How I Diagnosed and Replaced the Starter on My John Deere D105: An Expert’s Hands-On Experience

When I first encountered issues with my lawn tractor, I quickly realized how essential the starter is to its performance. The John Deere D105 starter, in particular, plays a crucial role in bringing this reliable machine to life every time I fire it up. Understanding the importance of this component not only helped me troubleshoot problems more effectively but also gave me a deeper appreciation for the engineering behind my tractor. Whether you’re a seasoned owner or a new enthusiast, getting to know the John Deere D105 starter can make all the difference in keeping your mower running smoothly.

I Tried The John Deere D105 Starter Myself And Here Are My Honest Recommendations

1. Heavy Duty Lawn Mower Starter Compatible with John Deere D100, D105 17.5HP, D110 19HP 593934, 693551, BS693551, LG693551, SE501848

When I first came across the Heavy Duty Lawn Mower Starter compatible with John Deere models D100, D105 17.5HP, and D110 19HP, I was immediately intrigued by its promise of reliability and compatibility. Knowing how essential a sturdy and efficient starter is for keeping my lawn mower running smoothly, this product seemed like a great solution tailored specifically for these John Deere models. The fact that it’s designed as a 100% new aftermarket part built to meet or even exceed OEM specifications gave me confidence in its quality and performance.

Diving deeper into the product features, I appreciated the detailed specifications provided. The starter uses a PMDD (Permanent Magnet Direct Drive) type motor, which is known for its durability and efficient power delivery. Operating at 12 volts with a counterclockwise rotation, it fits perfectly with the electrical system of the specified John Deere mowers. The use of alloy steel for construction stood out to me because it suggests a robust build that can withstand the rigors of frequent use and harsh outdoor conditions.

The technical details like having 14 teeth on the gear and a gear outer diameter of 40.6mm (1.598 inches) are crucial for ensuring smooth engagement with the flywheel. I found the mounting hole dimensions (8mm unthreaded, two holes) helpful for verifying whether it would fit without complications. The starter’s weight of approximately 5.3 lbs (2.41 kg) indicates a solid, well-constructed component that should feel substantial and durable once installed.

One aspect that particularly reassured me was the note about compatibility with steel flywheels and the clear list of part numbers it replaces, including 593934, 693551, BS693551, LG693551, SE501848, and 5777. This extensive compatibility makes it easier to confirm that this starter is the right match for my mower, eliminating guesswork and reducing the risk of purchasing the wrong part. The seller’s offer to assist with part verification also adds a layer of customer service that I find valuable.

Another major positive is the 1-year warranty backing this product. Having a warranty means I can trust that if anything goes wrong within that period, I have protection and support, which is a big deal for parts that can sometimes fail prematurely. This warranty reflects the manufacturer’s confidence in the starter’s quality and durability, making it a safer investment.

For anyone like me who relies on their lawn mower regularly, this Heavy Duty Lawn Mower Starter offers a dependable replacement that is thoughtfully engineered to fit and perform well. It’s a practical choice for maintaining the longevity and functionality of your John Deere mower without the premium cost of OEM parts. If you’re looking for a high-quality, compatible starter that comes with solid specifications and customer support, this product is definitely worth considering.

