How to Change the Coolant in a 2017 Suzuki RM85: Step-by-Step Guide

Shop parts for a 2017 Suzuki RM85 Dirt Bike.

Routine coolant replacement is essential for maintaining optimum engine temperature and prolonging the life of your 2017 Suzuki RM85. This guide is tailored exclusively for MotoSport enthusiasts, with specific considerations for this nimble, two-stroke dirt bike. Follow these detailed steps for a safe and efficient coolant change—no guesswork required.

What You Will Need

  • Fresh engine coolant (570 ml capacity for the RM85–see below)
  • Drain pan
  • Socket wrench (for removal of drain plug)
  • Clean rags
  • Protective gloves and eye protection

Preparation

  • Ensure the engine is completely cool before servicing. Do not open the radiator cap on a warm engine—hot coolant or steam may cause serious burns.
  • Place the motorcycle upright on a block or stand to keep it level and secure.

Removing Old Coolant

  • Remove the radiator cap slowly to release any remaining pressure.
  • Position the drain pan under the engine. Locate and remove the coolant drain plug (check underneath the water pump), and disconnect the lower radiator hose to thoroughly drain the old coolant.
  • Allow all coolant to fully drain. Inspect the fluid for signs of contamination or debris–milky or rusty coolant could indicate internal issues needing attention.

Reinstalling Drain Plug and Hose

  • Once draining is complete, reinstall the drain plug and securely reconnect the radiator hose.
  • Tighten the drain plug to the recommended specification in your model's service manual.

Adding New Coolant

  • Refer to the RM85's coolant capacity: 570 ml (1.2/1.0 US/Imp qt). Pour the new coolant in slowly to avoid air pockets.
  • Reinstall the radiator cap firmly.

Bleeding the Cooling System

  • Start the engine and let it run for several minutes. This helps to eliminate any trapped air and circulates the new coolant.
  • Shut off the engine, allow it to cool fully, and recheck the coolant level. Top off if necessary—coolant may settle as remaining air bubbles are purged.

Final Checks

  • Carefully inspect for leaks at the drain plug, hose connections, and around the radiator cap. Leaks will compromise system pressure and cooling efficiency.
  • For durability, inspect the radiator cap using a pressure gauge periodically. The correct release pressure for the RM85 is 95–125 kPa (13.5–17.8 psi).

Model-Specific Tips for the 2017 RM85

  • This model uses a relatively small coolant volume. Overfilling or underfilling can significantly affect performance—measure carefully.
  • Consider replacing radiator hoses and clamps if they show any sign of swelling, hardness, or cracking for added insurance against leaks.
  • Factory-spec coolant is recommended to prevent corrosion and optimize performance for motocross or trail riding.
  • Always check for proper coolant recovery in the overflow reservoir after your first ride post-change–top up if necessary to account for trapped air escaping the system.

Staying ahead on regular coolant changes for your RM85 ensures consistent engine temperatures and championship-ready reliability on every ride. Keep your bike running at its best with genuine and performance parts from MotoSport.

Related Shopping Categories

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Shop Radiator Hoses for a 2017 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.