The Yamaha YZ250 is an off-road motorcycle that was initially introduced by Yamaha in the 1970s. Since that time, it has become popular with motorcyclists. Tuning up your Yamaha YZ250 is a regular part of maintenance right along with regular oil changes. Purchase replacement spark plugs at your local Yamaha dealership to ensure you get the right plugs for your bike. It will take you approximately 30 minutes to gap your new plug and install it.
Things You'll Need
- Spark plug wrench
- Spark plug gauge
Remove your new spark plug from its package. Gently pry open the wire on top of the spark plug. Set the spark plug gauge's gap at exactly .050 inches. This is the correct gap size for your Yamaha YZ250's plug.
Set the tip of the spark plug gauge inside the wire and then squeeze it closed. This will set your new plug's gap accordingly. One you have gapped your new plug, set it on the side.
Remove the spark plug wire from your old plug and inspect if for any damages.
Use your spark plug wrench to remove the old plug. Turn the wrench counterclockwise to loosen and remove the plug.
Sit the end of the new plug in the spark plug hole and turn it clockwise by hand. Tighten it with your plug wrench. Replace the spark plug wire once the new plug is completely installed.
- "Yamaha YZ250F & WR250F 2001-2003: Service, Repair, Maintenance"; Ron Wright; 2003
How to Install Lights on a YZ250 Yamaha
With most purpose-built dirt bikes ill-equipped to handle the dark of night, most trail riders pack up and head home before the...
How Do I Install Lights on a YZ-250 Yamaha?
A Yamaha YZ-250 dirt bike is designed primarily for motocross racing, sacrificing amenities such as lighting for a lower overall weight. While...
How to Identify a Yamaha YZ250
When trying to identify a motorcycle, you can narrow down the options by knowing the bike's specifications and its general appearance. The...
How to Install a Clutch Cable on a YZ250
Your ability to control the clutch is critical to operating your Yamaha YZ250 dirt bike, which relies on the steel cable that...
How to Change Spark Plugs in a Yamaha 1100 V Star
Changing the spark plugs on any vehicle or motorcycle is part of regular maintenance. This will help to keep your engine running...
How to Change the Oil on a 2005 Yamaha YZ250
Changing the oil in a 2005 Yamaha YZ250 dirt bike is a little more complicated than changing the oil on regular street...
Factory Specifications for Mustang Spark Plug Gaps
Spark plugs are the igniter within an engine. The gap on a spark plug is the distance between the electrodes. Electricity running...