How to Troubleshoot a Homelite Tiller

Check the fuel tank if the tiller doesn't start. If it's the first time you've used the tiller for the season, empty the gasoline tank, following the directions for your model. Fill the gas tank with fresh gas.

Set the throttle so that it is halfway between the "Slow" and "Fast" setting when starting the tiller. If the throttle isn't in the correct position, the engine either gets too much fuel or not enough to start.

Remove the spark plug, using a spark plug wrench, if the engine doesn't start or if the engine runs unevenly. Replace the spark plug with a properly gapped one recommended by Homelite. Tighten the spark plug with the spark plug wrench, and reattach the spark plug wire. If you see damage on the wire, replace it as well.

Pull out the choke to its full extension when starting the tiller. Once you get the tiller running, push the choke back in. If the engine floods while you are starting the tiller, push the choke in and pull the starter rope several times.

Check the oil level in the motor if you see black smoke coming from the tiller's exhaust. Add more oil if the engine is low, or change the oil entirely, following the directions for your tiller model.

Remove the cover of the air filter, using a screwdriver, if the motor isn't running properly. Replace the air filter and its cover.

Inspect the drive belt if the tines don't rotate or only work part of the time when you engage their gear. Wipe any grease or oil from the belt to see if that is causing it to slip. Check the pulley alignment to adjust belt slippage. Follow the manufacturer's directions for getting the right tension. Replace the belt, if necessary.

Add worm gear oil to the transmission if the tiller doesn't move forward or in reverse when you engage its gear. If that doesn't work, take the tiller to a Homelite service technician.