How to Change the Coolant in a 2012 Suzuki RM85
Shop parts for a 2012 Suzuki RM85 Dirt Bike.
Regular coolant replacement is crucial for the health of your 2012 Suzuki RM85, ensuring optimal cooling and engine longevity. This guide, tailored specifically for your RM85, details each step and highlights essential model-specific advice for a safe, efficient coolant swap.
What You'll Need
- Fresh coolant compatible with aluminum motorcycle engines (consult your RM85 owner's manual for specifications)
- Distilled water (for flushing and mixing if required)
- Drain pan
- Socket set and basic hand tools (8mm socket for drain bolt)
- Funnel
- Gloves and eye protection
Step-by-Step Coolant Change for the 2012 Suzuki RM85
- Allow the bike to cool completely before beginning–removing the radiator cap on a hot engine can cause burns due to pressurized steam and hot coolant.
- Remove the seat and side panels for easier access to the radiator and drain bolt as needed.
- Place a drain pan underneath the water pump (lower right side of engine).
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Locate and remove the coolant drain bolt at the bottom of the water pump using an 8mm socket.
Note: Loosen the radiator cap to help coolant drain quickly by breaking the vacuum seal. - Let the coolant drain completely into the pan.
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Flush the system (recommended): With the drain bolt still removed, gently pour distilled water through the radiator to remove any remaining old coolant or debris.
Repeat until clear water exits the drain. - Reinstall the drain bolt. Use a new sealing washer for optimal leak prevention and torque to factory specifications.
- Fill the radiator with new coolant (or pre-mixed coolant if not using concentrate). Fill to the base of the filler neck.
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Bleed trapped air: With the radiator cap still off, gently rock the bike side to side and lightly squeeze the radiator hoses. This helps air escape from the system.
Start the bike and let it run briefly (1–2 minutes) at idle, watching the coolant level. Top off if needed. - Reinstall the radiator cap securely.
- Warm up the bike fully (ride or idle until thoroughly hot), then shut off and allow to cool back down. After cooling, check coolant level and reservoir, topping off as necessary.
- Inspect for leaks at all connections and hoses before replacing the side panels and seat.
Key Considerations for the 2012 Suzuki RM85
- Cooling system capacity: The RM85 holds under 1 liter of coolant, so overfilling can cause overflow and underfilling can result in overheating.
- Only use distilled water for flushing and mixing, as tap water can introduce minerals and deposits harmful to radiator fins and the water pump.
- Avoid mixing coolant types. Always flush the system if changing from one brand or coolant type to another.
- Always dispose of old coolant responsibly–antifreeze is hazardous to humans and animals.
- Double-check torque on the drain bolt to avoid future leaks or thread damage.
Model-Specific Note
The 2012 RM85 is renowned for its high-revving two-stroke engine, which runs hotter than larger four-strokes in harsh conditions. Timely coolant changes are especially crucial for track and trail riders to prevent overheating or performance loss. Inspect the radiator for damage or debris after every ride, as the narrow radiator passages on this particular model can clog easily and restrict cooling efficiency.
Related Shopping Categories
Shop Radiators for a 2012 Suzuki RM85 Dirt Bike.
Shop Coolant for a 2012 Suzuki RM85 Dirt Bike.
Shop Temperature Sensors for a 2012 Suzuki RM85 Dirt Bike.
Shop Tools for a 2012 Suzuki RM85 Dirt Bike.
Shop Radiator Hoses for a 2012 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.
