Ariens ST 2+2: The Buried Truth About This Vintage Snowblower
You found one in a garage, inherited it, or saw a tempting listing online. It says “Ariens ST 2+2” on the side, a model name that doesn’t appear in modern lineups. You’re left wondering: what exactly is this machine, and is it a hidden gem or a mechanical headache waiting to happen?
The core problem with the Ariens ST 2+2 is the mystery surrounding it. Information is scarce, parts are not readily available at big-box stores, and its unique design philosophy is a world away from today’s snowblowers. This article pulls back the curtain on this vintage workhorse.
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Decoding the “Ariens ST 2+2” Nameplate
The “ST 2+2” designation can be confusing, but it’s rooted in the machine’s fundamental design. It is indeed a two-stage snowblower, meaning it has both an auger to collect snow and an impeller to discharge it. This gives it significantly more power than a single-stage machine, allowing it to handle deeper, heavier snow.
The “2+2” aspect, however, is what sets it apart. These models from the 1980s were designed as “auger-propelled” machines. Unlike most modern two-stage blowers with a separate drive transmission to power the wheels, the ST 2+2 uses its rubber-edged augers to pull the machine forward as it scoops up snow, while the wheels are essentially free-wheeling. This was a cost-effective design that blended some of the raw power of a two-stage with the simplicity of a single-stage.
Key Specifications of a Classic Workhorse
While several variations of the ST 2+2 were produced, most centered around a common set of features perfect for homeowners. These machines were built with a level of durability that is often hard to find in modern equipment. They featured heavy-gauge steel construction designed to withstand years of harsh winter abuse.
Most models, like the common 932015 and 932018, were equipped with a dependable 5-horsepower Tecumseh 4-stroke engine. This engine was a staple of outdoor power equipment for decades, known for its straightforward design and reliability. The clearing widths were typically around 20 inches, making it a nimble machine for sidewalks and smaller driveways.
Why This Vintage Blower Might Be Your Best Bet
In an era of complex, plastic-heavy machines, the ST 2+2’s simplicity is its greatest strength. Its all-metal construction means it can handle bumps and bruises that might shatter the plastic components of newer blowers. For those who aren’t afraid of a little maintenance, these machines represent incredible value.
The auger-propelled system, while primitive by today’s standards, offers a unique benefit. The rubber-edged augers make direct contact with the ground, clearing snow down to the pavement much like a single-stage blower. This provides a cleaner finish than many modern two-stage machines that leave a thin layer of snow behind.
The Brutal Truth: Common Problems and Headaches
Owning a vintage machine is not without its challenges. The Ariens ST 2+2 is over 30 years old, and age brings a predictable set of problems. From engine troubles to the hunt for obsolete parts, prospective owners must be aware of the potential hurdles.
Understanding these common failure points is the key to both keeping an ST 2+2 running and deciding if a used model is worth the investment. Many of these issues can be resolved with basic mechanical skills, but they require patience and a willingness to troubleshoot.
Engine Troubles: The Tecumseh Carburetor
The most common complaint with the ST 2+2 involves the Tecumseh engine, specifically its diaphragm carburetor. Over time, and especially with modern ethanol-blended fuels, the rubber diaphragm can stiffen or degrade. This leads to classic symptoms: the engine won’t start, runs for a few minutes and then dies, or leaks gasoline.
A stuck needle valve within the carburetor is another frequent culprit, often caused by tiny debris in the fuel. This can cause the carburetor to flood, making the engine impossible to start. A thorough cleaning and a carburetor rebuild kit, which includes a new diaphragm and needle valve, is often the first step in reviving a neglected machine.
The Auger-Propelled System: A Double-Edged Sword
While the auger-propelled system provides a clean scrape, it has its drawbacks. The machine’s forward motion is entirely dependent on the condition of the rubber auger paddles and the type of surface. As the rubber wears down, the machine loses its ability to pull itself forward effectively, requiring more physical effort from the operator.
This system works reasonably well on paved surfaces but struggles on loose gravel or icy patches where the augers can’t get a good grip. This is a key difference from wheel-driven systems, which can power through more varied terrain. When considering a purchase, the condition of the auger rubber is one of the most critical inspection points.
Your Ultimate ST 2+2 Troubleshooting and Repair Guide
Bringing an old Ariens ST 2+2 back to life is a rewarding project. With a systematic approach, most common issues can be diagnosed and fixed at home. This guide provides actionable steps to tackle the most frequent problems and get your machine ready for the next blizzard.
