Craftsman MTS 5500: The Ultimate Guide to This Aging Workhorse
The Craftsman MTS 5500 represents a breed of garden tractor that feels like a relic of a bygone era. Built with heavy-gauge steel and powered by a robust V-Twin engine, it promises durability and power that many modern lawn tractors simply can’t match. Yet, for all its strengths, this aging workhorse presents a significant challenge for owners and prospective buyers: uncertainty. Is it a reliable machine or a money pit waiting to happen? How do you diagnose its unique quirks and, more importantly, how do you fix them?
This guide confronts that uncertainty head-on. We will delve into the most common and frustrating problems that plague the Craftsman MTS 5500, from engine failures to transmission woes and steering malfunctions. More than just identifying problems, we provide actionable, step-by-step solutions to keep this powerful garden tractor running for years to come, turning a potentially risky purchase into a dependable asset for any large property owner.
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Unveiling the Craftsman MTS 5500: More Than Just a Mower
The Craftsman MTS 5500, with model numbers often starting with 917, was manufactured for Sears by American Yard Products (AYP) or Husqvarna. It was marketed as a “Monster Tractor Series” for a reason. Unlike smaller lawn tractors designed solely for cutting grass, the MTS 5500 was engineered as a true garden tractor, built on a heavy-duty frame capable of handling ground-engaging attachments like plows, tillers, and snow blowers.
At its heart is typically a 24 HP to 26 HP Briggs & Stratton or Kohler V-Twin engine, providing substantial power and torque. Paired with a robust hydrostatic transmission and a large 48-inch or 54-inch mower deck, it was designed for properties of an acre or more. Its heavy construction and powerful engine are what make it appealing, but also the source of its most common and costly failures.
The Core Challenge: Diagnosing Common MTS 5500 Failures
Years of use and exposure to the elements take their toll. While built to be tough, the MTS 5500 has several well-documented weak points that can bring it to a grinding halt. Understanding these core problems is the first step toward a reliable machine.
Engine Woes: The V-Twin Conundrum
The powerful V-Twin engines from Briggs & Stratton and Kohler are the soul of this tractor, but they are not without their faults. The Kohler Courage series, in particular, is notorious for several issues. Owners frequently report problems with blown head gaskets, which can lead to excessive oil consumption and smoking. Another common failure point is the starter motor, which can fail prematurely.
Carburetors are also a frequent source of frustration. Due to modern ethanol-blended fuels, carburetors can become gummed up, leading to hard starting, rough running, and eventual engine stalling. Diagnosing these issues involves checking for fouled spark plugs, performing a compression test to check for gasket leaks, and inspecting the fuel system for blockages.
Transmission Troubles: The Hydrostatic Headache
The hydrostatic transmission offers effortless, variable-speed control, but it is also one of the most misunderstood and neglected components. A common complaint is a gradual loss of power, especially when the tractor is hot or attempting to climb a hill. The tractor may slow to a crawl or stop moving altogether, even though the engine is running perfectly.
Most often, these symptoms point to old, overheated, or contaminated transmission fluid. Air trapped in the hydraulic system can also cause similar issues. The drive belt that powers the transmission is another critical wear item. If this belt becomes stretched, worn, or slips on the pulleys, the tractor will lose its ability to move forward or in reverse.
The Achilles’ Heel: Steering and Front Axle Wear
Perhaps the most universal problem across all older Craftsman garden tractors is the steering system. Owners often describe the steering as “sloppy,” with a significant amount of play in the steering wheel. This is not just an annoyance; it can become a serious safety issue, making precise control impossible.
The issue stems from the sector and pinion gear design. The soft metal of the sector gear wears down over time, creating excessive backlash. Additionally, the plastic or bronze bushings that support the steering shaft and front axle pivot points degrade, causing the entire front end to become loose and wobbly. This wear is accelerated by heavy use, especially with front-mounted attachments like a snowblower.
Mower Deck Disasters: Rust, Belts, and Spindles
The large mower deck is what does the heavy lifting, but it is constantly exposed to moisture and impacts. Rust is a major enemy, particularly on the top of the deck where wet grass and leaves accumulate. This can lead to pinholes and eventually catastrophic failure where a spindle housing can break free from the deck.
The mower deck’s belts and spindles are also high-wear components. Spindle bearings can fail, leading to a loud roaring noise and uneven cutting. The deck belt is under constant tension and can snap unexpectedly, bringing your mowing job to an abrupt halt.
Your Ultimate MTS 5500 Solution and Maintenance Blueprint
Identifying problems is only half the battle. The real value lies in knowing how to fix them and, more importantly, how to prevent them. A proactive approach to maintenance is the key to ensuring the Craftsman MTS 5500 remains a dependable workhorse rather than a weekend-destroying headache.
