Wheelbarrows are a great time saver when moving dirt and yard trimmings around the yard. Most wheelbarrows have a single tubeless tire on the front. When the tire goes flat, the wheelbarrow is no longer useful. You can fix a wheelbarrow tire with an automotive tire repair kit. The repair kits are available at auto parts store. The kits contain the tools and plug necessary to seal the hole in your tire.
Set the wheelbarrow upside down so that the tire is facing you. Find the spot where the air id leaking from the tire by rotating the tire. Often there will be a nail or stick that punctures the tire. Once you find the puncture point, pull out the obstruction with a pair of pliers.
Ram the round file, that comes with the repair kit, into the hole in the tire. Push the file in and out of the hole several times to ream the hole and roughen the sides of the hole.
Thread the tar tire plug through the plug tool in your repair kit. The plug tool resembles a large needle eye at the top with a screwdriver handle. Slide the tar plug through the eye of the plug tool so that the tool is around the center of the plug.
Push the plug tool with the tar plug into the hole in the tire. This will be a tight fit, but continue pushing the plug into the tire until only ½-inch is sticking out.
Pull the tire tool out of the tire quickly, leaving the tar plug inside the hole. Trim the tar plug even with the tire with a pair of scissors.
Wrap a ratchet strap around the center of the tire, if the tire beads have separated from the rim. Tighten the ratchet strap until the beads of the tire touches the inside of the rim. The side portion of the tire that makes contact with the inside rim lip is known as the bead of the tire.
Add air to the tire using an air compressor or foot pump just until the tire bead sets and the tire begins to hold air. Loosen the ratchet strap and remove the strap from the tire. Continue filling with air to the recommended PSI on the sidewall of the tire.