Before beginning any repair, always disconnect the spark plug wire to prevent accidental starting. Safety should be the top priority. Having the original owner’s manual can also be incredibly helpful for diagrams and specifications.
Step-by-Step: Reviving a Non-Starting Engine
If the engine refuses to start, follow this checklist. First, check for fuel. Ensure the tank has fresh gasoline (less than 30 days old). Old fuel is the number one cause of starting issues. Second, check for spark by removing the spark plug, reattaching the wire, and grounding the plug against the engine block while pulling the starter cord. You should see a clear blue spark.
If you have fuel and spark, the carburetor is the next suspect. A comprehensive cleaning is often required. This involves removing the carburetor, disassembling it, cleaning all jets and passages with carburetor cleaner, and reassembling with a new diaphragm and gaskets. While it can seem intimidating, it’s a common and well-documented procedure for Tecumseh engines.
Keeping it Moving: Auger and Engagement Issues
If the engine runs but the auger doesn’t spin, the problem usually lies with the engagement system. The ST 2+2 uses a simple cable and lever system. Squeezing the bail lever on the handlebar pulls a cable that engages the auger/impeller assembly.
Check the cable for proper tension and ensure it isn’t frayed or broken. Sometimes, the small connectors or springs that attach the cable to the engagement arm can break or fall off. A careful inspection of this linkage is the first step. If the auger still doesn’t turn, the issue could be a broken belt or, in a worst-case scenario, a failed gearbox.
Is the Ariens ST 2+2 Worth It Today?
Deciding whether to buy or keep an ST 2+2 in the modern era comes down to a trade-off. You’re exchanging modern comforts and parts availability for old-school durability and simplicity. For the right person, it’s an unbeatable value; for others, it’s a potential source of frustration.
Comparing it to today’s machines requires a different mindset. While a modern machine might offer effortless power steering and intuitive controls, the ST 2+2 offers a direct, mechanical connection to the task of clearing snow. The debate between a vintage workhorse and a modern machine is similar to the broader Ariens vs Cub Cadet snowblower comparison, where brand reputation and build quality are key factors.
What to Look for When Buying a Used ST 2+2
When inspecting a used ST 2+2, focus on the fundamentals. Check the auger housing and frame for excessive rust or cracks. Some surface rust is normal for a machine of this age, but structural rust is a major red flag. Examine the rubber on the auger paddles; if it’s heavily worn, cracked, or missing chunks, factor in the cost and effort of replacement.
Ask the seller to start the engine. If it starts easily and runs smoothly, it’s a great sign. If not, assume you’ll need to perform a full carburetor service. Finally, engage the auger to ensure the lever and cable system works correctly.
| Problem | Likely Cause | Solution |
|---|---|---|
| Engine won’t start | Old fuel, fouled spark plug, or clogged carburetor | Replace fuel, clean/replace spark plug, clean carburetor |
| Engine starts, then dies | Clogged fuel cap vent or bad carburetor diaphragm | Loosen fuel cap to test; if it runs, clean/replace cap. Rebuild carburetor. |
| Auger does not spin | Broken/loose belt or broken engagement cable | Inspect and replace the auger belt. Inspect, adjust, or replace the clutch cable. |
| Machine won’t pull forward | Worn or damaged rubber auger paddles | Inspect and replace the rubber paddles on the auger assembly. |
| Gas leaking from carburetor | Stuck needle valve or degraded gaskets | Disassemble and thoroughly clean carburetor, install a rebuild kit. |
Essential Maintenance for Long-Term Reliability
Proper maintenance is the key to keeping any snowblower running, and the ST 2+2 is no exception. The principles of care are timeless and apply just as much to this vintage model as they do to a newer machine like the venerable Ariens 7524 snowblower. Regular checks and preventative actions can avert most common failures.
At the end of each season, it is crucial to either run the carburetor dry or use a fuel stabilizer. This prevents the fuel from gumming up the delicate passages inside. An annual oil change and a new spark plug are inexpensive insurance against engine wear and starting problems.
Final Verdict: A Cult Classic for the Right Owner
The Ariens ST 2+2 is not for everyone. It lacks the creature comforts and raw power of the machines featured in a modern Honda vs Ariens snowblower showdown. It requires a hands-on owner who is comfortable with basic engine maintenance and troubleshooting.
However, for those willing to invest a little time and effort, the ST 2+2 is a remarkably tough and effective machine. Its all-steel build and simple design make it a survivor from an era when equipment was built to last. It is a capable, no-frills snowblower that, with proper care, can continue to clear driveways for many years to come.
