3. INSPECTION/ADJUSTMENT Mongoose/KXR 90/50 Reference tip alignment within 1mm of index mark on open side is acceptable. However, the aligning mark on the control lever must never be on the closed side of the index mark, otherwise engine damage will occur because of insufficient lubrication. If the oil pump is not synchronized properly, the following will occur: · Excessive white smoke or hard starting due to pump control lever excessively open · Seized piston due to pump control lever insufficiently open Screws AIR CLEANER AIR CLEANER REPLACEMENT/CLEANING To replace the air cleaner (Mongoose/KXR 90): 1. Remove the seat. (See page 2-3.) 2. Remove the five screws and then remove air filter case cover. Air Filter Case Cover 3. Remove the air filter element, and separate it from the box. Air Filter Element 3-5