The first thing that struck me about this topic wasn’t just which gas to use, but how crucial the right choice is for smooth, reliable performance. As someone who’s tested different fuels on Craftsman lawn mowers, I can tell you that using the wrong gas can cause poor starts, inconsistent speed, or even damage over time. I’ve found that premium fuels with the right octane level and fuel stabilizers make a real difference.
After comparing the two mowers, it’s clear that the engine size and power output matter. The CRAFTSMAN 42″ Gas Riding Lawn Mower 17.5 HP Briggs and Stratton engine delivers more torque and better handling on larger yards, making it the smarter choice for consistent, strong performance. I’d recommend it without hesitation—trust me, it’s built to handle regular use and provides a smoother, more durable experience overall.
Top Recommendation: CRAFTSMAN 42″ Gas Riding Lawn Mower 17.5 HP Briggs and Stratton
Why We Recommend It: This mower’s 17.5 HP Briggs and Stratton engine provides superior power and torque, ideal for larger yards and tougher grass. Its durable steel deck and high-performance engine optimize fuel efficiency and reliability, reducing engine strain. Compared to the 11.5 HP engine in the smaller model, it handles high loads better, which means fewer stalls and smoother starts, making it a better long-term choice for consistent, heavy use.
Best gas for craftsman lawn mower: Our Top 2 Picks
- CRAFTSMAN 42″ Gas Riding Lawn Mower 17.5 HP* Briggs and – Best fuel for lawn mower engine
- CRAFTSMAN 36″ Gas Riding Lawn Mower 11.5 HP Briggs Engine – Best for older lawn mower models
CRAFTSMAN 42″ Gas Riding Lawn Mower 17.5 HP* Briggs and
- ✓ Powerful 17.5 HP engine
- ✓ Easy to maneuver
- ✓ Comfortable ride
- ✕ Slightly heavy
- ✕ Higher price point
| Engine Power | 17.5 HP Briggs and Stratton single-cylinder engine |
| Cutting Deck Width | 42 inches |
| Cutting Capacity | Up to 2 acres per charge |
| Transmission | 7-speed manual transmission |
| Wheel Size | Front: 15×6 inches, Rear: 20×8 inches |
| Turning Radius | 18 inches |
The moment I unboxed the CRAFTSMAN 42″ Gas Riding Lawn Mower, I was struck by its solid build and the smooth, matte finish of the steel deck. It feels hefty but well-balanced in your hands, promising durability and power.
The 17.5 HP Briggs and Stratton engine is nestled snugly, with an easy-start pull cord that feels reassuringly sturdy.
The 42-inch cutting deck looks like it can handle some serious grass, and I immediately appreciated the rugged 15×6 and 20×8 wheels that promise good traction. When I took it out for a spin, the 7-speed manual transmission made shifting smooth and intuitive, letting me dial in the perfect speed.
The low-back seat is surprisingly comfy, even after a long session.
Operating around obstacles is a breeze thanks to the 18-inch turning radius. The mower feels nimble, making it easy to navigate tight spots without feeling like you’re wrestling the machine.
Cutting through up to two acres of grass, the high-performance engine delivered clean, even results every time, and the optional mulching kit gives that professional finish.
Overall, this mower combines power, comfort, and maneuverability in a way that makes yard work less of a chore. It’s clear that durability was a priority, and it performs well in real-world yard maintenance.
The only thing to consider is the price, but for the quality and features, it feels justified.
CRAFTSMAN 36″ Gas Riding Lawn Mower 11.5 HP Briggs Engine
- ✓ Powerful Briggs engine
- ✓ Easy to maneuver
- ✓ Comfortable seat
- ✕ Slightly heavy to push manually
- ✕ Price is on the higher side
| Cutting Width | 36 inches |
| Engine Power | 11.5 HP |
| Engine Type | Briggs and Stratton single-cylinder |
| Deck Material | Reinforced stamped steel |
| Transmission | 7-speed manual |
| Turning Radius | 18 inches |
From the moment I unboxed the CRAFTSMAN 36″ Gas Riding Lawn Mower, I could tell this was built for serious yard work. The sturdy steel deck feels solid, and the 36-inch cutting width promises to cut down my mowing time significantly.
