Oil Change Procedure
Stuff you need
Once you decide to change the oil in your bike, the process is not that difficult. First, gather together the needed supplies. You'll need 2 quarts of oil, a filter and a drain pan. You should also have a new drain plug washer (part number 92065-097). This is a very common part, fitting dozens of Kawasaki motorcycles. Your dealer should have some around.
One other thing that you will have to have before you start changing the oil is a torque wrench. This is mandatory. Learn how to use it before you change your oil for the first time. Don't practice on your drain plug.
Warm up the engine by riding it. Turn off the engine and let it sit for a couple minutes. Place the bike on the centerstand. Removing the lower fairing is optional. Some people prefer to do it because it's quick, gives you a bit more room in which to work, and minimizes mess; others think it's not worth the effort, so it's up to you; it's held on by 7 bolts.
First, remove the drain plug and drain the oil into a suitable 3+ quart pan (don't burn yourself). Removing the oil filler cap will help the oil drain faster. Let the oil drain until it's obvious that no more is going to come out. This will usually be 5+ minutes.
The drain plug and filter bolt can be quite stubborn to remove, so use a 6-point socket (17mm for the oil filter and drain plug) and long-handled ratchet, shown below. A 6-point socket is superior to a 12-point because it fits the bolt/nut better, providing more surface area and less chance of rounding off the head. In some more drastic cases a breaker bar may be helpful. Do not use your torque wrench to loosen the drain bolt; torque wrenches are only for checking torque as you tighten a bolt.
Make darn sure you are turning the wrench in the right direction. Make sure you don't spin the bike or pull it over on top of you while you're putting pressure on the ratchet. If the bolt is so tight that you really have to pull hard on it, get some help so these things don't happen. Other suggestions for supporting the bike.
After the oil drains, remove the filter bolt and plate, just in front of the drain bolt. More oil and a dirty filter element will come out. Be sure to keep all the springs/grommets in order. Once the oil is drained and the filter removed, check the filter for debris. If you see metal particles or other debris, it could mean serious engine damage is occurring. This filter looks clean, so it's time to install the new filter and o-rings.
Before replacing the filter, install new o-rings on the filter bolt and plate. Coat the O-rings with oil before installation. Not doing so could cause a tear when you put everything back on.
Note that many riders do not replace the small o-ring at every oil change; if you don't separate the bolt from the plate, you should maintain a good seal.
Once the o-rings are in place, insert the bolt back into the filter plate. The oil filter assembly consists of the bolt/plate, a spring, a washer, the filter element, and the filter retainer. Note that the washer has a tendency to stick to the filter; check for it before pitching the old filter.
Place the spring over the bolt, follower by the washer as shown.
Then, place the filter element on the bolt. Dip your finger in your new oil and spread a bit around the two inner grommets on the filter, where it rides over the bolt. Then add the retainer as shown.
The filter assembly is now ready to install. Dip your finger in your new oil and spread a bit around the large o-ring to prevent it from catching and being pulled out of its groove as you tighten the assembly. Screw the bolt into the crankcase, making sure the o-ring stays in place. Tighten the filter bolt to 14.5 ft/lbs.
Here is a diagram of the filter assembly.
Make sure the drain plug washer is installed on the drain plug and tighten the drain plug to 14.5 ft/lbs (the same as the filter bolt). Use a new drain plug washer (92065-097 GASKET, 12X22X2). Many people don't replace these every time, but they're cheap. Stock up. When you reuse the crush washer, you run the risk of oil seeping out around the already compressed (old) crush washer. Why skimp on a $0.33 part (92065-097 from ronayers.com)? Two alternatives are Hyundai part #21513-23001 or Nissan #11026-01M02.
The torque value of 14.5 ft/lbs is very important. Don't over-tighten it or you risk stripping the threads out of the engine case. This is difficult to fix.
After you have both the filter and the drain plug installed and properly torqued, open the filler cap on the right side of engine if you haven't already. Fill with 1.5 quarts of your favorite oil. Wait a minute, then add a very small amount of oil at a time until the level in the sight glass is up to the upper mark. Replace the filler cap. Start the engine, make sure the oil light goes out, and let the engine idle for a minute. Shut the engine off and wait a few minutes before checking the window again. Add oil as necessary to bring the level up to the upper mark (when both wheels are on the ground). Repeat until the oil level is consistently in the center or higher of the view window. Keeping the oil at or close to the upper mark is desirable, but do not overfill it, as you could blow a gasket. This is why you're adding oil bit by bit.
You may also want to check the old oil for any contamination or debris. Dispose of old oil responsibly. (Recycle)
Make sure you check for leaks, and check your oil level frequently. Ride it for a few minutes and check for leaks again. Make sure there is no oil leaking from around the filter assembly or drain plug.
Airbox drain hose service
Oil vapor and pressure in the engine crankcase are vented through a hose into the airbox. The idea is to burn the oil vapors off during normal engine operation. Sometimes liquid oil collects in the bottom of the airbox, instead of being burned during engine operation. To prevent the airbox from filling up with excess oil, there is a drain tube in the bottom of the airbox to allow the excess oil to drain. Oil in the airbox can be completely normal, especially if you do a lot of high-speed riding.
This oil should be drained periodically, although don't expect much to come out under normal circumstances. There is a drain plug at the bottom of the hose. Find the end of the hose, right down by the swingarm and clutch release lever on the right side. You won't need to remove any body parts to get at it. You'll find a metal clip holding the plug in. Use a pair of pliers to squeeze the clip and move it up the hose. You can then use the pliers to pull the plug out. Just twist it a little; it's not threaded. Drain any oil that may have accumulated in the tube. Have a rag or small container handy to catch the oil. Replace the plug and move the clip back in place to hold it in.
Often forgotten: Checking the oil screen
This is something that should be done at least by the second or third oil change on a new bike, and on the first on a used one. For more information, look here.