How to Change the Coolant in a 2022 Suzuki RM85
Shop parts for a 2022 Suzuki RM85 Dirt Bike.
Performing regular coolant changes ensures your 2022 Suzuki RM85 runs cool and performs its best on the track or trail. The RM85 features a straightforward liquid-cooling system, but proper steps – and a few model-specific notes – help maximize longevity and prevent damage. Follow this MotoSport.com exclusive guide for a precise and safe coolant replacement.
What You Need
- Replacement coolant (suitable for aluminum components)
- Drain pan
- 8mm or 10mm socket/wrench (verify size for drain plug)
- Screwdriver (if removing radiator shrouds or hoses)
- Rags
- Funnel
- Block or stand to stabilize the bike
- Optional: compressed air for thorough flush
Prep & Safety
- Allow the engine to cool completely—opening the radiator cap when hot may cause serious burns from scalding steam or fluid.
- Stabilize the bike on a level stand or block to avoid spills and ensure access to the drain bolt and radiator cap.
Step-by-Step Coolant Change
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Access the Radiator Cap
Remove any plastic guards or shrouds if they obstruct access. Open the radiator cap to allow the system to vent as it drains. Never force the cap off if the system is under pressure. -
Locate and Remove the Drain Plug
Position the drain pan under the drain bolt (usually found at the lower water pump housing or near the bottom of the engine). Loosen and remove the drain bolt. For the RM85, you may also disconnect the lower radiator hose to maximize draining. -
Drain Old Coolant Completely
Allow coolant to fully drain. To improve flushing, gently tip the bike side to side (while stabilized) or blow low-pressure compressed air through the system (if changing coolant types), but this is optional for routine changes. -
Replace Drain Bolt and Hoses
Once dry, reinstall and tighten the drain bolt to the manufacturer’s torque setting. Reconnect any hoses that were removed. Take care not to cross-thread bolts or overtighten. -
Add New Coolant
With the funnel, slowly fill the radiator with fresh coolant up to the bottom of the filler neck. For the 2022 RM85, the cooling system capacity is 570 ml (1.2 US qt/1.0 Imp qt). -
Bleed Air from the System
Gently rock the bike side to side to release trapped air. Some riders loosen the bleed bolt (if equipped) on the upper radiator for additional bleeding. Top off the coolant level as necessary. -
Seal & Test
Tighten the radiator cap firmly. Start the engine and let it run for several minutes. Inspect for leaks and re-check the coolant level; top off if needed after the system has cycled.
Model-Specific Notes for the 2022 RM85
- Use coolant rated for aluminum systems to prevent corrosion.
- Radiator cap requires 95 – 125 kPa (13.5 – 17.8 psi) release pressure. Check the cap for seal condition – a worn or damaged cap can cause overheating.
- Do not mix different coolant types. If switching brands or types, thoroughly flush the system before refilling to prevent chemical reactions or deposits.
- Inspect for common RM85 issues, such as pinched radiator hoses or damage from tip-overs, before reinstalling components.
Aftercare
- Check the coolant level after your first ride.
- Periodically inspect hoses and for signs of leaks, especially after hard riding or crashes.
- Replace coolant every 2 years for optimal protection, or sooner if you ride in muddy/wet conditions.
Keeping your 2022 Suzuki RM85’s cooling system fresh is simple with the right approach and genuine care. For OEM and performance parts, rely on MotoSport.com to keep your ride race-ready at all times.
Related Shopping Categories
Shop Radiators for a 2022 Suzuki RM85 Dirt Bike.
Shop Coolant for a 2022 Suzuki RM85 Dirt Bike.
Shop Temperature Sensors for a 2022 Suzuki RM85 Dirt Bike.
Shop Tools for a 2022 Suzuki RM85 Dirt Bike.
Shop Radiator Hoses for a 2022 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.