Craftsman Tiller Spark Plug Parts

Craftsman Tiller Spark Plugs

A fouled or worn spark plug is one of the quickest fixes for a Craftsman tiller that won't start or runs rough. The spark plug ignites the fuel mixture in the small engine — when it's dirty, gapped wrong, or corroded, combustion fails and your tiller won't turn over. Replacing the spark plug every season (or after 100 operating hours) keeps your tiller ready to till.

Craftsman tillers use standard small engine plugs, but the exact heat range matters. Using the wrong plug type can cause hard starting or fouling. Use your model number to find the OEM-spec plug — Champion and NGK are the most common types across Craftsman tillers.

• Tiller won't start: spark plug fouled, gap incorrect, or electrode worn
• Hard starting, especially cold: spark plug heat range too cold or plug gapped too wide
• Rough idle or stalling: fouled plug from old fuel or excessive oil
• White or black soot on plug tip: running too lean or rich; replace plug and check fuel mixture
• Wet spark plug after sitting: fuel leaking into combustion chamber; check carburetor and valve seat

Craftsman Tiller Spark Plug Questions

What spark plug does my Craftsman tiller use?

Craftsman tiller spark plugs depend on the engine brand — most Craftsman tillers use Briggs & Stratton, Kohler, or Tecumseh small engines. Enter your full model number (found on the tiller frame or engine block) into Repair Clinic's lookup tool, and we'll show you the exact OEM spark plug type and gap specification. Never guess on heat range — the wrong plug causes hard starting and fouling.

How often should I replace the spark plug on my Craftsman tiller?

Replace the spark plug every season before spring tilling, or after 100 operating hours — whichever comes first. If you stored the tiller with old fuel in the tank, the plug likely fouled. A fresh plug is a $5 to $8 fix that often solves starting issues quickly. Keep a spare in your garage during the tilling season.

Why does my Craftsman tiller spark plug keep fouling?

Fouling usually means old or wrong-mix fuel, a choke stuck in the on position, or a carburetor running too rich. A new spark plug fixes the symptom, but if fouling happens every few hours, investigate: drain old fuel, clean or rebuild the carburetor, and verify the choke operates freely. A gasket set or carburetor rebuild kit is often the real fix.

Can I use a universal spark plug in my Craftsman tiller?

Generic plugs fit mechanically, but OEM plugs from Champion or NGK maintain the correct heat range for your engine. Too hot and it pre-ignites; too cold and it fouls. Your model number determines the exact type — don't compromise on the spark plug — it's the ignition system's most critical part.

Order Craftsman Tiller Spark Plug Replacement Online

Keep your Craftsman tiller running efficiently by replacing a faulty spark plug promptly. With same-day shipping on most in-stock items, you'll have your replacement part fast, minimizing downtime. Our model/part number lookup finds the exact OEM part for your unit, and every order is backed by our 365-day return policy and price-match guarantee. If your Craftsman tiller spark plug is failing — showing symptoms like reduced performance, unusual noise, or complete non-operation — replacement is typically the fastest fix. Browse our full library of Craftsman repair resources for troubleshooting guides and installation videos.

Craftsman Tiller Model Number: Where to Look

On Craftsman tillers, look for the model number on a label or metal plate attached to the frame, engine housing, or near the recoil starter. The number may include digits and periods, such as 247.29930 or 316.29256, so copy it exactly, including every character. Type it into the model number search to pull up the parts matched to your unit. This filters the full Craftsman tiller catalog, including engine, drive, tilling, and replacement parts, to options designed for your specific model. It is the quickest way to be sure the part fits before you order.