homepostsHow do you change a spark plug on a riding lawn mower?

How do you change a spark plug on a riding lawn mower?

Dennis WaldenNov 22, 2021

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Subsequently, does a riding lawnmower have a spark plug?

Replace your riding lawnmower's spark plug after every 100 hours of use and before storing the mower for the winter months. A damaged spark plug can decrease fuel efficiency, cause the engine to run poorly, leave deposits on the cylinder head and/or cause ignition problems.

Moreover, where are my spark plugs located? The spark plugs are typically located at the top of the cylinder head. The piston moves down the cylinder where it take in a combination of air and fuel. Next, the piston travels back up to the spark plug, compressing the mixture.

Keeping this in view, how do you check a spark plug on a riding lawn mower?

Rewind the rope around the flywheel and turn the lawn mower's ignition switch on. Pull the rope to spin the flywheel and watch for a spark on the original spark plug. If a spark is present, the spark plug is working properly. An absence of spark will require replacement of the spark plug.

How do I know if my lawnmower spark plug is bad?

Here's How to Know if a Lawn Mower Spark Plug is Bad

  1. You can't get the engine to fire up at all.
  2. You have to tug extra hard for longer than usual on the rewind.
  3. Your lawn mower loses power while moving.
  4. The gas runs out quicker than it used to.

How often should you change the spark plug in a lawn mower?

every 25 hours

What is the recommended spark plug gap?

For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how much gap will work best for you.

Who makes the best spark plugs for small engines?

Our Top Picks
  • Best Overall. Champion Copper Plus 71 Spark Plug. Photo: amazon.com. ...
  • Best Bang For The Buck. Maxpower 334058 Spark Plug For Riding Mowers. Photo: amazon.com. ...
  • Upgrade Pick. E3 Spark Plugs E3. ...
  • Best Platinum. Briggs & Stratton 5062K Spark Plug Platinum. ...
  • Best Iridium. Fram Autolite XP5325 Iridium XP Spark Plug.

What size socket do I need to remove a spark plug?

Most spark plugs require a 5/8" (16mm) size spark plug socket. This refers to the size of the flats on the spark plug that are in contact with the socket.

How do I know if my spark plugs need changing?

What symptoms may indicate my vehicle's spark plugs need replacing?
  1. Rattling, pinging or “knock”-like noises. When spark plugs begin to misfire, you may notice unusual noises from the force of the pistons and combustion not working properly. ...
  2. Hard vehicle start. ...
  3. Reduced performance. ...
  4. Poor fuel economy.

What happens if you don't change your spark plugs?

Spark plugs will depreciate over time, so various engine issues will arise if they are not replaced. When the spark plugs do not generate the adequate spark, the combustion of the air/fuel mixture becomes incomplete, leading to loss of engine power, and in the worst-case scenario, the engine will not run.

Can I change my spark plugs myself?

Like rotating tires or changing oil, replacing spark plugs is a job that can be easily, and inexpensively, done in the confines of your own home. Although they don't need maintenance as often as the other two tasks, spark plugs are equally as important and require consistent monitoring.
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About The Author

Dennis Walden

Dennis owns a small farm and loves to grill since his early childhood. He’s a professional cook, but hiking and enjoying the great outdoors is his no less favorite part of life.

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