Kawasaki KAF/KAT/KDF (Mule)

Additional Notes

• The Kawasaki Mule 2010 KAF 540 (1990-1991) carries only 0.25 liter in the front differential, one of the smallest front differential capacities across the entire KAF/KAT/KDF range. Small front differential volumes like this are typical of lighter-duty or two-wheel-drive-biased designs where the front axle plays a limited role in power distribution.
• Rear differential capacities on the Mule 2500 KAF 620C and 620D (1994-2000), the Mule 2520 KAF 620B (1993-2000), and the Mule 500/520/550 KAF 300 models all sit at 2.0-2.5 liters. Volumes in this range are characteristic of full-size rear axle housings that integrate the final drive gear set, ring and pinion, and side gears into a single shared sump.
• The Mule 2510 KAF 620A (1993-2000) specifies both a front differential at 0.4 liter and a rear differential at 2.5 liters. The rear figure is the largest rear differential capacity listed across all configurations in these specifications, reflecting the larger housing associated with a full 4x4 drivetrain on that platform.
• The Mule 500 KAF 300 (1993-1995) rear differential change interval is listed only as 12 months, without a distance or hour threshold. A time-only interval is applied when a vehicle may accumulate very low mileage or operating hours in a year, making calendar time the more reliable trigger for fluid degradation.
• Several models, including the Mule 3010 KAF 620E (2001-2003) and the Mule 4010 4x4 KAF 620M (2009-2013), specify an initial service change at 1000 km or 50 hours alongside the standard 10000 km/500 hours/12 months interval. An initial service change is intended to flush metal particles generated during the break-in period before normal wear rates stabilize.
• The Mule 3010 Diesel KAF 950 (2003-2008) and the Mule 3010 Trans4x4 Diesel KAF 950 (2007-2008) use a 6000-mile/500-hour/12-month normal interval for the front differential, while the Mule 4010 Trans4x4 Diesel KAF 950G (2009-2014) shortens the normal interval to 1200 miles/100 hours/12 months. The 100-hour threshold on the KAF 950G is notably more frequent than the 500-hour threshold seen on gasoline-engined counterparts, consistent with the higher torque and vibration loads a diesel powertrain transmits through the driveline.
• The Mule 610 4x4 KAF 400A/C (2005-2013) front differential holds 0.2 liter, the smallest front differential capacity in these specifications. The KAF 400 DE/EE and KAF 400AE variants (2014-2018) increase that figure to 0.35 liter, indicating a revised front differential housing between those generation changes on the 610 platform.
• The Mule Pro DX, Pro DXT, Pro FX, Pro FXR, Pro FXT, and Pro MX all share a front differential normal change interval expressed solely as 12 months, without a distance or hour limit. Among those, the Pro MX KAF700 (2020-) stands apart with a 0.8-liter front differential capacity, roughly double the 0.43-liter figure specified for the Pro DX, Pro DXT, Pro FX, Pro FXR, and Pro FXT models.
• The Mule Pro series initial service interval is set at 200 km or 20 hours across the Pro DX, Pro DXT, Pro FX, Pro FXR, Pro FXT, and Pro MX models. This is considerably shorter than the 1000 km/50-hour initial service interval used on earlier KAF 620 and KAF 400 models, suggesting a tighter break-in window for the Pro-series front differential components.
• The Mule SX KAF 400HJ (2016-) front differential specification separates inspection and fluid change into distinct actions: a fluid level check at 10000 km or 500 hours, and a full fluid change at 12 months. Separating the check interval from the change interval allows for condition monitoring at higher usage rates while still enforcing a time-based replacement regardless of distance or hours accumulated.
• The Mule 4010 Trans 4x4 KAT 620A (2022-) front differential retains the same 0.4-liter capacity and 10000 km/500-hour/12-month normal interval as the preceding KAF 620M generation (2009-2013), indicating continuity in front differential hardware despite the model designation and chassis code change.