How to Change the Oil in a 2019 Honda CRF450R: Step-by-Step Guide
Shop parts for a 2019 Honda CRF450R Dirt Bike.
Keeping your 2019 Honda CRF450R running strong requires regular oil changes. Following the recommended intervals—every 6 races or 15 hours of use—not only extends engine life, but it also ensures optimal performance. This proprietary MotoSport.com guide covers all the details, including the tools you need, precise instructions, and specific call-outs unique to the 2019 CRF450R.
Tools and Supplies Needed
- 8mm and 10mm sockets
- Ratchet
- 10mm hex socket or wrench (drain bolt)
- Screwdriver (if needed for engine guard)
- Honda oil filter (specific for 2019 CRF450R)
- Honda 20W-50 engine oil (approx. 1.2 quarts)
- New crush washer (for drain bolt)
- New O-ring (for oil filter cover)
- Drain pan
- Rags or shop towels
- Measuring cup (to check oil volume)
- Torque wrench (optional for precise tightening)
Step-By-Step Instructions
-
Warm Up the Engine
Start your CRF450R and let it idle for 2 to 3 minutes. This ensures the oil becomes less viscous, allowing nearly all the old oil to drain. Avoid revving the engine with cold oil. -
Remove Protection and Access the Filter
Using a 10mm socket, remove the left side engine guard to access the oil filter cover and drain bolt. Set aside the bolts and the guard.
Call-Out: The 2019 CRF450R features a large under-engine skid plate; ensure it's removed for complete access to components. -
Prepare the Bike for Draining
Place your drain pan under the crankcase drain bolt. Remove the oil filler cap on top of the engine so the system can vent and oil flows freely. -
Drain the Old Oil
Locate the drain bolt at the lower rear of the crankcase. Use a 10mm socket (or hex, as fitted) to remove the drain bolt and crush washer.
Caution: The drain bolt on the 2019 CRF450R is extra large and can make a mess if not careful. Angle your drain pan and be ready for a sudden gush of hot oil. -
Remove and Replace the Oil Filter
Unscrew the two bolts securing the oil filter cover using an 8mm socket. Remove the cover and pull out the old oil filter. Be sure the old O-ring is removed, not stuck to the cover.
Clean the filter recess; insert a new oil filter, lubricate a new O-ring, and fit it in place. -
Install the Drain Bolt
Inspect and replace the crush washer if it shows wear or flattening. Install the drain bolt and torque to spec (consult your manual or torque to “snug,” typical range is 12-18 ft-lb). -
Reinstall the Oil Filter Cover
Position the cover and install the bolts. Use a torque wrench if possible and tighten to 9 ft-lb (12 Nm). -
Reattach Engine Guard or Skid Plate
Replace the left engine guard and secure with the bolts you set aside. -
Add Fresh Oil
Pour in Honda 20W-50 engine oil. The correct initial fill for the 2019 CRF450R is about 1.2 quarts (1.1 liters). Add oil slowly via the filler hole. -
Check Oil Level
With the bike level and upright, check the oil level through the sight glass located just below the oil filter cover.
If needed, add small amounts until it reaches the full mark. Be careful not to overfill. -
Run and Recheck
Start the engine and idle for 2 minutes. Shut it off, let it rest for a few minutes, then check the oil again and top off if necessary.
2019 Honda CRF450R Specific Call-Outs
- Large Oil Drain Plug: The 2019 model features a sizable oil drain plug that can cause splashing—be prepared when loosening and watch your hands and the work area for spills.
- Engine Guard Skid Plate: You must remove the protective plate for full access to the filter and drain bolt.
- Oil Capacity: Approximate capacity after a change is 1.2 quarts. Use the sight glass, not just the measured amount, for accuracy.
- Tightening Torque: The filter cover bolts should be torqued to 9 ft-lb to avoid overtightening and thread damage.
- Change Interval: Oil and filter should be changed every 15 hours of riding or every 6 races, whichever comes first.
Tips for a Clean, Hassle-Free Oil Change
- Wear gloves for protection from hot oil and to keep hands clean.
- Dispose of old oil and the filter responsibly at a recycling center.
- Always use fresh crush washers and O-rings to ensure no-leak reassembly.
- Keep a shop towel under the drain area in case of spills.
With regular oil changes using these steps, you’ll maximize reliability and speed from your 2019 CRF450R, round after round.
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Shop Oil Fillers and Drain Plugs for a 2019 Honda CRF450R 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.