How to Change the Oil in Your 2017 Beta 125 RR-S: A MotoSport Guide

Ready to keep your 2017 Beta 125 RR-S performing at its best? The oil change procedure is specific to Beta's engineering, and taking the time to do this right means you'll protect your investment for every ride.

Shop parts for a 2017 Beta 125 RR-S Dirt Bike!

Tools & Parts Needed:

  • 8mm socket or T-handle (for oil filter cover bolts)
  • 19mm socket or wrench (for drain plug)
  • 4mm Allen (if you have a skid plate; hardware may vary)
  • Oil catch pan
  • Clean rag
  • New oil filter (recommended)
  • New crush washer for drain plug (recommended)
  • 690cc of JASO MA2-certified 4-stroke engine oil (check your owner's manual for exact spec and temperature range)

Step-by-Step Guide:

  • Warm up the engine – Let the bike idle for a few minutes so the oil flows out freely. Shut it off and secure it on a stand.
  • Remove the skid plate if you have one, using the required tool (often a 4mm Allen).
  • DRAIN THE OIL: Place the oil pan under the engine. Use a 19mm socket to remove the drain plug beneath the crankcase. Allow all oil to drain out. Inspect the magnet on the plug for metal debris.
  • Check the oil screen (if your model is equipped): Some Beta 125 RR-S bikes have a mesh screen behind the drain plug; slide it out, clean thoroughly, and reinstall.
  • REPLACE THE OIL FILTER: Locate the oil filter cover (right side of the engine), remove the three 8mm bolts, and pull the cover. Take out the used oil filter. Insert the new one – ensure it seats correctly. Replace the filter cover and tighten the bolts evenly.
  • Reinstall the drain plug with a new crush washer, and torque it to manufacturer spec.
  • Add fresh oil (690cc recommended for the 2017 125 RR-S for routine service). Fill through the oil filler cap (right side, above your boot). Use a funnel and pour steadily. Do not overfill.
  • Replace the dipstick and start the engine, letting it run for 30–60 seconds. Check for leaks around the plug and filter.
  • Re-check oil level: Remove the dipstick, wipe clean, re-insert (do not thread in), and check oil level. Top up if needed, but do not exceed the mark.
  • Reinstall the skid plate and clean any spilled oil from the bike and work area.

Special Notes for the 2017 Beta 125 RR-S:

  • The 2017 125 RR-S uses a shared oil system for engine and transmission, so frequent changes are critical to engine longevity and smooth shifting.
  • Always use JASO MA2-rated oil – the bike features a wet clutch and oil quality directly affects performance.
  • Beta's oil screens can trap debris—inspect them at every change.
  • Do not be alarmed if the oil looks dark after only a short interval—small displacement, high-revving motors like the 125 RR-S naturally degrade oil faster.
  • For hard off-road riders, consider oil changes at 10-12 hours of engine time for best results.

Keep your maintenance up and your Beta 125 RR-S will reward you with reliable performance on every trail. For replacement filters, gaskets, tools, and recommended oils, 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.