How to Change the Coolant in a 2013 Suzuki RM85
Shop parts for a 2013 Suzuki RM85 Dirt Bike.
Proper coolant maintenance is critical for your 2013 Suzuki RM85, ensuring peak performance, maximum engine life, and reliable temperature control on every ride. Here–s a proprietary MotoSport guide covering everything you need to know about changing the coolant in your RM85, with model-specific tips that will help you avoid common mistakes and keep your mini-motocrosser running strong.
What Makes the 2013 RM85 Different?
The Suzuki RM85 features a lightweight two-stroke engine with a high-revving characteristic and a compact cooling system. Its radiator and water pump assembly are designed for aggressive off-road use, but the cooling system capacity is modest, so regular fluid changes are vital to prevent overheating and corrosion. Unique hose routing and the position of the water pump can also impact how you access and flush the system, so attention to detail matters.
Tools & Supplies You’ll Need
- Phillips and flathead screwdrivers
- 8 mm socket or wrench
- Suitable drain pan
- Coolant (preferably Suzuki-approved premix, or high-quality dirt bike-specific coolant)
- Distilled water for flushing (never tap water)
- Shop rags
- Torque wrench (recommended for proper reassembly)
Step-by-Step Coolant Change for the 2013 Suzuki RM85
- Let the bike cool: Always work on a cold engine to avoid burns and false level readings.
- Remove the seat and shrouds: Use your screwdrivers to remove bodywork obstructing access to the radiator cap and hoses.
- Locate the radiator drain bolt: For the 2013 RM85, the coolant is typically drained by removing the bolt at the base of the water pump cover, which is located near the right side of the engine. Place a drain pan beneath the area.
Loosen the radiator cap to allow air in as the coolant drains fully – avoid breathing fumes and clean any spills promptly. - Flush the system (recommended): After most coolant drains out, slowly pour distilled water into the radiator to flush out residues. Let it drain completely. Repeat until the water runs clear. Do not use tap water, as it can introduce mineral deposits and impair cooling efficiency.
- Reinstall the drain bolt: Thread the bolt back into the water pump cover by hand, then torque to manufacturer specifications to avoid leaks or stripping (if you have a torque wrench, refer to your service manual for exact figures).
- Refill with new coolant: Pour the correct amount of fresh, high-quality coolant into the radiator until it reaches the base of the cap opening. Squeeze radiator hoses by hand to expel trapped air, topping up as needed.
- Bleed the system: Reinstall the radiator cap. Start the bike and let it idle for several minutes to circulate the coolant. Keep an eye on temperature and watch for leaks. Shut down the bike, let it cool, and check coolant level again, topping off if necessary.
Additional Tips for Suzuki RM85 Owners
- Check hoses and clamps for cracks or wear during service—replace if needed to prevent leaks.
- This model uses a pressurized cooling system; a failing radiator cap can cause boiling or loss of coolant, so inspect the cap seal closely.
- Always dispose of used coolant properly at an authorized recycling center to protect the environment.
- Replace coolant at least once a year, especially if you race or ride in hot conditions.
Summary
The RM85 is a high-output mini that runs best with regular, attentive care. Coolant maintenance is simple but essential. With the right steps and MotoSport-spec parts, you’ll keep your Suzuki performing its best, lap after lap.
Related Shopping Categories
Shop Radiators for a 2013 Suzuki RM85 Dirt Bike.
Shop Coolant for a 2013 Suzuki RM85 Dirt Bike.
Shop Temperature Sensors for a 2013 Suzuki RM85 Dirt Bike.
Shop Tools for a 2013 Suzuki RM85 Dirt Bike.
Shop Radiator Hoses for a 2013 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.