How+to+change+the+air+filter+and+oil+on+a+Yamaha+YZ+250

Changing the Air Filter and Transmission Oil on a 1999 Yamaha YZ250 The instructions in this guide will take you step by step through the two most important preventative maintenance procedures that can be done by the average dirt bike owner. By performing these simple maintenance procedures before your ride will ensure that you and your bike have a great and hassle free experience. To get started you should have a space on level ground preferably a garage but any level surface will do. Tools needed:

* 12mm wrench


 * 1L SAE 10w30 oil
 * ¼’’ drive ratchet,
 * Dirt bike stand
 * 2 pair of disposable gloves
 * Funnel
 * Oil catch pan
 * Clean up rags
 * Foam air filter cleaner and oil,
 * 3’’ extension
 * 8mm ¼’’ socket

Air filter. Tools and supplies Needed, 8mm ¼” drive socket, 3” ¼’’ drive extension, ¼’’ drive ratchet, disposable gloves 1 pair, foam air filter cleaner and oil 1. Remove seat-mounting bolts (size: 8mm) located horizontally on either side of the rearmost portion of the seat
 * Before continuing place bike on stand

2. With seat bolts removed lift the rear of the seat 1-2’’ and slide back to remove the seat



3. The air box is now open and the filter is ready to be removed, with disposable gloves on, remove the bolt with a “wing-nut” style head that is protruding from the back of the air filter. The air filter element and fitting guide are now free. Remove the filter from the filter guide.





4. The filter element (the foam part) for dirt, tears, or any other abnormal wear. The element should be lightly coated in oil to ensure maximum protection for the engine. Caution: DO NOT twist the air filter element when squeezing out solvent or oil. 5. If any tears or holes are found replace the air filter element. 6. If the filter is dirty, clean with air filter cleaner solvent. When filter is clean squeeze (DO NOT twist) excess solvent out. Let dry 7. If filter is dry or found clean, take care to apply oil evenly on both sides of the entire surface of the filter element. Once again taking care not to twist, squeeze any excess oil from the element 8. To reinstall reverse the removal steps

Transmission oil. Tools and supplies needed: 8mm ¼’’ drive socket, 3” ¼’’ drive extension, ¼’’ drive ratchet, 14mm wrench, oil catch pan, clean up rags, funnel, 1L SAE 10w 30 1. If the oil has not been changed in the last 5-7 hours of operation then place oil catch pan below the oil drain plug located on the bottom of the engine, remove the oil plug (size: 12mm) with a wrench and ensure all of the oil is drained, reinstall the drain plug.



2. If the oil is still within operational time remove the Transmission oil level check bolt (size: 8mm). If oil runs out of the bolt hole reinstall the bolt, the oil level is correct, if not add oil (SAE 10w30) into the oil filler until it flows out of the bolt hole and reinstall the transmission oil level check bolt.



Caution: After removing any bolts, always check for signs of leaks, leaking oil can cause major internal damage to the engine and its components

Making these procedures into habits will extend the life of your engine greatly, decrease the amount of money spent on repairs, and increase time spent riding. online pc repair [|lube & filter change Georgetown Tx]