Squeezing the left hand lever causes the clutch master cylinder to actuate and apply pressure to the clutch actuation cylinder mounted in the engine right side cover. The actuation cylinder piston extends and contacts the clutch release bearing to release the clutch.
Refer to Maintenance Scheduling → Regular Service Intervals → Regular Service Intervals: 2005 VRSCSE Models. Check the fluid level as follows:
1. Stand the motorcycle upright (not leaning on the jiffy stand) on a level surface, so the top of the clutch master cylinder is level.
2. See Figure 1. Clean all dirt and debris from the clutch master cylinder cover (1). Remove the two clutch master cylinder cover screws (2) and remove the cover.
3. Verify the fluid level in the clutch master cylinder reservoir is at the FULL LEVEL mark at the top of the ledge on the rear inside wall of the reservoir. If the fluid level is low, add D.O.T. 5 SILICONE HYDRAULIC BRAKE FLUID (Part No. 99902-77) approved for clutch system use and available from a Harley-Davidson dealer.
Do not overfill the clutch master cylinder reservoir. As the clutch friction discs wear, the piston in the clutch cylinder will force fluid back into the reservoir which could cause fluid overflow.
DOT 5 silicone 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. (00204b)
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)
Direct contact of DOT 5 brake fluid with eyes can cause eye irritation, swelling, and redness. Avoid eye contact. In case of eye contact flush with large amounts of water and get medical attention. Swallowing large amounts of DOT 5 brake fluid can cause digestive discomfort. If swallowed, obtain medical attention. Use in well ventilated area. KEEP OUT OF REACH OF CHILDREN. (00144b)
4. Inspect the clutch master cylinder cover gasket for rips, cuts, cracks, or other signs of damage. Replace the gasket if necessary. Carefully place the cover and cover gasket on the master cylinder reservoir and secure with the two cover screws. Tighten the screws to 0.68–0.9 N·m (6–8 in-lbs).
If the fluid level in the clutch master cylinder reservoir is correct but the clutch does not operate properly, refer to the VRSC Service Manual or see a Harley-Davidson dealer for service.
2Screws (2)
Figure 1. Clutch Master Cylinder Reservoir