Here's why:
* Many models: Briggs & Stratton makes numerous 6 HP engines, each with potentially different spark plug requirements.
* Specific engine code: The spark plug information is tied to the engine's specific model number and code.
How to find the correct spark plug:
1. Locate the engine model and code: This information is usually found on a metal tag attached to the engine. It will look something like this: "123456-XXX-0000."
2. Consult the Briggs & Stratton website: Go to the Briggs & Stratton website ([https://www.briggsandstratton.com/](https://www.briggsandstratton.com/)) and use their online parts lookup tool. You can enter your engine model and code to find the recommended spark plug.
3. Check your owner's manual: The manual for your lawn mower should also list the correct spark plug type.
4. Visit a local lawnmower repair shop: They will be able to quickly identify the correct spark plug based on your engine model.
Remember: Using the wrong spark plug can lead to engine problems, so it's crucial to use the correct one.