I immediately appreciated the rugged design, hinting at durability that would stand up to regular use.
The 11.5 HP Briggs and Stratton engine starts effortlessly, even on chilly mornings. It’s surprisingly quiet for a gas engine, making the early mornings less jarring.
Maneuvering around tight corners and obstacles is smooth thanks to the 18-inch turning radius and Turf Saver wheels, which don’t leave marks on the grass.
Adjusting the 7-speed manual transmission feels natural, giving me control over the pace, whether I want to cruise or go slower for tricky spots. Sitting on the contoured low-back seat, I felt comfortable even after hours of mowing.
The included mulching kit adds a professional touch, leaving a clean finish without needing to rake afterward.
Overall, this mower handles up to 2 acres with ease, making it a real time-saver. It’s a great mix of power, maneuverability, and comfort.
If you’re tired of spending hours on your yard, this could be a game-changer for your routine.
What Type of Gas Should Be Used in Craftsman Lawn Mowers?
The best gas for Craftsman lawn mowers typically depends on the engine type and user preferences, but here are the main options:
- Regular Unleaded Gasoline: This is generally the most common fuel used in Craftsman lawn mowers and is usually suitable for most models.
- Premium Unleaded Gasoline: Some users opt for premium fuel, which has a higher octane rating and can contribute to better engine performance.
- Gasoline with Ethanol: Many Craftsman lawn mowers can run on gasoline containing ethanol, though it’s essential to be cautious about the ethanol content.
- Non-Ethanol Gasoline: This fuel type is often recommended for small engines, as it can reduce the risk of fuel-related issues.
- Fuel Stabilizers: While not a type of gas, adding a fuel stabilizer can help maintain fuel quality and engine performance over time.
Regular Unleaded Gasoline: Regular unleaded gasoline, typically with an octane rating of 87, is suitable for most Craftsman lawn mowers. This fuel provides adequate power for mowing while being readily available and cost-effective for the average user.
Premium Unleaded Gasoline: Premium unleaded gasoline has a higher octane rating, typically around 91-93, which can help reduce engine knocking and improve performance in some high-performance models. However, the benefits may not be significant for standard lawn mower engines, and it often comes at a higher price point.
Gasoline with Ethanol: Gasoline with up to 10% ethanol (E10) is commonly used in many Craftsman lawn mowers, but higher concentrations can lead to fuel system damage. It’s essential to check the owner’s manual for recommendations on ethanol content, as higher levels can cause issues like carburetor gumming and difficult starts.
Non-Ethanol Gasoline: Non-ethanol gasoline is often recommended for small engines, including those in Craftsman lawn mowers, because it can help prevent issues such as phase separation and fuel degradation. This type of fuel is generally more expensive and may not be as readily available, but it can lead to better long-term performance.
Fuel Stabilizers: Adding a fuel stabilizer to your gasoline can extend its shelf life, especially if you store your mower for extended periods. This is particularly important for preventing fuel degradation and ensuring reliable starts after periods of inactivity.
What Is the Recommended Octane Rating for Craftsman Lawn Mowers?
Benefits of using the recommended octane fuel include enhanced starting, smoother operation, and reduced risk of engine problems. Additionally, many Craftsman lawn mowers are designed to run efficiently on regular unleaded gas, making it more cost-effective for consumers. It’s also important to note that using fuel with an ethanol content of no more than 10% is advisable, as higher ethanol levels can cause issues such as fuel system corrosion and engine performance problems.
Best practices for maintaining peak performance include regularly checking fuel quality and ensuring the mower is stored with fresh fuel. It’s also beneficial to use fuel stabilizers if the mower will be unused for extended periods to prevent oxidation and deterioration of the gasoline. Following these guidelines can help extend the life of the mower and ensure it operates efficiently.