A Proactive Maintenance Schedule That Prevents Breakdowns
Regular, scheduled maintenance is the most effective way to prevent the majority of common failures. Sticking to a schedule will not only extend the life of your tractor but also improve its performance and safety. Keeping detailed records can also be helpful, especially when you’re working on something complex, much like how one might track progress when dealing with a drywall patch too thick to ensure a smooth finish.
| Interval | Service Task | Key Focus Area |
|---|---|---|
| Before Each Use | Check Engine Oil Level | Engine Health |
| Check Fuel Level | Operation | |
| Inspect for Loose Parts | Safety | |
| Every 10 Hours | Clean Mower Deck (Top & Underside) | Prevent Rust, Improve Cut |
| Clean Engine Air Filter | Engine Performance | |
| Every 25 Hours | Check Tire Pressure | Even Cutting & Stability |
| Inspect Mower Blades for Sharpness/Damage | Cut Quality | |
| Every 50 Hours | Change Engine Oil & Filter | Crucial for Engine Longevity |
| Inspect Mower Deck Belt & Drive Belt | Prevent Breakdowns | |
| Lubricate All Grease Fittings (Axles, Steering) | Reduce Wear | |
| Annually (or 100 Hours) | Replace Spark Plugs | Reliable Starting |
| Replace Fuel Filter | Prevent Carburetor Issues | |
| Replace Air Filter | Engine Protection | |
| Check/Change Hydrostatic Transmission Fluid | Critical for Transmission Health |
Step-by-Step Fixes for the Most Common Issues
When maintenance is not enough, direct repairs are necessary. Here are simplified guides to tackling the most frequent MTS 5500 problems.
Restoring Transmission Power: If your tractor is slow or won’t climb hills, the first step is to purge the transmission of any trapped air. To do this, engage the transmission disengage lever at the rear of the tractor. Start the engine, and slowly move the speed control pedal from full forward to full reverse several times. If this doesn’t work, a transmission fluid change is likely needed. This is a critical, yet often ignored, service that can completely restore performance.
Tightening Up the Steering: To fix sloppy steering, you must address the worn components. Replacing the steering sector gear and the plastic steering shaft bushings is the most effective solution. This is a moderately involved repair that requires removing the steering wheel and dashboard console, but it will result in tight, responsive steering. For the front axle, replacing the axle pivot bushings will eliminate front-end wobble.
Deck Restoration and Care: To combat deck rust, thoroughly clean the deck after each use. Annually, use a wire wheel to remove any surface rust and apply a coat of rust-inhibiting paint or undercoating. When replacing spindle bearings, it is often best to replace the entire spindle assembly, which includes the housing, shaft, and bearings, to ensure a proper fit and long life.
Beyond Mowing: Unlocking the True Potential of the MTS 5500
The true strength of the MTS 5500 lies in its versatility as a garden tractor. With the right attachments, it can be a year-round tool for property management, from landscaping projects to snow removal. This adaptability is what separates it from less capable lawn tractors.
Essential Attachments and What to Look For
The MTS 5500 is designed for a sleeve hitch, which allows for the use of ground-engaging implements. Attachments to look for include a single-bottom plow for turning soil, a disc harrow for breaking up clumps, and a cultivator for preparing seedbeds. For winter, a 42-inch or 48-inch snowblower attachment or a front-mounted snow blade can turn this mower into a capable snow removal machine.
Upgrades That Make a Real Difference
Simple upgrades can significantly enhance the functionality and user experience of the MTS 5500. Replacing the stock headlights with modern LED lights provides far superior illumination for working in the early morning or evening. Installing an hour meter is a crucial upgrade for accurately tracking maintenance intervals. For improved traction, especially when using a snowblower or plowing, adding wheel weights and tire chains is essential.
Is the Craftsman MTS 5500 a Smart Buy Today?
In today’s market, a used Craftsman MTS 5500 can be a tempting bargain. Its heavy-duty construction is a stark contrast to the flimsy feel of many new entry-level tractors. However, it is not a purchase to be made lightly. A smart purchase requires a careful inspection for the common wear points discussed earlier: check for engine smoke, test the transmission on a slope, and feel for excessive play in the steering.
The value proposition of the MTS 5500 hinges on the owner’s willingness to perform maintenance and repairs. For a DIY-inclined individual, it offers a powerful and versatile machine for a fraction of the cost of a new garden tractor. The search for a quality used machine can feel complex, almost like trying to determine if a business opportunity is legitimate or if, for instance, is Renewal by Andersen a pyramid scheme; thorough research is key in both scenarios. For those who prefer a turnkey solution with a warranty, a new tractor may be a more suitable choice.
Ultimately, the Craftsman MTS 5500 is a capable but demanding machine. It requires an informed owner who understands its weaknesses and is prepared to address them. Whether you’re considering a big project like laying down astro turf for basement flooring or simply maintaining a large yard, this tractor has the power to help, but only if it’s properly cared for. With proactive maintenance and a clear understanding of its common issues, this “Monster Tractor” can live up to its name, providing years of reliable service.
