How to Change the Oil in a 2020 Suzuki RM85

Shop parts for a 2020 Suzuki RM85 Dirt Bike.

Maintaining your 2020 Suzuki RM85 is vital for performance and engine longevity. One of the most important maintenance procedures is changing the transmission oil regularly. Follow this step-by-step guide, proprietary to MotoSport.com, to ensure you do the job correctly and safely every time.

Tools and Supplies Needed

  • Socket wrench (with extension)
  • Drain pan
  • Measuring cup (500-600ml capacity)
  • SAE 10W-40 oil, API SG, SH, SJ, SL, SM, or SN with JASO MA/MA1/MA2 rating
  • New crush washer (recommended)
  • Clean rags or towels
  • Oil funnel (small)
  • Torque wrench
  • Gloves (optional)
  • Stand or block to keep bike level

Preparation and Safety

  • Make sure the engine and exhaust are cool to the touch to avoid burns.
  • Work in a well-ventilated area on a level surface.
  • Wear gloves and eye protection when working with engine oil.

Step-by-Step Oil Change Procedure

  1. Warm up the Engine
    • Start your RM85 and let it idle for a few minutes. This thins the oil, allowing it to drain out more easily.
      Tip: Do not ride the bike or let it get hot—just a short idle for 2–3 minutes is sufficient.
  2. Secure and Level the Motorcycle
    • Place the bike on a stand or use blocks to keep it upright and level.
  3. Remove the Filler Cap
    • Locate and remove the oil filler cap on the right side of the engine. Set it aside on a clean surface.
  4. Drain the Oil
    • Position your drain pan directly under the oil drain plug, located beneath the transmission case.
    • Using a socket wrench, carefully loosen and remove the drain plug.
      Special call-out: The 2020 RM85‘s oil drain plug should be torqued to 23 N·m (16.5 ft-lb) when reinstalling. Be cautious not to overtighten or strip threads.
    • Allow all the oil to drain. This may take a few minutes. Wipe the area clean with a rag.
    • Replace the drain plug, optionally with a new crush washer, and tighten to specification (23 N·m / 16.5 ft-lb).
  5. Add New Oil
    • Insert a funnel into the filler opening.
    • Measure out exactly 550 ml (about 18.6 oz) of SAE 10W-40 oil, API SG or later, JASO MA/MA1/MA2 rated, and slowly pour it in.
      Do not overfill—overfilling can cause engine/transmission issues.
  6. Check the Oil Level
    • Replace the filler cap securely.
    • Start the engine and let it run for a couple of minutes, then shut off and let stand for 2–3 minutes to settle the oil.
    • With the bike upright and level, remove the oil level check screw (on the right side of the engine) to verify oil is at the correct level. Oil should just begin to seep from the check hole.
    • If oil does not come out, add a small amount at a time until it does. Replace the check screw and tighten to specification (5.5 N·m / 4.0 ft-lb).
  7. Final Steps
    • Wipe any spilled oil from the engine and surrounding areas.
    • Dispose of old oil responsibly—bring it to a recycling center or approved facility.
    • Take your RM85 for a short ride and recheck for leaks or drips. Inspect the oil level once more afterward, especially after the first ride.

Model-Specific Call-Outs for the 2020 Suzuki RM85

  • The oil capacity is 550 ml for each change. Overfilling is a common mistake.
  • Always use JASO MA/MA1/MA2 certified oil to ensure correct clutch performance and engine protection.
  • The oil drain plug’s correct torque is crucial—do not overtighten to avoid stripping the pan threads.
  • Your oil check screw lets you quickly verify the level; do not skip this safety step.
  • For easier oil draining, warming the engine is recommended but avoid draining while the engine is hot to prevent burns.
  • If you ride in severe conditions or race often, consider changing the oil more frequently than the manual recommends.
  • Keep the motorcycle perfectly level when checking the oil level—a tilted bike results in an inaccurate reading.

Conclusion

Changing the oil in your 2020 Suzuki RM85 using the right tools and OEM-recommended products ensures lasting performance and reliability. Always refer to your owner’s manual for periodic maintenance intervals and specifications. For all your Suzuki RM85 maintenance parts and tools, trust MotoSport.com for quality selections and expert support.

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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.