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Ignition coil (or magneto armature). The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start.

Battery

Coil-ignition

Condenser

Ignition Module
Your Wheel Horse ignition coil is the spark behind reliable starting and smooth engine operation. When it fails, your mower won't fire—or fires sporadically, leaving you stranded mid-season. Repair Clinic offers genuine OEM ignition coils engineered to match your Wheel Horse's electrical specifications precisely.
A faulty ignition coil causes hard starting, rough idle, and weak spark under load. Our replacement parts restore that crisp ignition timing your Wheel Horse mower demands for peak efficiency in the toughest conditions.
Remove the spark plug and ground it against the engine block, then pull the recoil starter. You should see a strong blue spark across the plug gap. If the spark is weak, orange, or absent, your ignition coil is likely dead. Also check that the coil's primary winding connector isn't loose or corroded—a common cause of intermittent starting issues on vintage Wheel Horse models.
Older Wheel Horse mowers used magneto-style coils that require precise air gap adjustment, while newer models feature electronic ignition coils with no gap adjustment needed. Know your mower's vintage before ordering—mixing systems will result in poor performance or no spark. Check your model number to confirm which ignition architecture applies.
Aftermarket coils often lack the exact primary/secondary winding ratios your Wheel Horse engine requires, resulting in weak spark and hard starting. OEM coils match your engine's magneto output perfectly, guaranteeing reliable ignition under all operating conditions. Genuine parts also carry full compatibility with your existing wiring harness and mounting bracket.
Look for the model plate welded to the frame near the steering column or engine block—this is your definitive identification. Write down the complete model and serial number before contacting us, as Wheel Horse used multiple ignition variants across their lineup. Your manual's cover page also displays this critical information.


Ensure your Wheel Horse Lawn Mower starts reliably with genuine OEM ignition coil replacement parts from Repair Clinic. Ignition coils are important for generating the spark needed to ignite the engine's fuel, ensuring smooth starting and operation. Use our model number lookup tool to find the exact ignition coil for your mower. Benefit from same-day shipping, a Price Match Guarantee, and No-Hassle 365-Day Returns for a reliable shopping experience. If you need help with installation, visit our Lawn Mower Repair Help page. For additional parts, browse our selection of Wheel Horse Lawn Mower Parts.
Wheel Horse prints the model number on a plate or label attached to the mower frame, often near the steering column or engine block. Depending on the model, check beneath the seat, around the mower deck, or on the engine housing. Clean away grass and grease so the complete number is easy to read, and record any letters, numbers, and hyphens exactly as shown. Type it into our model number lookup and the catalog narrows to parts made for your unit, across every part category. Using the full model number helps separate similar Wheel Horse mowers and gives you a fast, accurate match, so you can order with confidence knowing the fit is right.

Fresh oil and the right lubricants keep your Wheel Horse Lawn Mower Ignition Controls Ignition Coil running well and help prevent premature wear on moving parts. Repair Clinic stocks OEM oil, grease, and lubricants along with application guides and video walkthroughs for common service tasks. Use the model number lookup to confirm the correct grade and quantity for your unit, and keep extra on hand for your regular service interval.

Repair Clinic has five ways for you to stop your lawn mower from leaking gas. Before we get to those, let's review how the gasoline you pour into the tank powers the mower.

Why does your lawn mower battery keep dying? Repair Clinic has done the research and this article will provide some answers, starting with what a battery's purpose is on a gas-powered lawn mower.

What's causing that black smoke to billow out of the engine? There are three likely reasons and they are all related to how a gas-powered lawn mower engine operates.