How to Change the Oil in a 2016 Beta 390 RR: MotoSport's Exclusive Guide
Shop parts for a 2016 Beta 390 RR Dirt Bike!
The 2016 Beta 390 RR is a premium four-stroke dirt bike built for performance and reliability. Regular oil changes are crucial to maintaining smooth operation, longevity, and maximum power output. This proprietary MotoSport guide will walk you step-by-step through the process, highlighting key tips unique to your Beta 390 RR.
What Makes the Beta 390 RR Special?
- Separate Oils for Engine – Transmission: The 2016 Beta uses two distinct oil circuits–one for the engine and one for the transmission. Each system requires a precise volume of oil to function correctly.
- Sight Glass Calibration: The oil sight glass on the Beta is checked while the engine is running–not when shut off, unlike many other models. This is a specialized Beta spec you'll need to follow for accuracy.
Tools & Supplies
- Drain pan
- 8mm and 13mm sockets
- Torque wrench
- Two new drain bolt o-rings
- New oil filter & cover o-ring
- 750 ml of recommended 10W-50 oil for both engine & transmission
- Rags and safety gloves
Step-by-Step Oil Change Procedure
- Warm the Engine
Always perform the oil change when the engine is hot–this ensures contaminants are in suspension and oil flows freely. - Stabilize the Bike
Position your Beta 390 RR upright on a level surface. Remove the skid plate to access drain bolts. - Drain Engine Oil
Place your drain pan beneath the engine. Remove both 8mm oil filter cover bolts. Take off the oil filter cover and carefully remove the old filter and cover o-ring–leave the filter chamber uncovered briefly to help with full oil drainage.
Next, use a 13mm socket to remove the engine oil drain bolt. Let all the oil flow out. - Drain Transmission Oil
Locate and remove the transmission oil drain bolt. Let the transmission oil completely drain into your pan. - Replace Components
Install a new oil filter, ensuring the open end faces the engine, and fit a new cover o-ring. Reinstall the cover and bolts, tightening to 10 Nm torque.
Fit new o-rings on both drain bolts. Install the bolts: engine drain bolt to 15 Nm, transmission to 20 Nm. - Add New Oil
Pour 750 ml of fresh 10W-50 oil into the engine side and 750 ml into the transmission side (use a funnel to avoid spills).
Replace the filler cap o-rings if worn. Tighten caps securely. - Accurate Oil Level Check
Start the engine and let it idle for 2 minutes. Check the oil sight window: engine oil should be at the middle of the glass while running, not when off.
For transmission: turn off the bike and check through the transmission oil check bolt–oil should be at the bottom of the threads. Top up each with small amounts if required.
Important Notes for Your Beta 390 RR
- Oil Consumption – Sight Glass Fluctuation: After riding, you may notice the oil level in the sight glass drops from the fill level. This is normal for the Beta RR models–it can settle lower or fluctuate after operation. Drain quantities may be less than filled due to residue in engine galleries.
- Torque Values Matter: Use a torque wrench and follow the specified values to avoid stripping bolts or damaging threads–Beta's alloy cases are notably softer than those on many Japanese bikes.
- Kit Recommendation: MotoSport stocks complete oil change kits engineered for Beta. Use OEM-spec filters, o-rings, and recommended oil for the best performance.
- Check Oil Often: Off-road riding can stress engine lubrication–inspect your oil level frequently and change oil every recommended interval for top reliability.
Ready to Ride
By carefully following these MotoSport-recommended steps, you'll keep your 2016 Beta 390 RR running at peak power and reliability. If you need genuine Beta parts or recommended lubricants, visit MotoSport's dedicated section.
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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.