How to Change the Oil in a 1987 Yamaha PW80 — A MotoSport.com Guide
Shop parts for a 1987 Yamaha PW80 Dirt Bike.
Keeping your Yamaha PW80 in top running condition means performing regular maintenance tasks — oil changes being one of the most important. This detailed guide walks you through every step, the tools required, safety tips, and notes unique to the 1987 PW80. Follow these instructions for worry-free riding and engine longevity.
Tools & Materials Needed
- 17mm socket and ratchet
- Oil drain pan (any suitable container to catch used oil)
- Clean rag for wiping hands and cleaning up spills
- Measuring container (for fresh oil, optional if you have pre-measured bottles)
- Funnel (for adding new oil)
- Fresh oil: Use a non-synthetic 10W-30 or 10W-40 4-stroke motorcycle oil with no extra friction modifiers or “Energy Conserving” ratings
- Gloves for personal protection (recommended)
Step-by-Step Oil Change Instructions for Yamaha PW80
-
Warm Up the Engine
- Start your PW80 and allow it to idle for several minutes. This helps the oil flow more easily and ensures contaminants are suspended for removal.
-
Prepare the Work Area
- Park the bike on a level surface and switch it off. For extra safety, use the bike’s kickstand or a stand to keep it upright.
- Allow a few moments for the exhaust and engine to cool slightly to avoid burns, but not so long that the oil fully cools and thickens.
-
Locate the Oil Drain Plug
- The oil drain plug is directly beneath the engine, just under the engine case and bracket for the foot pegs. Identify this 17mm bolt before proceeding.
-
Drain the Oil
- Position your oil drain pan under the plug to prevent spills.
- Use your 17mm socket and ratchet to carefully loosen and remove the drain bolt. Be cautious as the oil will begin to drain immediately — ensure you don’t drop the drain bolt into the used oil.
- While the oil drains, remove the oil filler cap to allow air to enter and help the oil drain more thoroughly.
-
Inspect and Clean the Drain Plug
- Wipe the plug thoroughly with a rag and inspect the condition of the sealing washer or O-ring. Replace if damaged for a reliable seal.
-
Reinstall Drain Plug
- Once the oil stops dripping, reinstall the clean drain plug. Tighten it securely, but avoid over-torquing which could strip the threads.
-
Add New Oil
- Using a funnel, pour fresh oil into the filler opening. The correct quantity for the PW80 is about 0.75 liters (750ml) of 10W-30 or 10W-40 4-stroke motorcycle oil that meets Yamaha’s recommendations.
- Do not use 'Energy Conserving' automotive oils or those with “CD” (or higher) diesel ratings — these can cause clutch slippage (the transmission oil also lubricates the clutch).
-
Check the Oil Level
- Insert the dipstick (or check the oil level window, depending on your model) without screwing it in and verify the oil level reaches the correct mark.
-
Start the Engine and Check for Leaks
- Run the engine for a few minutes and inspect the drain plug area for leaks. Shut the engine off and recheck oil level, topping off if necessary.
-
Dispose of Used Oil Responsibly
- Pour the used oil into a sealed container and take it to your local recycling center or auto parts store for proper disposal. Never pour oil down the drain or on the ground.
Special Call-Outs for the 1987 Yamaha PW80
- Oil Type & Additives: Only use oils specified for wet clutch systems in small-displacement Yamaha engines. Avoid “Energy Conserving” and high-detergent automotive or diesel-specific oils. Mixing in chemical additives is not recommended, as they may cause clutch slippage.
- Drain Bolt Placement: The 17mm drain bolt is located under the motor, just forward of the footpeg bracket.
- Draining Tip: Be careful when removing the drain plug; catch it before it drops into the oil pan, as heat and oil can make it slippery.
- Oil Capacity: For the 1987 PW80, use approximately 0.75 liters (750ml) of fresh oil.
- Leak Check: After refilling and brief engine running, always inspect the drain plug and filler cap area for leaks before riding.
Additional Maintenance Tips
- Frequency: Oil changes are recommended after the initial break-in (first 10 hours) and subsequently at intervals in your service manual, generally every 20–30 hours of riding or annually, whichever comes first.
- Air Filter: Changing oil is a great time to inspect or clean the air filter, as a dirty filter accelerates engine wear and oil contamination.
By following these steps and maintaining attention to oil type and level, your 1987 Yamaha PW80 will deliver many more miles of reliable fun. As always, consult your owner’s manual for detailed diagrams and torque specs, and visit MotoSport.com for replacement parts, oils, and more maintenance resources. Happy riding.
Related Shopping Categories
Shop Motor Oil for a 1987 Yamaha PW80 Dirt Bike.
Shop Oil Filters for a 1987 Yamaha PW80 Dirt Bike.
Shop Oil Drain Pans for a 1987 Yamaha PW80 Dirt Bike.
Shop Tools for a 1987 Yamaha PW80 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 1987 Yamaha PW80 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.