How do I know if my lawn mower spark plug is bad?
Here's How to Know if a Lawn Mower Spark Plug is Bad
- You can't get the engine to fire up at all.
- You have to tug extra hard for longer than usual on the rewind.
- Your lawn mower loses power while moving.
- The gas runs out quicker than it used to.
In this regard, where is the spark plug on a riding lawn mower?
Locate the spark plug(s).
On a walk-behind or riding lawn mower, they're usually near the front of the engine. On zero-turns, look near the back of the engine on the sides. Disconnect the spark plug lead and clean around the spark plug to remove any debris. Remove the spark plug using a spark plug socket.
Furthermore, what size spark plug do I need for a riding lawn mower?
Ideally, most automobile spark plugs use a thread size of about 14mm thread why those of lawn mower range between 10 to 12 mm. Because of these differences in thread sizes, they just won't fit into the same hole or the unit in which the plug is to be fit in.
Will a bad spark plug cause a lawn mower to stall?
Faulty spark plug warning signs
The engine misfires or runs rough. The engine starts, but stalls shortly after. There is a noticeable increase in fuel consumption during normal equipment use.