How to Change the Oil in a 2008 Kawasaki KLX140R L 19/16
Shop parts for a 2008 Kawasaki KLX140R L 19/16 Dirt Bike.
Performing a regular oil change is one of the most vital maintenance tasks for keeping your 2008 Kawasaki KLX140R L 19/16 dirt bike running smoothly and prolonging its engine life. MotoSport.com brings you this proprietary, expert how-to guide for changing the oil on your KLX140R L, including all tools required, step-by-step instructions, and key call-outs specific to this make and model.
Tools & Supplies Needed
- 3/8” ratchet or wrench set
- Oil drain pan
- Clean funnel
- New engine oil (Kawasaki recommends 10w40 4-stroke motorcycle oil, capacity approx. 1.1–1.2 quarts for KLX140R L)
- New oil filter (Kawasaki OEM part #52010-1053)
- New drain plug gasket (Kawasaki OEM part #11061-0421)
- Clean rags for wiping and cleaning
- CRC Brake Cleaner or similar (optional for cleaning off residual oil)
- Torque wrench (recommended for precise tightening of drain plug)
- Gloves (recommended for protection)
Step-by-Step Oil Change Instructions
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Warm up the engine – Run your KLX140R L for 2–3 minutes to allow the oil to warm up, helping contaminants mix and oil drain more thoroughly.
Tip: Do not overheat; just bring to normal operating temperature, then shut off the engine. - Position the bike & tools – Place the bike upright on its side stand and set your drain pan underneath the engine, directly below the drain bolt location.
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Remove the oil filler cap/dipstick – This is on the right side of the motor. Unscrew and set it aside atop a clean rag. This breaks the vacuum and helps oil drain faster.
Owner call-out: Ensure that the O-ring on the dipstick is not pinched or damaged, and reinstall properly to avoid leaks. - Remove the oil drain bolt – Using your 3/8” ratchet, remove the drain bolt from the bottom of the engine. Be cautious of hot oil. Allow all oil to drain completely into your pan.
- Replace the drain plug gasket – Install a new gasket on the drain bolt to ensure a proper seal and avoid future leaks. Inspect the bolt for wear.
- Reinstall and torque the drain bolt – Thread the bolt back in by hand to avoid cross-threading. Use a torque wrench to tighten to the manufacturer’s spec (typically 10–15 ft/lbs; verify in your owner’s manual).
- Replace the oil filter – On the KLX140R L, the oil filter sits behind a side cover secured by bolts. Remove the cover, take out the old filter, insert the new one (52010-1053), and reinstall the cover. Make sure the O-ring seals are seated correctly and bolts are hand-tightened to spec.
- Fill with new oil – Using a clean funnel, pour in 1.1 to 1.22 quarts of 10w40 4-stroke oil. Do not overfill. Remove the funnel and secure the dipstick/cap.
- Start and check for leaks – Run the engine for 1–2 minutes while monitoring for leaks at the plug and filter cover. Shut off and allow to settle for a moment.
- Check oil level and top up if necessary – Remove, wipe, and fully reinsert the dipstick to get an accurate reading. The oil should be between the “H” (High) and “L” (Low) marks on the dipstick. Add oil if below "L", or remove a little if above "H".
- Clean up – Dispose of old oil and filter properly per local regulations. Clean up any drips or spills with brake cleaner and rags.
KLX140R L-Specific Tips & Call-Outs
- Oil capacity: Aim for 1.1–1.22 quarts; avoid overfilling which can cause pressure issues and leaks.
- OEM parts: Use genuine Kawasaki parts for optimal fit and performance—especially filters (52010-1053) and drain gaskets (11061-0421).
- Dipstick: Check the oil level with the dipstick fully screwed in for the KLX140 series. Oil between “H” and “L” is ideal; above “H” can cause excess pressure and foaming.
- Initial break-in oil: If this is the first oil change, expect the oil to look unusually dark or metallic. This is normal for a new engine's break-in period but should be less apparent in future changes.
- Filter orientation: Ensure the new oil filter is installed in the correct orientation, with O-rings lubricated and seated properly, to prevent leaks or engine damage.
- Cleanliness: Keeping dirt and debris out during the oil change is crucial. Wipe the area around the filler and drain plug before removal.
Why Regular Oil Changes Matter for Your KLX140R L
Fresh oil helps remove heat, lubricate moving engine parts, and ensure smooth shifting—especially under the hard riding conditions most dirt bikes endure. Neglecting oil changes can lead to increased wear, poor performance, and even catastrophic engine damage.
Final Notes
- Change your oil every 10–15 hours of riding or at least twice a season—more often under severe/extreme conditions.
- Always check your owner’s manual for torque specs and part numbers specific to your 2008 KLX140R L.
- Performing oil and filter changes yourself saves money, boosts mechanical confidence, and extends the life and value of your dirt bike.
Keep your Kawasaki KLX140R L running strong—the MotoSport.com way. Quality parts, expert knowledge, and premium service for every rider.
Related Shopping Categories
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Shop Oil Drain Pans for a 2008 Kawasaki KLX140R L 19/16 Dirt Bike.
Shop Tools for a 2008 Kawasaki KLX140R L 19/16 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2008 Kawasaki KLX140R L 19/16 Dirt Bike.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.