How to Change the Coolant in a 2019 Suzuki DRZ50: Step-by-Step MotoSport Guide
Shop parts for a 2019 Suzuki DRZ50 Dirt Bike.
The 2019 Suzuki DRZ50 is a reliable entry-level dirt bike, and routine coolant changes are key to long-term engine health. Unlike larger dual-sport DR-Z models, the DRZ50 has a straightforward air-cooled design with a simple cooling system–making maintenance accessible for new riders and parents alike. Follow this proprietary MotoSport guide to ensure your little machine stays ready for every ride.
What You Need
- Fresh coolant (suitable for motorcycles and compatible with aluminum engines)
- Distilled water (if flushing the system)
- Socket set (8mm or 10mm for drain bolt, verify with your bike)
- Phillips and flathead screwdriver
- Funnel
- Drain pan
- Rags or shop towels
- Protective gloves
Changing the Coolant: Step-by-Step
- Ensure the engine is completely cool. Hot coolant can cause severe burns.
- Secure the bike upright using a stand on stable ground.
- Remove plastic covers or shrouds if needed to access the radiator and filler cap.
- Place a drain pan under the water pump area at the bottom of the engine.
- Remove the radiator cap slowly to release pressure and allow for faster draining.
- Locate and loosen the coolant drain bolt on the water pump (usually an 8mm or 10mm hex bolt at the lowest point on the side cover).
- Allow all coolant to drain. Tilt the bike slightly if needed. Use a rag to catch drips and prevent spills on painted surfaces.
- Optional: Flush the system with distilled water. Replace drain bolt and fill radiator with distilled water, run engine briefly, then let cool and drain completely again.
- Inspect the drain bolt gasket (replace if damaged) and reinstall the drain bolt. Tighten to factory specs–avoid overtightening.
- Refill radiator with fresh coolant using a funnel. Fill to the bottom of the filler neck.
- Gently rock the bike side to side to help remove any air pockets from the cooling system.
- Reinstall the radiator cap securely.
- Run the engine for several minutes in a well-ventilated area. Watch the coolant level and check for leaks around the drain bolt and hoses.
- Let the engine cool and recheck coolant level. Top off if necessary.
- Replace any removed covers and wipe down the bike.
Important Notes for DRZ50 Owners
- The DRZ50 cooling system is intentionally simple and compact. Using the correct motorcycle coolant–never automotive-only products–is crucial for proper wet-clutch and gasket compatibility.
- The DRZ50 often operates at lower speeds with young riders, so monitor for evidence of overheating, leaks, or coolant loss after changing the fluid.
- Disposal of old coolant should always be done responsibly at an approved recycling location due to its toxicity.
- A healthy DRZ50 cooling system prevents premature engine wear–always inspect hoses, seals, and the radiator for any signs of age or cracks during each coolant change interval.
When to Change Coolant
For the 2019 DRZ50, Suzuki recommends changing the coolant every two years, or sooner if the fluid is contaminated, discolored, or low. Frequent dirt and mud riding may increase required maintenance intervals. Routine checks keep your bike’s performance and reliability at their best, letting you focus on the fun.
Related Shopping Categories
Shop Radiators for a 2019 Suzuki DRZ50 Dirt Bike.
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Shop Radiator Hoses for a 2019 Suzuki DRZ50 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.