How to Change the Coolant in a 2009 Suzuki DRZ70: Step-by-Step Guide
Shop parts for a 2009 Suzuki DRZ70 Dirt Bike.
Keeping your 2009 Suzuki DRZ70 running cool and reliable is about more than just regular oil changes – coolant maintenance is just as important. Whether you trail ride for fun or give the DRZ70 to a young new motorcyclist, knowing how to change the coolant protects your engine from overheating and corrosion. Below, MotoSport.com brings you a step-by-step guide for a safe, thorough coolant change where you can shop for all your OEM and aftermarket parts.
What to Know Before You Begin
- The DRZ70 uses a sealed, simple cooling system that can be serviced with general hand tools.
- Never open the radiator cap when the engine is hot, as the system will be under pressure and could cause burns.
- MotoSport recommends preparing new pre-mixed coolant that is compatible with aluminum motorcycle radiators.
- Be sure to properly dispose of old coolant – it's very toxic to people and animals.
Tools & Supplies Needed
- Socket set and Phillips screwdriver
- Drain pan
- Pre-mixed motorcycle coolant (ethylene glycol-based, silicate-free for aluminum systems)
- Shop rags
- Funnel
- Safety gloves and goggles
Instructions
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Set Up the Bike
Make sure the DRZ70 is on a stable, level surface. Allow the engine to cool completely before starting any work. -
Remove Bodywork (if necessary)
Some DRZ70 models have radiator shrouds or covers. Remove any necessary plastics using a Phillips screwdriver or socket. -
Remove the Radiator Cap
Slowly twist the radiator cap to the first stop – let any remaining pressure bleed off, then remove it completely. -
Drain the Old Coolant
Place a drain pan under the water pump cover (bottom right side of the engine). Locate the coolant drain bolt (usually 8mm or 10mm) at the lowest point on the pump or left lower side of the radiator. Loosen and remove the drain bolt, allowing coolant to drain completely.
Tip: Open the radiator cap for quicker, more complete draining. -
Flush the Cooling System (Optional but Recommended)
Reinstall the drain bolt loosely, pour in clean distilled water, and run the engine for a minute (be sure not to let it overheat). Drain again. Repeat until the drained water is clear. -
Reinstall Drain Bolt/Secure Drain Plug
Ensure the sealing washer is in place and torque the drain bolt snugly. -
Add New Coolant
Using a funnel, slowly fill the radiator with fresh coolant up to the base of the filler neck. If your DRZ70 has a coolant reservoir, fill to the recommended line. -
Bleed Air from the System
- If your DRZ70 radiator has a bleeder screw, open it slightly as you fill, tightening when coolant leaks out with no air bubbles.
- Lean the bike left and right a few times to help free up any trapped air bubbles.
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Reinstall Radiator Cap/Reservoir Cap
Wipe away excess coolant, make sure the cap is clean, and tighten securely. -
Start and Heat Cycle the Engine
Start the engine and let it idle until it reaches operating temperature. Watch for any leaks. Shut off and allow the engine to cool fully. -
Re-Check Coolant Level
Open the radiator cap once the engine is completely cool. Top off coolant if needed. Check the reservoir and add as necessary.
Model-Specific Tips for the 2009 Suzuki DRZ70
- The DRZ70 does not have a thermostat or electric fan, so coolant flow is always open; never skip bleeding air from the system.
- Always ensure kids riding the DRZ70 understand to never tamper with the hot radiator cap or reservoir.
- The bike's compact radiator may require more frequent coolant checks if used in hot climates or in slow, high-rev riding conditions.
When to Change Coolant
- Every two years, or sooner if the coolant appears rusty, cloudy, or low
- Anytime you service major engine or radiator components
Changing coolant in your 2009 Suzuki DRZ70 is straightforward, adds years of life to your engine, and keeps every ride safe. For OEM parts, radiators, maintenance kits, or upgrades, shop parts for a 2009 Suzuki DRZ70 Dirt Bike.
Related Shopping Categories
Shop Radiators for a 2009 Suzuki DRZ70 Dirt Bike.
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Shop Temperature Sensors for a 2009 Suzuki DRZ70 Dirt Bike.
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Shop Radiator Hoses for a 2009 Suzuki DRZ70 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.