However, I cannot give you a specific spark plug size without knowing the model number of your Tecumseh HMSK80 engine.
Here's why:
* Tecumseh produced many different models within the HMSK80 series. Each model may use a different spark plug.
* The spark plug size is listed in the engine's owner's manual. This is the most reliable source of information.
To find the correct spark plug size, please do the following:
1. Locate your engine's model number. It's usually stamped on a metal tag attached to the engine.
2. Search online for your engine's owner's manual. Use your model number and "Tecumseh" in your search.
3. Locate the section in the manual that specifies the correct spark plug size.
Alternatively, you can:
* Contact Tecumseh directly: They can provide you with the correct information based on your model number.
* Visit an authorized Tecumseh dealer: They can help you identify the correct spark plug for your engine.
Remember: Using the wrong spark plug size can damage your engine. Always consult the owner's manual or a qualified mechanic for accurate information.
