For mowers that don’t seem to have a brake knob, try pushing down the brake pedal to engage the parking brake.
Some mowers, particularly those without parking brake knobs, require you to hold down the brake as you shift gears.
To replace the filter, twist it clockwise. You may need an oil filter wrench to help pull it out. Rub the filter with engine oil, then place the filter back and tighten it with the wrench. [3] X Research source
If the plug is rusty or corroded, replace it. You can get spark plugs cheaply at a hardware store. Bring in your old spark plug or have your mower’s model number to find a matching plug.
Solenoids can be ordered online or bought from where you got your mower. Make sure you have your model number on hand so you get the right one.
The battery can be tested with a voltmeter to see if it still produces a charge. Replacement batteries will work if they are of the same size and voltage, but bring in your old battery or have the mower’s model number on hand to find the best match. [7] X Research source
Replace a damaged or excessively dirty filter with a new one from a hardware store.
If the carburetor appears eroded and gas refuses to flow after cleaning, replace the carburetor. Take it out by unscrewing the throttle rod, choke rod, studs, air intake, and fuel solenoid. Reassemble the connectors in the same spot. [10] X Research source To get a fitting carburetor, get one of a similar size. Bring the carburetor to a store or have the mower’s model number on hand.
