How to Change the Oil in a 2017 Beta 350 RR-S: Step-by-Step Guide

Shop parts for a 2017 Beta 350 RR-S Dirt Bike!

Keeping your 2017 Beta 350 RR-S in peak condition is essential for optimal performance & longevity. Routine oil changes are one of the most critical maintenance tasks you can perform. This proprietary MotoSport oil change guide is designed specifically for the unique double-oil-system found on the Beta 350 RR-S, covering best practices, model-specific notes, and important owner information for the 2017 model year.

Tools & Materials Needed

  • Replacement oil (refer to Beta's recommended type)
  • New oil filter (recommended for every other change)
  • Drain pan
  • Socket wrench set
  • Clean rags
  • Funnel
  • Torque wrench (to avoid over-tightening)
  • Gloves (recommended)

Oil System Overview for 2017 Beta 350 RR-S

  • The Beta 350 RR-S uses a split oil system–the engine side and the transmission/gearbox side each require their own oil, separate drain, and fill procedures.
  • There are no dipsticks or traditional measuring rods for oil level; proper fill is measured by quantity and visual confirmation in the oil sight glass or check bolt, depending on the side.

Step-by-Step Oil Change Process

Preparation

  • Run the engine for a few minutes to warm up the oil. Warm oil drains more completely and carries away more contaminants.
  • Shut off the engine and allow the bike to cool just enough so you can safely touch the engine area.
  • Secure the bike upright on a flat, stable surface.

Drain Engine Oil

  • Place a drain pan under the engine.
  • Using a socket wrench, remove the engine oil drain plug (refer to your manual for exact plug location).
  • Allow oil to drain completely. Inspect the old oil for metallic debris or signs of contamination.
  • If replacing the oil filter (recommended for every other change), remove the old filter at this time.

Replace & Tighten Drain Plug

  • After all oil has drained, reinstall the drain plug. Torque it to manufacturer spec: 20Nm for the 2017 Beta 350 RR-S to prevent over-tightening and damaging threads.

Install New Oil Filter (Optional but Recommended)

  • Install a new oil filter, ensuring it is properly seated and lightly oiled (if called for).

Refill with Oil: Correct Quantity Matters

  • The 2017 Beta 350 RR-S engine side takes approximately 650cc of oil after filter change, but always verify using the sight glass after running the engine briefly to circulate the oil. Overfilling can occur if you rely solely on sight glass before the oil has settled.
  • The gearbox/transmission side typically requires about 750ml per the manual.
  • Pour the correct oil quantity using a funnel. Replace the filler cap.

Check Oil Level

  • Start the engine and allow it to run for 2 minutes.
  • Shut the engine off and let oil settle for 1-2 minutes.
  • For the engine side, check the oil level via the sight glass. The oil should register at the middle of the window. Add or drain oil as necessary to hit the mark. For the transmission, use the level/check bolt–the oil should reach the lower edge of the check hole when the bike is upright.

Important Tips & Model-Specific Notes

  • The 2017 Beta 350 RR-S uses two separate oil circuits–never mix oil between engine and gearbox sides.
  • Always measure oil by volume, not just sight glass, due to variability after draining and running.
  • Failure to use the correct oil quantity can lead to premature wear or poor shifting performance.
  • Recommended oil change interval is every 10-15 hours of riding, or after any particularly hard or dirty rides.
  • Over-tightening the drain plug is a common owner error–always use a torque wrench set to 20Nm.
  • If you observe unusual oil level drops in the sight glass, investigate for leaks or excessive oil consumption–this is not typical for a healthy 350 RR-S.

Final Steps

  • Clean up any spills or drips.
  • Dispose of used oil & filters responsibly according to local regulations.
  • Mark your service interval and hours for future maintenance planning.

Caring for your 2017 Beta 350 RR-S with timely oil changes is essential for reliability and performance. When you need OEM filters, high-performance lubricants, or any parts for your Beta, MotoSport has you covered.

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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.