How to Change the Oil in a 2012 Yamaha TTR50: Step–by–Step Guide
Shop parts for a 2012 Yamaha TTR50 Dirt Bike.
If you own a 2012 Yamaha TTR50, performing regular oil changes is critical to keep your engine healthy and maximize your bike’s reliability and longevity. Below, you’ll find a comprehensive, proprietary guide — tailored specifically for MotoSport.com customers — to changing the engine oil on your Yamaha TTR50, with targeted tips unique to this model. This job is straightforward and can save you time and money while instilling confidence in performing basic dirt bike maintenance.
Tools and Supplies Needed
- 10W-40 motorcycle-specific engine oil (preferably Yamalube or another oil without friction modifiers)
- Drain pan for used oil collection
- Funnel (a narrow one works best for the filler)
- 17mm socket and ratchet (some models may use a 12mm for the drain bolt; always check your bike)
- Torque wrench (essential for re-tightening drain bolts to spec, recommended 15 ft-lbs for the TTR50)
- New crush washer for the drain plug (recommended but not mandatory if in good shape)
- Rags or shop towels for cleanup
- Gloves (optional, but keeps things clean)
- Stand (optional, but keeps your bike level for oil checks)
Preparation and Safety
- Warm up the engine for a couple of minutes so the oil thins out, making it easier to drain. Do not let the bike get excessively hot.
- Ensure the bike is on a stable and level surface. A stand is helpful, but not essential.
- Have all your tools and fresh oil on hand before you begin.
Step–by–Step Instructions
-
Locate the Drain Plug and Filler Cap
On the 2012 Yamaha TTR50, the drain bolt is located on the underside of the engine. The filler cap/dipstick is on the engine case. Refer to your owner’s manual, or look for the clearly visible bolt beneath the engine.
Tip: Removing the filler cap before draining helps oil flow out smoothly. -
Place the Drain Pan
Position your oil catch pan directly below the drain bolt so all used oil is captured. -
Remove the Drain Bolt
Use a 17mm socket (occasionally a 12mm on some units, so double-check your specific bolt size) and a ratchet to loosen and remove the drain plug and its crush washer.
Take care — the oil may be hot. Do not lose the drain bolt or washer.
Allow the oil to completely drain.
Owner’s Call-Out: The engine parts and oil may be hot, so exercise caution when removing the plug. Only remove the plug after the bike has cooled enough to be safe to touch.
Pro Tip: Tilting the bike slightly side to side (while steady and safe) can help evacuate all the old oil. -
Replace the Drain Bolt and Washer
Inspect the crush washer and replace it if it is deformed or excessively flattened. Screw the drain bolt back in by hand, then torque to 15 ft-lbs using a suitable torque wrench.
Do not over-tighten. This is a common mistake and can lead to case damage. -
Refill with Fresh Oil
Use a funnel and add exactly 0.8 to 1.06 quarts (800–1060ml) of 10W-40 motorcycle oil.
Model-Specific Call-Out: The TTR50 requires about 800ml of oil for a change; however, some oil stays inside the engine after draining, so starting with 750ml and topping off as needed after checking the dipstick is best practice.
Never overfill. Overfilling can cause excess pressure, leakage, or damage to your Yamaha's engine and air filter.
Critical Note: Use only motorcycle-specific oil (e.g., Yamalube). Do not use automotive oil, which usually contains friction modifiers that can cause clutch slippage in wet-clutch engines like the TTR50. -
Check the Oil Level
After adding fresh oil, thread the dipstick/filler cap back in, then remove it to check the oil level. The bike should be upright and level while checking.
If low, add oil in small increments (25-50ml at a time) and always recheck, as overfilling is worse than slightly underfilling.
If you see oil at or just below the “Full” line with the dipstick fully inserted (not screwed in), your level is correct.
Clean any oil residue from the filler area before reinstalling the dipstick/filler cap. -
Dispose of Used Oil Properly
Pour the old oil into a sealed container and take it to a recycling center or auto parts store that accepts used motor oil. Never dump oil on the ground or in the trash.
Yamaha TTR50 Oil Change Call-Outs
- Oil Capacity (2012 TTR50): Approx. 800ml (0.85 quart) is ideal, but always check your dipstick after filling. Overfilling is common if you assume a full quart is needed.
- Drain Bolt Torque Spec: 15 ft-lbs. Overtightening strips threads; always use a torque wrench if possible.
- Oil Change Interval: Yamaha recommends changing oil every 10 hours of use, or at least every few months, especially if the bike sits for long periods.
- Only use motorcycle oil (10W-40): The engine is shared with the wet clutch, and using car oil can cause serious clutch issues.
- Position the bike vertically for the most accurate oil level check. On the kickstand, readings will be incorrect.
Final Inspection
- Start the bike and let it idle for 1-2 minutes. Check the oil level again, as it may settle. Add more oil as needed, then re-check for leaks at the drain bolt.
Conclusion
Changing the oil on your 2012 Yamaha TTR50 is a simple but vital maintenance task. With basic hand tools and fresh 10W-40 motorcycle oil, you’ll protect your engine’s performance and longevity. For OEM parts, oil, filters, and more, MotoSport.com has you covered with everything you need and expert support.
If you found this guide helpful, find more model-specific dirt bike maintenance tips at MotoSport.com.
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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.