How to Change the Oil in a 2017 Honda CRF150R Big Wheel

Shop parts for a 2017 Honda CRF150R Big Wheel Dirt Bike.

This exclusive MotoSport.com guide covers everything you need to know to change the oil in your 2017 Honda CRF150R Big Wheel, including the tools required, step-by-step instructions, and key tips specific to this model to ensure optimal performance and longevity for your bike.

Tools & Supplies Needed

  • 10mm and 12mm socket or box-end wrench (for drain bolts)
  • Drain pan (to catch used oil)
  • Clean rags/shop towels
  • New engine oil (Honda GN4 10W-40 or equivalent, see below for quantity)
  • New oil filter (Honda Genuine or equivalent, recommended every other change)
  • New crush washers (for drain bolts, highly recommended)
  • Funnel (for pouring new oil)
  • Gloves (to protect your hands)
  • Torque wrench (optional but recommended for drain bolts)

Oil Specifications & Capacity for 2017 CRF150R Big Wheel

  • Engine Side Oil: 590cc (with filter change), 560cc (without filter change)
  • Clutch/Transmission Side Oil: 580cc
  • Oil Type: 10W-40, Pro Honda GN4 or equivalent

Before You Begin

  • Only work on a cool engine to avoid burns.
  • Work in a well-ventilated area.
  • Have all tools and supplies ready at hand.
  • Clean your work area and place the bike upright on a stand.

Step-by-Step Oil Change Instructions

  1. Warm up the engine briefly (1-2 minutes no throttle). This helps suspend impurities for a more complete drain, but the engine should not be hot.
  2. Turn off the bike, place it on a stable stand, and let it cool for a few minutes. Remove the seat and side panel if needed for better access.
  3. Locate the drain bolts (Note: CRF150R has separate engine and clutch/transmission oil compartments with individual drain bolts underneath each side). Place your drain pan underneath the first bolt.
  4. Remove the right-side (engine) drain bolt (10 or 12mm wrench). Allow the oil to fully drain. Remove the oil filler cap to speed up the process.
    Specific call-out: Don't mix up the drain bolts–the right side is for the engine (primary oil), the left for the clutch (transmission oil). Use a new crush washer each time you reinstall the bolt to avoid leaks.
    Let it drain completely. If changing the oil filter, continue to next step; otherwise, skip ahead.
  5. Replace the engine oil filter (recommended every time or every other oil change):
    - Remove the oil filter cover bolts.
    - Pull out the old filter with a pick or pliers.
    - Lubricate the new filter with fresh oil and insert it, rubber side in.
    - Clean the cover and mounting area.
    - Reinstall the cover and tighten bolts evenly.
  6. Install a new crush washer and reinstall the engine drain bolt. Hand-tighten first, then torque to specification (do not overtighten to avoid stripping the aluminum threads).
    Pro Tip: Replace the crush washer every change for leak prevention.
  7. Repeat the process for the left-side (clutch/transmission) drain bolt. Remove the bolt and drain old oil. Be careful as the clutch side oil can flow around parts inside, so allow extra time to drain. Replace with a new crush washer, reinstall bolt, and torque gently.
  8. Add new oil:
    - For engine side: Pour in 590cc (with filter) or 560cc (without filter) of 10W-40 oil.
    - For clutch/transmission side: Add 580cc of fresh oil. Use a funnel and pour slowly to avoid spills. Always support the funnel slightly above the opening to prevent airlocks and spills.
  9. Reinstall the oil filler caps. Make sure both engine and clutch side filler caps/dipsticks are securely tightened.
  10. Start the engine and let it idle for 2-3 minutes. Shut it down and let it sit for several minutes so the oil settles.
  11. Check oil levels on both sides using the dipsticks and add oil if necessary. Do not overfill.
  12. Dispose of the old oil and filter responsibly, following local hazardous waste guidelines.

2017 CRF150R-Specific Callouts & Tips

  • Two separate oil compartments: Both the engine and transmission sides require separate draining and filling. Never mix up the oil quantity or compartments, as this can cause severe engine damage.
  • Use new crush washers with every oil change to prevent leaks.
  • Do not overtighten drain bolts. The CRF150R—s aluminum cases are easy to strip if overtightened–15-20 Nm is sufficient.
  • Wipe around the dipsticks and filler caps before reinstallation to prevent dirt from entering the engine.
  • Oil filter orientation matters: Install the filter rubber side inward.
  • Warm up and check airflow after filling and idling the engine—improper idle or sludgy oil may signal incomplete draining or overfilling.

Final Inspection & Ride

  • Wipe all surfaces clean, inspect for leaks around drain bolts and filler caps.
  • Test ride the bike at low speed, then re-check oil levels after the engine cools.
  • Keep a record of your oil change with date, hour meter reading, and oil/filter brand used—this helps track maintenance and warranty.

Changing your oil regularly is essential for durability and performance. Always use top-quality fluids, the correct quantity, and new washers to protect your 2017 Honda CRF150R Big Wheel investment.

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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.