How to change the oil in a 2015 Yamaha PW50 Dirt Bike

How to Change the Oil in a 2015 Yamaha PW50: A Step–by–Step Guide

Shop parts for a 2015 Yamaha PW50 Dirt Bike.

MotoSport.com is committed to helping you keep your dirt bike in top shape. The 2015 Yamaha PW50 uses a separate transmission oil and a two-stroke oil injection system. Regular oil changes will ensure optimal performance and prevent mechanical issues. Below you'll find the tools you need, a comprehensive step-by-step guide, and crucial model-specific tips for the PW50.

Tools and Materials Needed

• 12mm socket wrench (for drain plug)
• Drain pan
• New transmission oil (Yamaha specifies SAE 10W-30 or equivalent, but always verify with your owner's manual)
• Measuring cup for proper oil volume
• Funnel
• Crush washer (replace with each change)
• Rags or paper towels (for cleanup)
• Rubber gloves (optional but recommended)

Transmission Oil Change Procedure

• Warm Up the Engine
  Run the bike for a few minutes to warm up the transmission oil. This helps the oil drain more thoroughly. Do not run the bike indoors or in an unventilated area.
• Stabilize the Bike
  Place the bike on a level surface using a stand to ensure it stays upright.
• Locate the Transmission Oil Drain Plug
  The drain plug is on the left side of the engine case. Place the drain pan beneath it.
• Remove the Drain Plug
  Use the 12mm socket to carefully remove the drain plug. Allow the oil to fully drain into your pan. This should take just a few minutes.
  Tip: While the oil is draining, unscrew the transmission oil fill cap (top of the left engine cover) to allow air in and speed up the process.
  Model Specific Call-Out: Replace the crush washer on the drain plug every time you change the oil for the 2015 Yamaha PW50. This helps prevent leaks.
  Note: The drain plug is aluminum and may strip easily. Avoid overtightening when reinstalling.
• Inspect and Clean the Plug
  Wipe the drain plug clean. Inspect it for metal particles, which could indicate excessive wear. Replace the crush washer.
• Reinstall the Drain Plug
  Tighten the drain plug to factory spec. If you don't have a torque wrench, snug it securely but do not over-tighten.
• Add New Transmission Oil
  Using a funnel, pour the specified amount of new oil into the fill port. For the Yamaha PW50, the transmission takes approximately 120 mL (about 4.1 oz) of oil.
  MotoSport Tip: Use a measuring cup to be precise. Overfilling or underfilling can lead to transmission problems.
• Replace the Fill Cap
  Secure the fill cap. Wipe off any spilled oil.
• Check for Leaks
  Start the engine and let it run for several minutes. Inspect the drain plug and fill cap area for leaks.
• Dispose of Old Oil Properly
  Take the used oil to your local recycling center or auto parts store for proper disposal.

Two-Stroke Injector Oil: What You Need to Know

• PW50's engine is oil-injected, meaning you shouldn't mix oil and gas manually. Instead, keep the oil reservoir behind the front number plate topped off using Yamaha 2-stroke injector oil, such as Yamalube 2S.
• Check the reservoir often and never let it run dry. If the oil runs out, you risk severe engine damage.
  Model-Specific Call-Out: PW50s have a low oil light; if it comes on, fill the oil reservoir immediately.
  Avoid using oils not specifically labeled for 2-stroke injectors, as they can gum up the system or cause deposits.

2015 Yamaha PW50 Oil Change Intervals

• For new bikes, change the transmission oil after the first month and again after six months.
• Thereafter, an annual oil change is sufficient for most riders, unless the bike is ridden heavily or in extreme conditions.

Key Tips for PW50 Owners

• Check your oil levels regularly. Both the transmission and 2-stroke injection systems are vital to engine health.
• Keep a new crush washer and the right oil on hand. This makes scheduled maintenance a breeze and helps prevent leaks.
• Avoid overtightening bolts. The small size of the PW50 means its fasteners can strip easier than those on bigger bikes.
• Dispose of oil safely. Never pour old oil on the ground or into regular trash.

Summary

The 2015 Yamaha PW50 is renowned for its simplicity and reliability, especially when maintained correctly. Regular transmission oil changes and keeping the two-stroke injector reservoir full will keep your PW50 running strong for years. Following the steps above ensures that your dirt bike is not only ready for the next ride but protected for the long haul.

Written exclusively for MotoSport.com

Related Shopping Categories

Shop Motor Oil for a 2015 Yamaha PW50 Dirt Bike.

Shop Oil Filters for a 2015 Yamaha PW50 Dirt Bike.

Shop Oil Drain Pans for a 2015 Yamaha PW50 Dirt Bike.

Shop Tools for a 2015 Yamaha PW50 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2015 Yamaha PW50 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.