Engines: September 2009 Archives

 Adjusting your ATV valves is important in maintaining peak performance and reliability. Though adjusting your valves is not difficult, is does require some patience and accuracy. On a single cylinder engine you have one set of intake valves and one set of exhaust valves. This will make for easy adjusting. When you’re adjusting a twin cylinder engine, there are two sets of exhaust and intake valves. The adjusting will be the same, just work on one cylinder at a time.


Before you start I recommend cleaning your ATV. Where we are going dirt is not allowed! Make sure you have a manual or know what your settings are. Take off your seat and remove any plastic needed to reach your valve covers. Once you reach your valve covers you will have to know which cover is your exhaust and intake. The easiest way of knowing the difference is that the exhaust valves will be located close to your exhaust pipe. Hints: The name exhaust. The intake valves will be located close to the carburetor or fuel injector. Again, hint the name intake because the motor must intake gas to run. Setting your valves sets the proper length of time to be open and closed while running.