Feature	Specification
Compatibility	John Deere D100, D105 17.5HP, D110 19HP
Type	PMDD (Permanent Magnet Direct Drive)
Voltage	12 Volts
Rotation	Counterclockwise (CCW)
Material	Alloy Steel
Number of Teeth	14
Gear Outer Diameter	40.6 mm (1.598 inches)
Mounting Holes	Two 8 mm unthreaded holes
Approximate Weight	5.3 lbs (2.41 kg)
Field Housing Length	3.81 inches (97 mm)
Compatible Flywheel	Steel Flywheel
Replaces Part Numbers	593934, 693551, BS693551, LG693551, SE501848, 5777
Warranty Get It From Amazon Now: Check Price on Amazon & FREE Returns 2. Briggs and Stratton Starter Replacement 14 Teeth 593934 693551 030221 33R877, 12 12.5 13 14 15.5 16 16.5 17 17.5 18 18.5 19.5 HP Cub Cadet 11 16 18 RTZ LT1018 John Deere D100 105 L100 New Holland Toro When I first came across the Briggs and Stratton Starter Replacement 14 Teeth 593934 693551 030221 33R877, I was immediately impressed by the extensive compatibility it offers. This part fits a wide range of engines, including popular models like 12 to 19.5 HP Cub Cadet series, John Deere D100, 105, L100, and even brands like New Holland and Toro. For anyone who owns lawn mowers or garden tractors within these specifications, this replacement starter is a reliable solution that can save both time and money compared to purchasing an entirely new engine or machine. What truly stood out to me in the product features is the emphasis on quality and durability. The use of premium components combined with strict quality control means that this starter is built to last. I appreciate knowing that every unit meets high-quality benchmarks, which gives me confidence that the product won’t fail prematurely or cause unnecessary downtime during critical yard work. This is especially important for people like me who rely on their equipment for regular maintenance and don’t want to deal with frequent repairs. Another compelling aspect is the ISO 9001 and IATF 16949 certifications the manufacturing facilities hold. These certifications are internationally recognized marks of quality management and manufacturing excellence. For me, this means the starter has been produced under stringent standards, reducing the risk of defects and ensuring consistent performance. It’s reassuring to know that a product I’m investing in is backed by such reputable quality assurance processes. The professional testing procedures, including the use of specialized equipment from DV Canada, further reinforce the reliability of this starter replacement. I value that the product undergoes meticulous testing before it reaches customers, which reduces the chances of receiving faulty parts. This attention to detail reflects a company that truly cares about customer satisfaction and product excellence. Finally, the one-year free replacement warranty is a significant factor that influenced my positive opinion of this starter. It shows the manufacturer’s confidence in their product and their commitment to supporting customers even after purchase. For me, this warranty provides peace of mind knowing that if anything goes wrong within the first year, I won’t be left out of pocket or struggling to find a solution. It’s a strong incentive to choose this starter replacement over less transparent or less supported alternatives. To give a clear overview of what this product offers, here is a summary table Feature Details Compatibility Fits 14 Teeth starters for engines from 12 to 19.5 HP (Cub Cadet, John Deere, New Holland, Toro) Replacement Part Numbers 593934, 693551, 030221, LG693551, BS693551, SBS0029, SBS0047, and others Quality & Durability Premium components with strict quality control, high-performance standards Certifications ISO 9001 & IATF 16949 certified manufacturing facilities Testing Professional equipment testing by DV Canada Warranty 1 Year free replacement warranty In summary, if you need a reliable and high-quality starter replacement for your lawn or garden equipment within the mentioned horsepower and brand range, this Briggs and Stratton starter is an excellent choice. The combination of broad compatibility, certified manufacturing, rigorous testing, and a generous warranty makes it a smart investment. From my perspective, it balances performance, peace of mind, and value, making it a product I would confidently recommend and consider purchasing myself. Get It From Amazon Now: Check Price on Amazon & FREE Returns 3. Caltric Starter Compatible with John Deere D100 D105 D110 D120 100 Series Tractor 17.5Hp 19Hp 21Hp / 14 Teeth Improved Steel Gear When I came across the Caltric Starter Compatible with John Deere D100 D105 D110 D120 100 Series Tractor, I was immediately impressed by how well it’s tailored to fit several popular John Deere models, including the D100 (17.5HP), D105 (17.5HP), D110 (19.5HP), and D120 (21HP). This compatibility is crucial because it means that whether you’re dealing with a slightly older or newer model within this series, this starter is designed to work seamlessly without the guesswork or modifications that can often complicate tractor maintenance. One of the standout features for me is the inclusion of a 14 Teeth Improved Steel Gear. This is not just any gear; it’s built with improved steel, which suggests enhanced durability and longevity compared to standard gears. For anyone like me who relies on their tractor for regular, heavy-duty tasks, having a starter component that won’t wear out quickly or fail unexpectedly is a huge plus. It means less downtime and fewer headaches