Pliers or socket to remove the Spark plug.
5. Check the gap on the old spark plug and make sure new spark plug is at the same gap size.
6. Insert new spark plug and tighten snug.
7. Loosen Blade control by flexing the handle. slide out cable and then slowly move the blade control out of another side of the handle.
8. Insert right side of blade control into the handle, then insert the cable into the left side and carefully flex handle to get the left side of blade control into the hole.
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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.
