8-42 CHASSIS
BRAKE DISC INSPECTION
Check the brake disc surface for scratch, crack or abnormal
wear.
Measure the disc thickness at several positions using a
micrometer.
If the measurement is less than the service limit or any abnormal
condition is noted, replace the disc with a new one.
(For replacement procedure: "8-16)
% Brake disc thickness
Service Limit: 4.0 mm
& 09900-20205: Micrometer (0 – 25 mm)
Measure the runout with a dial gauge.
Replace the disc if the runout exceeds the service limit.
(For replacement procedure: "8-16)
% Brake disc runout
Service Limit: 0.3 mm
& 09900-20607: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
FRONT BRAKE MASTER CYLINDER
REMOVAL AND DISASSEMBLY
• Remove the handlebar covers. ("8-4)
• Drain brake fluid. ("2-16)
• Disconnect the brake light switch lead wires

1.
• Remove the brake hose union bolt

2.
#
• Remove the master cylinder.
Place a rag under the brake hose union bolt so that
brake fluid may not contact the parts.
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