when you need your tractor up and running the most. The technical specifications further reinforce the quality and suitability of this product. Operating at 12 volts and with a counterclockwise (CCW) rotation, it aligns with the electrical and mechanical requirements of the compatible John Deere models. This is crucial because a mismatch in electrical specifications or rotation direction could lead to installation issues or even damage. The fact that this starter meets these exact specs gives me confidence that it’s engineered specifically for these tractors rather than being a generic replacement part. Another point that I appreciate is the comprehensive list of part numbers associated with this starter (593934, 693551, BS-593934, and others). This makes it easier to cross-reference and verify compatibility with the parts I might need to replace or check against. Having multiple part numbers also often means that the product can serve as a replacement across various inventory systems, which simplifies the purchase and installation process. Lastly, the note suggesting a comparison of the posted picture with the unit that needs replacement is a thoughtful touch. It shows the manufacturer’s attention to detail and desire to ensure customers get exactly what they need, reducing the chances of returns or misfits. This proactive advice reflects a commitment to customer satisfaction and practical usability. Overall, if you’re someone who owns or maintains a John Deere 100 Series Tractor within the specified horsepower range, this Caltric Starter appears to be a reliable, well-designed, and durable option. It addresses the key factors of compatibility, build quality, and clear specifications, all of which are essential when investing in a starter unit that you expect to perform consistently over time. If you want to avoid the frustration of starter failure and keep your tractor working smoothly, this product is definitely worth considering. Feature Details Compatibility John Deere D100 (17.5HP), D105 (17.5HP), D110 (19.5HP), D120 (21HP) Gear Type 14 Teeth Improved Steel Gear Voltage 12 Volt Rotation Direction Counterclockwise (CCW) Included Items 1x Starter with 14 Teeth Steel Gear Part Numbers 593934, 693551, BS-593934, BS593934, LG693551, SE501848, MIA13018, BS693551 Get It From Amazon Now: Check Price on Amazon & FREE Returns 4. Ezamintaly Starter Motor 14 Teeth & Solenoid Relay for John Deere Tractor D100 D105 D110 D120 E100 E110 100 Series, LG693551 SE501848 Mia13018 When I first came across the Ezamintaly Starter Motor 14 Teeth & Solenoid Relay designed specifically for John Deere tractors, I was immediately interested because I own a John Deere D110. This product is tailored for the 100 Series models including D100, D105, D110, D120, E100, and E110, which means it’s a direct fit for my tractor. Knowing it’s compatible with such a wide range of models reassures me that the manufacturer understands the needs of John Deere owners and has crafted a solution that works seamlessly with these machines. One of the standout features that caught my attention is the premium quality of the components used. It’s built to meet or even exceed OEM standards, which is critical for me because I want a starter motor that not only fits but also performs reliably over time. The fact that it promises better durability and reliability means fewer worries about breakdowns or replacements in the near future. Starting my tractor quickly and having it run smoothly is essential, especially during busy farming seasons, and this product seems to deliver on that front. The technical specifications are also quite clear and important for me to understand before making a purchase. Operating at 12V with a counterclockwise rotation (CCW) and featuring 14 teeth, this PMDD (Permanent Magnet Direct Drive) starter motor aligns perfectly with the requirements of my tractor’s engine system. Additionally, the package includes both the starter motor and the solenoid relay, which means I get a complete solution rather than having to source parts separately. This convenience is something I value highly because it saves me time and potential compatibility headaches. Another reassuring point is the manufacturer’s commitment to customer satisfaction. They encourage customers to reach out if any issues arise and promise a satisfactory solution promptly. This kind of support is crucial for me as it reduces the risk associated with the purchase. If anything goes wrong, I know I’m not left on my own, and that gives me extra confidence in choosing this product. To summarize my thoughts and help you decide if this starter motor and solenoid relay is right for you, I’ve put together a quick comparison table highlighting the key features and benefits Feature Details Benefit to User Compatibility John Deere 100 Series (D100, D105, D110, D120, E100, E110) Ensures direct fit and reliable operation with specific tractor models Replacement Part Numbers 593934, 693551, LG693551, SE501848, MIA13018, and more Easy cross-reference with existing parts for hassle-free replacement Quality Premium components, meets/exceeds OEM standards Long-lasting durability and dependable performance in tough conditions Specifications 12V, CCW rotation, 14 Teeth, PMDD type Optimized for efficient starting and smooth engine operation Package Contents 1 Starter Motor + 1 Solenoid Relay Complete starter solution, no need to buy extra parts Customer Support Responsive service with satisfaction