How to Change the Oil in a 2013 Yamaha WR450F: Step-by-Step Guide
Shop parts for a 2013 Yamaha WR450F Dirt Bike.
Keeping your 2013 Yamaha WR450F's engine healthy and running strong means regular oil changes. This guide is written specifically for the 2013 WR450F and is proprietary to MotoSport.com. Follow it carefully, paying close attention to the specific call-outs for your bike.
Tools & Supplies Needed
- 5mm allen key or allen socket
- 12mm socket and ratchet (use a 1/4" drive if possible for tight spots)
- 8mm socket or 5/16" socket
- Oil drain pan
- Clean funnel
- Replacement oil filter
- New engine oil (consult your owner's manual, but typically 1.0 liter with filter for this engine)
- Shop rags or paper towels
- Replacement crush washers/gaskets (recommended to prevent leaks)
- Owner's service manual (use for reference on torque specs and diagrams)
OEM-Recommended Oil & Filter
- Oil: Yamaha recommends 10W-40 Yamalube (or a comparable high-quality 4-stroke motorcycle oil)
- Filter: Genuine Yamaha oil filter or trusted aftermarket alternative for WR450F 2013
Step-by-Step Instructions
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Warm Up the Engine
- Start your bike and let it idle for about 3–5 minutes. This thins the oil and helps it drain completely.
- Turn off the engine and allow to cool for a few minutes for safety.
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Remove the Skid Plate (Belly Pan)
- On the WR450F, you'll usually find three bolts holding the skid plate to the frame. Remove using the 8mm socket or allen as needed.
- Set the bolts aside so you don't lose them.
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Locate the Drain Bolts
- This engine design (2012–2015) uses two oil drain bolts beneath the engine. Either can be loosened first, as both must be removed to fully drain the oil.
- Position your drain pan beneath the bolts.
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Drain the Oil
- Using your 12mm socket and ratchet, loosen and remove the drain bolts. Watch for washers/gaskets and be sure not to lose them.
- Allow the oil to fully drain. Tilting the bike gently from side to side helps expel trapped oil.
- Inspect the oil for signs of metal or debris—excess indicates engine wear and should be investigated.
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Drain the Oil Filter Housing
- On the right side of the engine, below the filter cover, there's a 5mm allen drain bolt. Remove it to let the oil drain from the filter cavity.
- Tilt the bike slightly to help expel additional oil, then replace the filter housing drain bolt once fully drained.
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Remove and Replace the Oil Filter
- Remove the three 5mm allen bolts from the oil filter cover. Take the cover off to access the filter.
- Pull the old oil filter out, noting its orientation. Some aftermarket filters can install backwards—ensure the new filter matches the same direction as the old one (open end faces outward).
- Wipe down the seating surfaces, install the new filter, and reattach the cover with your 5mm allen bolts. Tighten securely, but avoid overtightening. Refer to your manual for exact torque specs.
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Install Drain Plugs
- Replace both engine drain bolts, ensuring the crush washers/gaskets are in place. Hand-tighten first, then finish with your socket, being careful not to overtighten (refer to owner's manual for torque specs).
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Add New Oil
- Make sure the bike is level. Remove the oil filler cap and insert your funnel.
- Add 1.0L of oil (when changing filter), but pour slowly and check frequently.
- Replace the oil filler cap, then start the bike and let it run for 60 seconds. Turn off and wait a minute for oil to settle.
- Check oil level using the dipstick: insert but don't screw in to check. The level should be between the “low” and “high” marks. Add oil if necessary.
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Reinstall Skid Plate
- Reattach the skid plate using the appropriate bolts/sockets.
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Clean Up
- Wipe up any spills, dispose of used oil and filter at a recycling center, and double check for leaks after your first ride.
Important Call-Outs for 2013 Yamaha WR450F Owners
- This generation WR450F has two drain bolts beneath the engine—both must be removed for full oil drainage (unique for this engine design).
- Always use new crush washers on the drain bolts to ensure proper sealing and prevent leaks.
- Oil quantity: 1.0 liter (with filter change); check level after running engine and top up if necessary.
- The dipstick on the WR450F is not threaded—just dip in and out to check level, do not screw it in for reading.
- On reassembly, pay close attention to orientation of the oil filter (never install backwards).
- Always consult your owner's manual for torque specs and specific tips for your particular year and market.
Questions or Maintenance Tips?
If you have further questions about oil changes or general maintenance for your 2013 Yamaha WR450F, MotoSport.com's tech team is always standing by to help. Ride safe and enjoy peak performance from your WR450F.
Related Shopping Categories
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Shop Oil Fillers and Drain Plugs for a 2013 Yamaha WR450F 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.