How to Change the Coolant in a 2015 Suzuki DR200S

Shop parts for a 2015 Suzuki DR200S Dirt Bike.

Maintaining optimal engine temperature is essential for the performance and longevity of your 2015 Suzuki DR200S. Changing your coolant at regular intervals not only helps prevent overheating and corrosion but also ensures consistent riding performancewhether you're hitting trails or commuting. Below is a complete, MotoSport-exclusive step-by-step guide for draining, flushing, and refilling the coolant in your DR200S.

Tools – Supplies You'll Need

  • Phillips and flathead screwdrivers
  • 8mm and 10mm sockets or wrenches
  • Drain pan (for used coolant)
  • Fresh, motorcycle-safe coolant
  • Distilled water (for flushing)
  • Funnel
  • Shop rags or paper towels
  • Gloves and eye protection

Before You Start

  • Ensure the bike is completely cool to avoid burns–never open the radiator cap on a hot engine.
  • Work in a well-ventilated area and have your drain pan ready for used coolant disposal.

Step 1: Access and Remove the Radiator Cap

On the DR200S, the radiator cap is typically secured with a small screw for safety. Use your screwdriver to remove this screw. Gently twist off the radiator cap to release any residual pressure. This model does not have a pressurized overflow system like some larger bikes, but take care regardless.

Step 2: Drain the Old Coolant

  • Locate the coolant drain bolt–on the DR200S, this is usually on the lower portion of the water pump cover (right side of the engine and marked by a small hex bolt).
  • Position your drain pan under the bolt, then remove it to let old coolant flow out. For the most efficient drainage, also remove the radiator cap or open the air bleed screw (if your DR200S is equipped with one). Removing the cap allows ambient air to help the coolant drain completely.

Step 3: Flush the Cooling System (Recommended)

  • If your DR200S has been neglected or you want extra peace of mind, flush the system with distilled water. Replace the drain bolt, pour distilled water into the radiator, and run the bike briefly (just a minute or two) with the cap off. Then drain again.
  • Repeat until drained fluid is clear. Never use tap water, which can introduce minerals and cause corrosion over time.

Step 4: Reinstall Drain Bolt

Clean the drain bolt threads and the area around the water pump cover. Reinstall the drain bolt, tightening it snugly–don't overtighten.

Step 5: Fill the System with New Coolant

  • Using a funnel, slowly fill the radiator neck with fresh, pre-mixed motorcycle coolant up to the base of the fill neck. If your DR200S is equipped with an overflow tank, fill it to the "full" line.
  • Gently rock the bike left and right, and squeeze the coolant hoses to encourage trapped air bubbles to escape.

Step 6: Bleed Air from the System

Some DR200S models have an air bleed screw near the top of the cylinder head or radiator. If yours does, open it a few turns while filling until coolant just starts to seep out, then retighten. If not, rocking and squeezing the hoses will help. After filling, run the engine for a few minutes with the cap off to help purge trapped air–watch for bubbling. Top off coolant as needed, then secure the radiator cap and reinstall the retaining screw.

Step 7: Check Levels & Inspect

  • With the engine off and cool, check the coolant level in the radiator once again and top up if needed. Ensure the overflow reservoir is at the proper mark as well.
  • Inspect all fittings for leaks, and check around the water pump cover and drain bolt for any signs of drips.

2015 Suzuki DR200S Owner Notes

  • The DR200S features a simple, single-cylinder air and oil-cooled engine, but it does utilize coolant around the cylinder head for temperature stability. Never substitute incompatible automotive coolants–use motorcycle-specific fluids for best protection of seals and metals.
  • Change coolant every two years, or as recommended based on your riding conditions.
  • If you ride in extreme mud or dirt, clean radiator fins with low-pressure water after every few rides to prevent clogging and potential overheating.

Final Thoughts

A fresh coolant change helps prevent overheating and internal corrosion, two common issues as dual-sport motorcycles age. If you're unsure about any step or need replacement gaskets, hoses, or caps, MotoSport has you covered.

Related Shopping Categories

Shop Radiators for a 2015 Suzuki DR200S Dirt Bike.

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Shop Temperature Sensors for a 2015 Suzuki DR200S Dirt Bike.

Shop Tools for a 2015 Suzuki DR200S Dirt Bike.

Shop Radiator Hoses for a 2015 Suzuki DR200S 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.