How to Change the Coolant in a 1995 Yamaha XT225

Shop parts for a 1995 Yamaha XT225 Dirt Bike.

Maintaining the cooling system on your 1995 Yamaha XT225 is crucial to ensuring long life and optimal performance. Changing the coolant helps prevent overheating, protects internal components from corrosion, and keeps your XT225 running smoothly – whether you are hitting the trails or racking up miles on the road. The XT225 is air- and liquid-cooled, making attention to coolant level and quality even more important. Here is a proprietary MotoSport step-by-step guide:

Tools & Supplies Needed

  • Socket set or wrench
  • Screwdriver
  • Catch pan for old coolant
  • Fresh coolant (consult your owner manual, but most modern pre-mixed or 50/50 motorcycle coolant works for the XT225 – avoid regular automotive coolants)
  • Distilled water (if flushing)
  • Shop rags
  • Safety gloves and glasses

Preparation & Safety

  • Work on a cool engine. Never open the radiator cap hot – hot fluids can cause severe burns.
  • Position the bike upright on a level surface, preferably on a stand.

Step 1: Remove the Panels

  • Remove any side panels or seats that block access to the radiator or coolant reservoir using appropriate tools.

Step 2: Drain the Old Coolant

  • Locate the radiator cap and the coolant drain bolt (typically found at the base of the water pump cover or lower radiator hose).
  • Place a catch pan under the drain area.
  • Remove the radiator cap slowly to relieve any pressure.
  • Unscrew the coolant drain bolt and allow all old coolant to drain completely.
  • Inspect and replace the drain bolt washer if necessary, as leaks are common if this is worn.

Step 3: Flush the System (Recommended)

  • If your coolant appears rusty, brown, or filled with debris, perform a system flush. Reinstall the drain bolt temporarily and fill the radiator with distilled water.
  • Run the engine for a few minutes (with the radiator cap installed) to circulate the water. Turn the engine off, allow it to cool, and drain the flush water. Repeat until the drained water runs clear.

Step 4: Refill with Coolant

  • With the drain bolt firmly secured, slowly pour fresh coolant into the radiator up to the filler neck.
  • Squeeze the hoses gently to help remove trapped air.
  • Top off the coolant reservoir up to the FULL line (if equipped).

Step 5: Burp the System

  • Start the engine and let it idle with the radiator cap off for a minute. Gently blip the throttle and rock the bike from side to side. This helps purge air from the system.
  • Add coolant if the level drops. When steady, reinstall the radiator cap.

Step 6: Final Checks

  • After a short test ride to allow the engine to reach operating temperature, let the bike cool completely. Recheck the radiator and reservoir levels, adding coolant as needed.
  • Reinstall any body panels or seats.
  • Wipe any spilled coolant from heat-sensitive surfaces.

XT225 Model Notes

  • The 1995 XT225 uses a compact, rugged liquid-cooling system, but the narrow radiators are susceptible to clogging. Regular coolant changes are particularly important.
  • Monitor the condition of hoses and clamps – age can make rubber brittle or leak-prone.
  • OEM recommendations discourage using silicate-containing coolants, which can damage seals over time.
  • If your XT225 overheats persistently or shows milky oil (a sign of coolant in oil), inspect for possible internal sealing failures.

Staying on top of coolant maintenance ensures your XT225 stays reliable wherever you ride. If you need gaskets, hoses, or fresh coolant, MotoSport stocks OEM and performance parts for the Yamaha XT225. Proper care keeps you riding with confidence, mile after mile.

Related Shopping Categories

Shop Radiators for a 1995 Yamaha XT225 Dirt Bike.

Shop Coolant for a 1995 Yamaha XT225 Dirt Bike.

Shop Temperature Sensors for a 1995 Yamaha XT225 Dirt Bike.

Shop Tools for a 1995 Yamaha XT225 Dirt Bike.

Shop Radiator Hoses for a 1995 Yamaha XT225 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.