How to Change the Oil on a 2018 Kawasaki KLR650: A Step-by-Step Guide

Shop parts for a 2018 Kawasaki KLR650 Dirt Bike.

If you ride a 2018 Kawasaki KLR650, keeping up with routine oil changes is crucial for engine longevity and smooth operation. Here’s a comprehensive, MotoSport.com proprietary guide to changing the oil in your KLR650—with special tips specifically for this model year.

Tools and Supplies Needed

  • 8mm socket
  • 17mm socket
  • Socket wrench/ratchet
  • Torque wrench (recommended for accurate tightening)
  • Pliers
  • Oil catch pan/drain pan
  • Funnel
  • Rags or shop towels
  • Latex or nitrile gloves (for clean hands)
  • Jug for used oil (for recycling)
  • Oil filter (e.g., Kawasaki OEM or HF123)
  • Engine oil (10W40, 2.6 quarts)
  • New crush washer for drain plug (optional but recommended)
  • Paddock stand (optional, for increased stability)

2018 KLR650 Oil and Filter Change Steps

  1. Warm the engine: Start your KLR650 and let it idle for 3–5 minutes. This helps the oil warm up so it drains completely and more easily.
  2. Remove the oil filler cap: With the bike off, unscrew the oil filler cap on the right side of the engine. This allows for better drainage.
  3. Position your drain pan: Place your oil catch pan directly under the engine’s oil drain bolt (bottom of the crankcase).
  4. Remove the drain bolt: Use your 17mm socket to carefully loosen and remove the drain bolt. Be careful—the oil may be hot. Let the oil drain completely.
    • 2018 model-specific callout: Don’t lose the crush washer on the drain bolt. Replace if it looks worn or deformed to prevent leaks.
  5. Rock the bike gently: With the oil draining, tilt the KLR650 upright (if it’s safe and you have a helper) to encourage every last bit of oil to exit.
  6. Remove the oil filter cover: The oil filter is behind a round cover secured with three 8mm bolts. Use the 8mm socket to remove these. Pry the cover off gently using a rag and flat-head screwdriver if it’s stuck, taking care not to damage the tab or the gasket.
  7. Remove and inspect the old oil filter: Pull out the filter. Take care to note the orientation—the “beveled” side always faces into the engine. Remove the old O-ring from the filter cover and inspect it for cracks or flattening. Replace if necessary.
  8. Clean and prep new filter: Wipe out the filter housing and filter cover with a clean rag. Lubricate the new filter’s O-rings with a dab of fresh oil. Insert the filter (beveled side in), and align the cover with arrows/tabs as on the original.
  9. Reinstall the filter cover: Start the bolts by hand to avoid cross-threading. Use the 8mm socket to tighten snugly, but don’t overtighten. Final torque is about 7 lb-ft (10 Nm).
  10. Reinstall the oil drain bolt: Clean the bolt and threads. Install a new crush washer if available. Reinstall by hand, then tighten with the 17mm socket (22 lb-ft / 29 Nm torque).
  11. Add new oil: Place a funnel in the filler hole. Pour in 2.6 quarts (2.5 liters) of high-quality 10W40 motorcycle oil. Replace the filler cap securely, ensuring its O-ring is in good shape.
  12. Inspect and check for leaks: Wipe down any spills. Start the engine and let idle for a minute. Check under the bike—especially around the oil drain and filter—for leaks. Shut off and let sit two minutes, then check oil level via the sight glass (right side of the engine).
    • If low, top off as needed. Don’t overfill.
  13. Dispose of used oil responsibly: Pour used oil into a sealed jug and bring it to a proper recycling center.

2018 Model-Specific Tips for the Kawasaki KLR650

  • The drain bolt is low on the engine; always check that your old crush washer is in good condition to avoid leaks.
  • Be extra gentle removing the filter cover—the alignment tab can easily break if forced.
  • Oil capacity is 2.6 quarts—overfilling can cause excessive oil consumption or leaks.
  • Make sure the O-ring on the filter cover is undamaged and in place before reassembly, or you risk leaks.
  • After the first oil change, check your oil level again after a short ride—it often drops slightly as oil circulates.

Pro Tips

  • Keep all your fasteners and small parts in a tray or magnetic dish so nothing gets lost.
  • Torque wrenches help prevent overtightening, which strips threads or cracks aluminum engine parts.
  • Always use motorcycle-specific oil, not automotive oil, due to clutch and gearbox protection requirements.

Following this guide ensures your 2018 Kawasaki KLR650 engine stays lubricated and protected, giving you confidence on every ride. For OEM oil and filters, always shop MotoSport.com for guaranteed fit and quality parts.

Related Shopping Categories

Shop Motor Oil for a 2018 Kawasaki KLR650 Dirt Bike.

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Shop Oil Drain Pans for a 2018 Kawasaki KLR650 Dirt Bike.

Shop Tools for a 2018 Kawasaki KLR650 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2018 Kawasaki KLR650 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.