How to Change a Spark Plug on a YFZ 450?

Answer Yamaha's YFZ450 all-terrain vehicle relies on an NGK-produced CR9E spark plug to ignite a combustible fuel mixture within the engine. The spark plug will be subjected to extreme pressure and heat d... Read More »

Top Q&A For: How to Change a Spark Plug on a YFZ 450

How to change a spark plug?

Changing spark plug wires are fairly easy and usually requires no tools. Each spark plug wire is connected to a spark plug, and brings the electrical spark to the spark plug in order to ignite the ... Read More »

How to Change & Gap a Spark Plug?

The average person with the right tools can handle changing the spark plugs on your vehicle or piece of lawn equipment. Setting the gap on new spark plugs is a very important part of the installati... Read More »

How to Change a Spark Plug on a Lawn Boy?

Lawn Boy lawnmowers contain small, simple engines that employ single spark plugs to ignite the air/fuel mixture to keep the mower running. Depending on usage and environment, it's not a bad idea t... Read More »

How to Change a Spark Plug in a Jeep TJ?

The Jeep Wrangler TJ has two engine options, a 4.0-liter six-cylinder or a 2.5-liter four-cylinder. Both engines have spark plugs that are along the side of the cylinder head; the procedure for cha... Read More »