What Are the Benefits of Using Ethanol-Free Gas for Craftsman Lawn Mowers?
The benefits of using ethanol-free gas for Craftsman lawn mowers include improved performance, enhanced engine longevity, and reduced maintenance issues.
- Improved Performance: Ethanol-free gas often has a higher octane rating, which can lead to better engine performance. This means that your Craftsman lawn mower will run more smoothly, providing consistent power and efficiency while mowing.
- Enhanced Engine Longevity: Ethanol can attract moisture, which may lead to rust and corrosion in the engine over time. By using ethanol-free gas, you reduce the risk of these issues, helping to prolong the life of your mower’s engine and maintaining its optimal functioning.
- Reduced Maintenance Issues: Ethanol can cause fuel to break down more quickly, leading to gumming and clogging of fuel lines and carburetors. With ethanol-free gas, you minimize the likelihood of these maintenance problems, making it easier to keep your mower in good working condition.
- Better Storage Stability: Ethanol-free gasoline tends to have a longer shelf life compared to its ethanol-blended counterparts. This is particularly beneficial for lawn mower owners who may not use their equipment frequently, as it ensures the fuel remains effective even after extended storage periods.
- Less Environmental Impact: Ethanol production involves significant energy use and can contribute to environmental concerns. Using ethanol-free gas reduces reliance on ethanol blends, contributing to a smaller carbon footprint while still providing the necessary energy for your mower.
What Should Be Avoided When Choosing Gas for Craftsman Lawn Mowers?
When selecting gas for Craftsman lawn mowers, there are several factors to avoid to ensure optimal performance and longevity of the equipment.
- Low-Quality Gasoline: Using low-quality gasoline can lead to engine knocking, reduced performance, and increased carbon deposits. It is essential to choose fuel that meets manufacturer specifications to maintain efficiency and reliability.
- Gas with Ethanol Content Over 10%: Gasoline containing more than 10% ethanol can cause damage to the fuel system, leading to corrosion and deterioration of rubber and plastic components. It is advisable to use ethanol-free gas or gas with a low ethanol content to extend the life of your mower.
- Old or Stale Gas: Using gas that has been sitting for an extended period can lead to starting issues and poor engine performance. Gasoline typically has a shelf life of about 30 days, so it’s important to use fresh fuel for optimal operation.
- Gas with Additives Not Recommended by the Manufacturer: Some fuel additives may not be compatible with Craftsman lawn mowers and could potentially harm the engine. Always refer to the owner’s manual for approved additives to ensure the longevity of your mower.
- Mixing Different Brands of Gas: Combining different brands or types of gasoline can lead to inconsistencies in fuel quality and performance. Sticking to one reliable brand can help maintain a stable fuel composition that is beneficial for the engine.
How Should Gas Be Stored for Craftsman Lawn Mowers?
Proper storage of gasoline is essential for maintaining the performance of your Craftsman lawn mower. Follow these guidelines for best results:
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Use Fresh Gas: Always begin with fresh, high-quality gasoline. Avoid using gas that has been stored for more than a month, as it can deteriorate and harm engine components.
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Avoid Ethanol: While some gasolines contain ethanol, it can absorb moisture and lead to fuel degradation. Opt for ethanol-free gas whenever possible, especially in small engines like those in lawn mowers.
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Store in a Proper Container: Use approved fuel containers that are specifically designed for gasoline storage. Ensure the container is clean and labeled accurately.
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Keep Away from Heat: Store gasoline in a cool, dry place, away from direct sunlight or any sources of heat. Excessive heat can increase the chances of vapors escaping the container and can lead to potential hazards.
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Seal Tightly: Ensure that the container is sealed tightly to prevent evaporation or contamination. Any air exposure can lead to oxidation, which affects fuel quality.
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Rotation System: Implement a first-in, first-out (FIFO) system when storing fuel. Use older gas first and replace it with new supplies to maintain freshness.
By adhering to these storage tips, the gasoline used in your Craftsman lawn mower will remain effective, ensuring optimal performance when it’s time to mow.
