Enter your machine, what it's doing, and — if you have them — the engine numbers off the housing.
One test at a time, like a tech would: spark first, then fuel, then compression. Each result rules causes in or out — for mowers, riders, generators, pressure washers, trimmers and saws.
What's wrong, the exact part with an honest confidence level, DIY steps, and what a shop would likely charge.
Every step says what to do, what tools you need, what a healthy machine shows, and what each result means.
Verified, Likely, or Unverified — and when we can't confirm a number, we tell you exactly what to find instead of guessing.
OEM dealer, local shop, quality aftermarket, or Amazon — with the trade-offs of each. We identify the part; you pick the seller.
We would rather leave a report blank than fill it with a generic answer, an uncertain component, or the wrong part.
See our verification standard