Oil Change

My next step was to do a routine oil change. Its important to change the oil frequently on motocross motors, and the manual recommends changing the oil as frequently as every 10 hours. While the oil change is fairly basic, its still more difficult than changing the oil in most cars. The Polaris Outlaw 450 mxr uses the same oil for the motor and transmission, and the oil system contains 2 oil filters, as well as two oil screens.

Both of the motor's oil filters must be replaced every oil change, as you can see there is a short and long filter. The oil screens on the other hand can be reused.

The first step of the oil change is to remove the plastic guard that protects the underside of the ATV. The second step is to  remove the fill plug, and then the drain plug to drain the oil completely. After cleaning the fillings off the magnetic drain plug and reinstalling it you can move on to oil screens. The long oil screen is located just beneath the shift lever, and the short screen is underneath the motor, both screens must be removed and cleaned with compressed air, before reinstalling. The long filter is quite difficult to reinstall due to its size and location. Next are the filters, the filters are both located in housings on the left side of the motor.

The filters can easily be removed, however there was some old oil in the filter housing that would drain, installing the new filter is fairly simple, but a little bit of a mess.The filters should be filled with oil before installation, and naturally oil gets everywhere when you try to install them. When the oil filters are in you simply add 1.2 liters of the correct oil.

To make sure oil levels are correct and the motor and gear box have a sufficient amount of protection, the motor must be run for a few minutes to distribute the oil. There is a sight glass beside the rear brake pedal on the right side of the bike that can be used to view oil levels, when the level is about 1/3 cold or 2/3 warm, it is at the correct level.

Its important to check the oil level frequently, a decreasing level indicates, a leak or that the motor is burning oil, and an increasing level indicates that water or gas has contaminated the oil. Both of these scenarios can lead to damaged if not addressed properly.