Changing the Coolant on a 2007 Suzuki RM85: Step-by-Step Guide

Shop parts for a 2007 Suzuki RM85 Dirt Bike.

Regular coolant changes are vital for keeping your 2007 Suzuki RM85’s engine performing at its best and preventing overheating or corrosion. Follow this exclusive MotoSport.com guide for a smooth, safe coolant replacement specific to your RM85.

What You’ll Need

  • Fresh engine coolant (570 ml capacity recommended)
  • Drain pan
  • Socket wrench set
  • Distilled water (optional, for flushing)
  • Shop rags
  • Protective gloves and eyewear

Preparation – Safety First

  • Make sure the engine is completely cool before you begin.
  • Working on a warm system may cause scalding from hot coolant and steam.
  • Place the bike securely on a stand or block for stability.

Step 1: Remove the Radiator Cap

  • Locate the radiator cap at the top of the left radiator.
  • Slowly twist the cap off – never do this while the engine is hot.

Step 2: Drain the Old Coolant

  • Position a drain pan below the water pump (right side of the engine).
  • Locate and remove the coolant drain plug (bottom of the water pump cover).
  • Disconnect the lower radiator hose if necessary for complete drainage.
  • Allow all coolant to empty into the drain pan.
  • Dispose of used coolant responsibly; avoid skin contact and keep away from animals, as coolant is toxic.

Step 3: Optional – Flushing the System

  • Pour distilled water into the radiator to rinse out any residue.
  • Reinstall drain plug to avoid leaks.
  • Drain until only clear water comes out, then remove.

Step 4: Reinstall the Drain Plug and Hose

  • Ensure the drain plug is firmly tightened to prevent leaks.
  • Reattach any hoses that were disconnected.

Step 5: Pour in New Coolant

  • Slowly fill the radiator with fresh coolant – the RM85 takes just under 600 ml (about 1.2 US pints).
  • Fill up to the base of the radiator cap opening.

Step 6: Check for Leaks & Bleed Air

  • With the cap off, start the engine and let it run at idle for a few minutes. This cycles coolant and removes trapped air.
  • Top off the coolant if the level drops.
  • Reinstall the radiator cap, making sure it is sealed tightly.
  • After a brief ride, check coolant level again once cool and top up if needed.

Important Notes Specific to the 2007 Suzuki RM85

  • The RM85 uses 570 ml of coolant.
  • Check your radiator cap for a proper seal and the correct pressure range (95 – 125 kPa) to avoid overheating.
  • Inspect hoses for wear or cracking during the process; replace parts as needed, available from MotoSport.

Why Coolant Matters on the RM85

  • This lightweight race-spec 2-stroke motor generates considerable heat for its size.
  • Fresh coolant ensures optimal temperature regulation and protects the alloy head and gasket seals from corrosion.

Take pride in your maintenance—your RM85 rewards you with reliable, high-revving power every ride.

Related Shopping Categories

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Shop Radiator Hoses 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.