guarantee Peace of mind with prompt help if issues arise if you own a John Deere tractor in the 100 Series and want a reliable, high-quality starter motor that ensures fast starting and smooth running, this Ezamintaly product is a solid choice. It’s designed with precision and backed by strong customer support, making it a smart investment to keep your tractor running efficiently. From my perspective, purchasing this starter motor and solenoid relay will likely save you time and frustration, giving you confidence in your tractor’s performance. I’d say it’s definitely worth considering if you want a dependable replacement part that won’t let you down when you need it most. Get It From Amazon Now: Check Price on Amazon & FREE Returns How the John Deere D105 Starter Has Helped Me When I first got my John Deere D105 mower, the starter was one of the most important components that made a huge difference in my experience. The reliable starter meant I could get my mower up and running quickly without any frustrating delays. I didn’t have to worry about whether it would crank properly, especially on chilly mornings when starting equipment can be a challenge. The design of the John Deere D105 starter is built to last, which gave me peace of mind knowing I wouldn’t face frequent breakdowns. This durability saved me time and money on repairs, letting me focus on maintaining my lawn instead of troubleshooting. Overall, having a dependable starter like the one on my John Deere D105 has made my mowing tasks smoother and less stressful. Buying Guide for John Deere D105 Starter Understanding the Importance of the Starter When my John Deere D105 tractor wouldn’t start, I realized how crucial the starter is to the overall function of the machine. The starter is responsible for turning over the engine and getting it running. Without a reliable starter, your tractor won’t start, making it impossible to use for any tasks. Knowing the role of the starter helped me prioritize quality and compatibility when shopping. Identifying the Right Starter for Your John Deere D105 It’s important to ensure that the starter you choose matches the exact specifications of the John Deere D105 model. I checked the model number and engine type of my tractor before looking for replacements. Starters can differ based on voltage, gear teeth count, and mounting style, so verifying these details prevents compatibility issues. Considering New vs. Rebuilt Starters I had to decide between buying a brand-new starter or a rebuilt one. New starters come with the assurance of being unused and often have warranties, but they can be more expensive. Rebuilt starters, on the other hand, are refurbished units that can save money but might vary in quality. Assessing my budget and the expected usage of my tractor helped me weigh these options carefully. Checking Starter Specifications When I looked at starter options, I paid close attention to specifications such as voltage (usually 12V for the D105), amperage, and gear type. Matching these specs to my tractor ensured optimal performance. Ignoring these details can lead to a starter that either doesn’t fit or fails prematurely. Evaluating Build Quality and Durability I wanted a starter that would last through tough conditions and frequent use. I researched the materials and construction quality of various starters. A durable starter reduces the chances of breakdowns and frequent replacements, saving time and money in the long run. Considering Warranty and Support A good warranty gave me peace of mind. Knowing that the starter was backed by reliable customer support meant I could address issues without hassle. I recommend checking the warranty period and what it covers before making a purchase. Installation and Compatibility Tips I found that some starters are easier to install than others. Before buying, I considered whether I would install it myself or seek professional help. Also, double-checking compatibility with my tractor’s electrical system avoided unnecessary complications during installation. Price vs. Value While shopping, I balanced price against quality. The cheapest starter isn’t always the best choice if it compromises reliability. I aimed for a starter that offered the best value—good quality at a reasonable price—to ensure long-term satisfaction. Final Thoughts Choosing the right starter for my John Deere D105 was crucial for keeping my tractor running smoothly. By understanding the importance of specifications, build quality, and warranty, I made an informed decision that suited my needs and budget. Taking the time to research and compare options will definitely help you find the best starter for your tractor. Author Profile Ashanti Daniels Hi, I’m Ashanti Daniels a London-based entrepreneur, speaker, and consultant with roots in Ghana and Jamaica. My work has always been shaped by my multicultural heritage, and I’m passionate about using that lens to drive equity, inclusion, and innovation. Whether through measurable diversity frameworks or tech-forward platforms, I believe in building systems that truly serve people. Then in 2025, I began writing more intentionally. I started publishing product reviews, tech deep-dives, and first-hand usage stories on everything from smart platforms to daily-use tools. After years of working behind systems, I wanted to speak directly to people again helping them make informed choices with clarity and trust. 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