Cleaning Your UTV Spark Arrester

What is a Spark Arrester?

A spark arrester is a device that prevents flammable particles being expelled from a combustion source. Though spark arresters are commonly found on combustion engines such as the gas or diesel engine in your UTV, they are also often found on chimneys for fireplaces and wood stoves. Utilizing a spark arrester is especially important for wildfire prevention in wooded, grass-, or brush-covered land.

How Does a Spark Arrester Work?

The spark arrester on your Yanmar Bull or Longhorn UTV works by trapping any embers or carbon deposits before they exit the tailpipe. They are caught in a fine mesh screen that allows the exhaust to pass through, but no solid material. It is very common for local laws to require you to have a working spark arrester on your UTV when operating on public land.

How to Clean the Spark Arrester on Your Yanmar UTV

It’s important to keep the spark arrester clean to improve exhaust flow and maximize your UTV’s performance. A noticeable decrease in power could be the result of a clogged arrester. Fortunately, this regular maintenance is simple to complete with a few basic tools. Here’s what you need to know to clean your spark arrester.

Tools Needed

Cleaning your spark arrester will be much easier with these essential tools:

Ratchet
8 mm socket
5-inch extension
Wire brush
Gasket
Torque wrench
Gloves

Cleaning Your Spark Arrester

Once you’ve gathered the necessary tools, you’re ready to get to work. Always make sure the engine is stopped and the exhaust system has cooled to avoid burn risk. Here are the steps you should follow to keep your spark arrester clean and performing at its best.

The spark arrester can be found at the rear of the UTV on the driver’s side. Remove the four 8 mm bolts from the exhaust. This will allow you to access the arrester.
Remove the arrester from the UTV and place it on a shop cloth or surface you don’t mind getting dirty. Then, scrub the arrester with the wire brush to remove all the built-up carbon. Continue until the sliver of the metal shows.
Check the gasket on your exhaust for any tears. If it is damaged, replace it with a new gasket from an authorized Yanmar dealer.
Place the spark arrester back into the exhaust with the exhaust tip facing straight down. Reinsert the four 8 mm bolts and tighten them to 7.2 ft-lb with your torque wrench. That completes the cleaning of your spark arrester.

Connect With Yanmar

From UTVs to tractors, we have the hard-working machines you need to conquer the toughest jobs your property has to offer. When you own a Yanmar, you can trust our team will be here every step of the way with helpful resources and an industry leading customer experience. If you have questions or would like to learn more, please don’t hesitate to connect with us online or give us a call at 678-551-7369.