How to Change the Oil in a 2019 Beta 350 RR-S

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The 2019 Beta 350 RR-S is a sophisticated dual-sport with a reliable four-stroke engine, but keeping it at peak performance means regular oil changes – about every 15-20 engine hours or after hard use. This guide covers oil change essentials, warnings unique to this model, and insider tips that every Beta owner needs.

What You'll Need

  • Oil filter (specific for 2019 Beta 350 RR-S)
  • Replacement engine oil (high-quality 4T synthetic recommended)
  • Replacement transmission oil (gear oil 75W or specified grade by Beta)
  • Crush washers for drain bolts
  • Drain pan
  • Socket set – drain bolt (engine and transmission)
  • Torque wrench
  • Rags & gloves
  • Funnel or oil fill bottle

Step-by-Step Instructions

  1. Warm up the bike: Let the engine idle for 2-3 minutes. This thins the oil, allowing it to drain more completely.
  2. Stabilize the motorcycle: Place your Beta 350 RR-S on a level stand. Ensure it won't tip during the process.
  3. Remove skid plate (if fitted): This makes the job cleaner and provides easy access to drain bolts.
  4. Drain the engine oil:
    • Locate the primary engine drain bolt beneath the motor on the right side.
    • Place the drain pan underneath and remove the drain bolt carefully.
    • Allow all oil to drain, then inspect and replace the crush washer.
    • Reinstall and torque the bolt (be careful not to overtighten – torque is low, check your manual for precise value).
  5. Drain the transmission oil:
    • The transmission has a separate drain bolt, typically near the rear of the engine case.
    • Remove the bolt, let oil drain, and replace the crush washer.
    • Reinstall and torque the drain bolt.
  6. Replace the oil filter:
    • Unscrew the oil filter cover (located on the right side of the crankcase).
    • Remove the old filter. Clean the area, then install the new filter (lubricate the O-ring with a dab of new oil).
    • Reinstall the cover and torque to spec.
  7. Refill with oil:
    • Engine oil: Add 750cc (ml) of oil. Do not rely on the sight glass or manual check plug – these can be misleading for this generation of Beta engines. Just trust the measured amount.
    • Transmission oil: Add 750cc (ml) of oil. Ignore the check plug; following the measured volume is critical to avoid underfilling, which is a known issue on these bikes if the OEM check method is used.
  8. Start the bike:
    • Let it idle for about 2 minutes, then shut off.
    • Check for any oil leaks from the drain bolts or oil filter cover.
  9. Final inspection:
    • Reinstall the skid plate if removed.
    • Dispose of used oil and filter properly.

Model-Specific Tips for the 2019 Beta 350 RR-S

  • Separate engine & transmission oils: This model requires you to change two separate oil circuits. Always use two separate containers to avoid confusion.
  • Warning: Do NOT use the check plug for oil level on either the engine or transmission. The design will give a falsely low reading and can lead to catastrophic underfilling. Always measure exact volume – 750cc for each side – for the 2019 model.
  • The oil sight window may not give an accurate reading until after running the engine for a couple of minutes, due to oil distribution with a new filter and air in the system. This is expected for this year and model.
  • Crush washers are inexpensive insurance – replace with every oil change to prevent leaks.
  • Check the owner's manual or under the seat for torque specifications and confirm the oil grades suitable for your local climate.

Why Beta's Oil Change Process Matters

Using the correct fill volumes – and not relying on misleading check procedures – ensures a long life for your engine and transmission. Underfilling is a well-known risk with Beta's plug check system on these models, so go by the recommended volume every time. Factory Racing, warranty departments, and experienced Beta riders all stress this advice to prevent damage and keep warranty coverage valid.

Keep Your 350 RR-S Running Strong

Routine oil changes, using the correct method and supplies, are critical to the longevity and performance of your 2019 Beta 350 RR-S. Sticking to measured oil quantities and replacing both engine and transmission oil at regular intervals will keep your bike ready for the trail ahead.

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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.