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Gear oil change

NOTE: This is a cheat sheet, not the full service manual procedure. The owners manual lists Motor oil as SAE 75w-90 gear oil; Stark’s 07.019.06 Change gear oil technical manual says to use synthetic 75W-90 gear oil.

Procedure notes

  1. Start with the bike cool, off, and disconnected from the charger.
  2. Remove the skid plate.
  3. Put a drain container directly under the gear oil drain plug.
  4. Loosen the gear oil drain plug.
  5. Loosen the right motor cover metal cap.
  6. Let the oil drain for a bit, then lean the bike slightly to the right. Stark specifically calls out the lean to get more of the used oil out.
  7. Pour a little clean oil through the metal cap opening to flush old oil through the case.
  8. Install a new washer on the drain plug and tighten the drain plug to 15 Nm.
  9. Remove the oil level bolt.
  10. Level the bike before filling. The level bolt is the fill reference, so leaning the bike here would give the wrong amount.
  11. Fill with new oil until oil starts coming out of the level bolt opening.
  12. Give the oil time to settle and drain back out of the level bolt opening. Do not install the level bolt while oil is still running out.
  13. Install a new washer on the level bolt and tighten the level bolt to 5 Nm.
  14. Tighten the right motor cover metal cap to 5 Nm.
  15. Clean oil residue off the motor housing and reinstall the skid plate. Torque the skid plate bolts to 15 Nm.

Spec

  • Oil: synthetic 75W-90 gear oil.
  • Example: Maxima SXS High Performance Full Synthetic Gear Oil, 75W-90 1 Liter.
  • Tools: TRX 30 and TRX 25.
  • Consumables: new drain plug washer and new level bolt washer.
  • First change: break-in oil change at 5 riding hours.
  • Normal interval: change gear oil every 40 riding hours or every 12 months, whichever comes first.

Sources

  • Stark VARG EX owners manual, technical specifications: Motor oil is SAE 75w-90 gear oil.
  • Stark VARG EX owners manual, service intervals: break-in oil change at 5 riding hours, and gear oil changes in the 40 riding hours / 12 months service group.
  • Stark technical manual 07.019.06 Change gear oil.
  • Project torque spec table: skid plate bolts are 15 Nm.