How to Change the Oil in a 2007 Suzuki DR-Z400SM

Shop parts for a 2007 Suzuki DR-Z400SM Dirt Bike.

Regular oil changes are crucial to keeping your 2007 Suzuki DR-Z400SM running smoothly and maximizing engine life. In this detailed MotoSport.com proprietary guide, you'll find all the tools, step-by-step procedures, and model-specific tips you need for a safe and effective oil change.

Tools and Supplies Needed

  • Ratchet with 8mm, 12mm, and 17mm sockets
  • Torque wrench
  • Drain pan
  • New oil filter
  • 10W-40 motorcycle oil (2 quarts, or about 1.8L with filter change)
  • New drain plug washers (optional, but recommended)
  • Funnel
  • Rags or shop towels
  • Gloves and safety glasses (optional, but recommended)

Pre-Change Preparation

  • Refer to your OEM service manual for torque specs and recommended procedures for your specific year and model for maximum accuracy and peace of mind.
  • Warm up the engine for a few minutes. Warm oil drains more thoroughly, carrying contaminants with it.
  • Place the bike on a level surface or center stand for stability.

Step-by-Step Oil Change Instructions

  1. Remove the oil filler cap/dipstick from the top of the frame.
    • This releases crankcase pressure and helps oil drain more freely.
  2. Drain the engine oil.
    • Position your drain pan under the 17mm drain bolt on the bottom of the crankcase (left side, behind the shifter).
    • Loosen and remove the drain bolt and washer. Allow oil to drain completely.
    • Check the washer for wear or damage; replace if necessary.
    • Reinstall the drain bolt and washer, and torque to 15 ft-lbs (check your specific manual for torque).
  3. Drain the frame oil.
    • Move the drain pan under the 12mm drain bolt on the bottom of the frame, near the front of the engine.
    • Remove the frame drain bolt and washer. Again, allow oil to drain, then inspect and replace the washer if necessary.
    • Reinstall and torque to spec.
  4. Replace the oil filter.
    • Use your 8mm socket to remove the oil filter cover on the right side of the engine.
    • Take out the old oil filter. Inspect and clean the oil filter cover, and check the o-ring condition.
    • Install a new filter, making sure it's correctly seated and oriented (check for a “front” marking).
    • Reinstall the cover and torque its bolts evenly and to spec.
  5. Refill with fresh oil.
    • Insert a funnel into the oil filler opening at the top of the frame.
    • Pour in 1.8L (1.9 quarts) of 10W-40 oil if changing the filter, or slightly less (1.7L) if not changing the filter. Slightly underfill initially; you can always add more.
  6. Check for leaks and run the engine.
    • Reinstall the oil filler cap.
    • Start the engine and let it idle for 3–5 minutes, then shut it off and wait a couple minutes to allow oil to settle.
    • Check for leaks around drain bolts and the filter cover.
    • Remove the dipstick, wipe it clean, reinsert fully, then check oil level.
    • Add oil if necessary to bring the level within the recommended range.
  7. Final checks.
    • Recheck torque on drain plugs and filter cover after cooling.
    • Inspect that no tools or rags are left around the engine.
    • Take your DR-Z400SM for a test ride and re-inspect for leaks afterwards.

Model-Specific Call-Outs for the 2007 Suzuki DR-Z400SM

  • The frame oil drain bolt is unique to the DR-Z400SM, S, and E models and is easy to overlook—be sure to drain both the crankcase and the frame for a complete oil change.
  • Oil capacity is 1.7L (without filter change) or 1.8L (with filter change). Overfilling can cause engine or breather issues.
  • Replace or inspect both drain plug washers each oil change.
  • Always check for the hidden frame filter screen during major services (consult your service manual for intervals and procedures).
  • The oil change procedure is unchanged from 2000–2025, making most guides for earlier DR-Z400 models valid for a 2007 DR-Z400SM as well.
  • Keep the bike upright when checking oil and topping off, as tilt can result in inaccurate readings.

Tips for Best Results

  • Warm up the bike to operating temperature for best oil flow.
  • Change the oil after the first 600 miles of new ownership, then every 3,500 miles or as your riding conditions demand.
  • Always dispose of used oil according to local regulations.
  • Check your service manual for other periodic maintenance items to address while you're in the garage.

Following this guide will help keep your 2007 Suzuki DR-Z400SM running reliably on trails and roads, with confidence from MotoSport.com.

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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.