General
The clutch is hydraulically actuated. The master cylinder creates pressure in the clutch fluid line. This pressure activates the secondary clutch actuator. The secondary clutch actuator piston extends and contacts a pushrod to disengage the clutch.
NOTICE
DOT 4 hydraulic brake fluid is used in the hydraulic clutch. Do not use other types of fluids as they are not compatible and could cause equipment damage. (00353b)
NOTICE
DOT 4 brake fluid will damage painted and body panel surfaces it comes in contact with. Always use caution and protect surfaces from spills whenever brake work is performed. Failure to comply can result in cosmetic damage. (00239c)
Fluid Inspection
WARNING
Contact with DOT 4 brake fluid can have serious health effects. Failure to wear proper skin and eye protection could result in death or serious injury.
  • If inhaled: Keep calm, remove to fresh air, seek medical attention.
  • If on skin: Remove contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. If irritation develops, seek medical attention.
  • If in eyes: Wash affected eyes for at least 15 minutes under running water with eye lids held open. If irritation develops, seek medical attention.
  • If swallowed: Rinse mouth and then drink plenty of water. Do not induce vomiting. Contact Poison Control. Immediate medical attention required.
  • See Safety Data Sheet (SDS) for more details available at sds.harley-davidson.com
(00240e)
NOTICE
Do not allow dirt or debris to enter the master cylinder reservoir. Dirt or debris in the reservoir can cause improper operation and equipment damage. (00205c)
Check clutch fluid level periodically. Refer to Maintenance Scheduling → Regular Service Intervals → Regular Service Intervals: 2015 Trike Models for the recommended frequency. Check lubricant level.
1. Position vehicle on a flat, level surface. Turn handlebar so master cylinder is level.
2. See Figure 1. View reservoir sight glass (3). Verify fluid presence. Sight glass appears dark if fluid is present.
NOTE
  • Fluid should never need to be added or removed from the system during normal wear.
  • Do NOT exceed FILL level. Clutch fluid volume increases with clutch wear. Over-filling can damage seals and result in damage to clutch system.
  • If fluid level is substantially above the FILL level, a worn clutch may be the cause.
3. If sight glass is not dark:
a. Check for fluid leaks in hydraulic clutch system.
b. Remove reservoir cover. Verify fluid level.
c. If fluid level is below FILL level on ledge in reservoir, add DOT 4 BRAKE FLUID as necessary. Do not exceed FILL level.
d. Inspect the clutch master cylinder cover gasket for rips, cuts, cracks and other signs of damage. Replace the gasket if necessary. Attach cover with screws. Tighten to 0.7–0.9 N·m (6–8 in-lbs).
NOTE
If the fluid level in the clutch master cylinder reservoir is correct but the clutch does not operate properly, refer to the service manual or see a Harley-Davidson dealer for service.
1Clutch master cylinder reservoir
2Reservoir cover
3Sight glass
Figure 1. Clutch Master Cylinder Reservoir