Harley-Davidson 2022 Street Bob 114: Primary-Chaincase Oil Change.

Wet Refill (Standard Change): Approximately 34 oz (1.0 liter). Dry Refill (After Disassembly): Approximately 38 oz (1.1 liters). Level the Bike: The motorcycle must be upright (not on the kickstand) to get an accurate reading. Check the Level: Instead of just pouring in the full amount, add about 30 oz first. Look through the derby cover; the oil should just touch the bottom of the clutch pressure plate (the large circular assembly). Oil Type: Use a dedicated primary chaincase lubricant or a high-quality 20W-50 synthetic motorcycle oil (like Mobil 1 V-Twin or Screamin' Eagle SYN3). Always replace the Derby Cover O-ring and the drain plug O-ring to prevent leaks. Tighten the drain plug to 14–21 ft-lbs and the derby cover screws to 84–108 in-lbs in a star pattern.