If we had to name the one thing that causes the most small-engine repairs, it's fuel - specifically the ethanol-blended gas (E10) sold at most stations. Here's what it does and how to avoid the headache.
Why ethanol is a problem
Ethanol attracts and absorbs water, and it breaks down faster than straight gasoline. In a small engine that sits between uses, it separates, gums up the carburetor, and can corrode parts - leaving you with a machine that won't start when you need it.
How to protect your equipment
- Buy only what you'll use soon. Don't keep gas around for months.
- Use a fuel stabilizer if fuel will sit more than a few weeks.
- Consider ethanol-free gas for small engines - many stations sell it, and it stores far better.
- Run it dry or store it right before winter (see our winter storage guide).
Already gummed up?
If old fuel has already done its damage, a carburetor cleaning or rebuild usually fixes it. Bring it in and we'll get it running again - learn more here.