How to Change the Oil in a 2007 Suzuki RM85 – Complete Guide

Shop parts for a 2007 Suzuki RM85 Dirt Bike.

Changing the oil in your 2007 Suzuki RM85 is a fundamental part of regular maintenance that keeps your dirt bike running smoothly and prolongs engine life. This step-by-step guide, proprietary to MotoSport.com, is tailored specifically to the 2007 Suzuki RM85 and includes the necessary tools, detailed instructions, and model-specific tips every owner should know for a perfect oil change.

Tools and Materials Needed

  • 12mm socket or wrench (for the drain bolt)
  • Oil drain pan
  • Measuring cup or graduated beaker
  • Funnel
  • Shop rags or paper towels
  • New transmission oil (SAE 10W-40, API SG, SH, SJ, SL, or SM with JASO MA/MA1/MA2 classification, as specified by Suzuki)
  • Torque wrench (recommended for precise reinstallation of drain and filler bolts)
  • Gloves (optional, to keep your hands clean)

Preparation and Safety

  • Warm up the engine for about 5-10 minutes. This helps to thin the oil so that it drains more thoroughly.
  • Find a level work area and secure your RM85 vertically, either on a stand or by holding it straight. This ensures accurate draining and correct oil level checks.
  • Allow the engine to cool slightly after warming to prevent burns.

Step-by-Step Oil Change Procedure

  1. Remove the Drain Plug
    • Place the oil drain pan under the engine’s transmission drain bolt.
    • Use the 12mm socket or wrench to carefully unscrew the drain bolt.
    • Let the old oil drain completely—this may take a few minutes for all the oil to drip out. Take this time to wipe the drain bolt and area clean with a rag.
  2. Remove the Filler Cap
    • Take off the oil filler cap located on the right side of the engine. This allows for better oil drainage and readies the port for new oil.
  3. Inspect and Reinstall Drain Bolt
    • Ensure the drain bolt’s washer or O-ring is in good condition and in place. Replace if necessary, as a damaged washer can cause leaks.
    • Reinstall the drain bolt by hand to avoid cross-threading, then tighten to the factory-specified torque of 23 N·m (2.3 kgf-m, 16.5 lb-ft).
  4. Add New Oil
    • Using a clean funnel and a measuring cup, pour exactly 550 ml (1.2 US pt) of fresh transmission oil (SAE 10W-40 with correct API and JASO specs). Do not overfill.
  5. Replace the Filler Cap
    • Secure the filler cap tightly by hand. If your bike’s cap uses an O-ring, inspect it for cracks or wear and replace if necessary to prevent leaks.
  6. Start and Re-check Oil Level
    • Start the engine and let it idle for a few minutes so oil can circulate.
    • Turn off the engine, let the bike stand for five minutes, then check the oil level using the bike’s oil level screw (if equipped) per the owner’s manual: remove the oil level screw; if oil seeps out, the level is correct. Add oil a little at a time if needed.
    • Reinstall the oil level screw and verify it’s secure at 5.5 N·m (4.0 lb-ft).

Model-Specific Tips for the 2007 Suzuki RM85

  • Oil Volume is Crucial: Overfilling or underfilling the 550 ml specification can lead to performance issues or mechanical damage.
  • Transmission Only: The RM85 uses a separate oil chamber for the transmission—do not confuse with the pre-mix oil or engine oil used for the 2-stroke top end.
  • Drain Plug and Filler Cap Torque: Exceeding 23 N·m on the drain plug or 5.5 N·m on the oil level screw can strip threads in the aluminum case. Always use a torque wrench if available.
  • Inspect Seals: Always ensure O-rings or crush washers on bolts and filler caps are in good condition to prevent leaks.
  • Check for Leaks: After the oil change, examine the drain and filler areas for leaks following your first ride.
  • Dispose Oil Properly: Take used oil to a certified recycling center in compliance with environmental regulations.

When to Change the Oil

  • Change the transmission oil every 5-10 hours of riding, after every few rides in extreme or muddy conditions, or at least every month for regular riders.
  • Frequent changes prevent clutch wear and gearbox issues, crucial for a high-revving 2-stroke like the RM85.

Final Notes

  • Oil changes are a simple, cost-effective way to preserve your RM85’s performance and reliability. Always use the oil type and volume specified by Suzuki.
  • For any unclear steps or unique wear, consult your 2007 Suzuki RM85 owner’s manual or reach out to an authorized Suzuki technician.

Related Shopping Categories

Shop Motor Oil for a 2007 Suzuki RM85 Dirt Bike.

Shop Oil Filters for a 2007 Suzuki RM85 Dirt Bike.

Shop Oil Drain Pans for a 2007 Suzuki RM85 Dirt Bike.

Shop Tools for a 2007 Suzuki RM85 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2007 Suzuki RM85 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.