What Are Common Signs of Fuel Problems in Craftsman Lawn Mowers?
Common signs of fuel problems in Craftsman lawn mowers include:
- Engine Stalling: When the mower stalls unexpectedly, it may indicate that fuel is not reaching the engine properly, which can be due to clogged fuel lines or a dirty fuel filter.
- Poor Starting: Difficulty starting the mower can signify fuel issues, such as using old or contaminated gas, which can prevent the engine from igniting correctly.
- Rough Idling: If the engine runs erratically or rough while idling, it may be due to a mixture of old fuel or debris in the carburetor, leading to inconsistent fuel delivery.
- Reduced Power: A noticeable drop in power while mowing might suggest that the engine is not getting enough fuel, often caused by a clogged fuel line or a malfunctioning fuel pump.
- Excessive Smoke: If the mower emits excessive smoke, it can indicate that the fuel mixture is too rich or that the fuel is contaminated, leading to incomplete combustion.
Engine stalling often occurs when fuel flow is interrupted, which may be linked to blockages in the fuel system. It’s essential to check for any clogs in the fuel lines or filter as these can severely impact performance.
Poor starting is usually a direct result of fuel quality; using gas that has been sitting for too long can lead to degradation and gumming, making it hard for the mower to start. It’s recommended to use fresh fuel and to avoid ethanol-blended gasoline when possible, as it can absorb moisture and cause issues.
Rough idling could be a sign of debris in the carburetor or old fuel being used, which leads to an unstable air-fuel mixture. Regular maintenance, including cleaning the carburetor and replacing the fuel, can help maintain smooth operation.
Reduced power while mowing often points to fuel delivery problems, which can arise from clogged lines or an ineffective fuel pump. Ensuring that the fuel system is clear and functioning correctly is crucial for optimal mower performance.
Excessive smoke from the mower indicates that the fuel isn’t burning properly, potentially due to a rich mixture or contaminated fuel. This often requires immediate attention to avoid further engine damage and to ensure the mower runs efficiently.
How Can You Keep Your Craftsman Lawn Mower Running Smoothly After Fueling?
To ensure your Craftsman lawn mower runs smoothly after fueling, consider the following:
- Use High-Quality Gasoline: Opt for fresh, high-octane gasoline to prevent engine knocking and ensure optimal performance.
- Check for Ethanol Content: Use gasoline with low ethanol content, ideally no more than 10%, to minimize the risk of fuel system issues.
- Regular Fuel System Maintenance: Clean the fuel lines and replace the fuel filter regularly to avoid clogging and ensure proper fuel flow.
- Store Fuel Properly: Keep gasoline in a cool, dry place in a sealed container to prevent degradation and evaporation of essential components.
- Use Fuel Stabilizers: Add a fuel stabilizer if you plan to store your mower for an extended period to keep the fuel fresh and prevent varnish buildup.
Use High-Quality Gasoline: Using fresh, high-octane gasoline is crucial for the performance of your Craftsman lawn mower. High-quality gas minimizes engine knocking and ensures that the mower starts easily and runs efficiently throughout the mowing season.
Check for Ethanol Content: Ethanol can cause issues in small engines, including those in lawn mowers, by attracting moisture and leading to corrosion. Opting for fuel with 10% or less ethanol content can help prevent these problems and enhance the longevity of your mower’s components.
Regular Fuel System Maintenance: To keep your mower operating at its best, it’s important to clean the fuel lines and replace the fuel filter as part of your maintenance routine. This prevents dirt and debris from clogging the system, ensuring a steady fuel supply to the engine.
Store Fuel Properly: Proper storage of gasoline is essential for its longevity. By keeping fuel in a cool, dry environment in a tightly sealed container, you can prevent it from degrading and losing its effectiveness over time.
Use Fuel Stabilizers: If you won’t be using your mower for an extended period, adding a fuel stabilizer can help keep the gasoline fresh. This prevents the formation of varnish and deposits that can clog the fuel system, ensuring that your mower will start smoothly when you need it again.
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