Internal combustion requires fuel to mix with air. The carburetor manages this for Mcculloch chain saws, just as for any small gas-powered lawn tools. Needles regulate the amount of fuel and air that are mixed. The needles are controlled by three adjustment screws: an lazy, a low-speed and a high-speed screw. Carburetors are pre-set by […]

A lawn mower motor works on precisely the same principal as the one in your automobile — but on a much reduced scale. An oil leak in your mower, like one in your vehicle, might indicate that petroleum is oozing through barriers that should contain it. Sometimes, however, oil stains on the ground come from […]