Yamaha YZF-R1(B) 2012 User Manual

CLUTCH
5-63
7. Remove:
• Clutch boss nut
• Springs
• Clutch boss
• Pressure plate 2
• Conical spring washer
• Thrust washer
• Clutch housing assembly
EAS25100
CHECKING THE FRICTION PLATES
The following procedure applies to all of the
friction plates.
1. Check:
• Friction plate
Damage/wear → Replace the friction
plates as a set.
2. Measure:
• Friction plate thickness
Out of specification → Replace the fric-
tion plates as a set.
TIP
Measure the friction plate at four places.
EAS25110
CHECKING THE CLUTCH PLATES
The following procedure applies to all of the
clutch plates.
1. Check:
• Clutch plate
Damage → Replace the clutch plates as
a set.
2. Measure:
• Clutch plate warpage
(with a surface plate and thickness gauge
“1”)
Out of specification → Replace the clutch
plates as a set.
3. Measure:
• assembly width “a” of the friction plates
and clutch plates
Out of specification → Adjust.
TIP
• Perform the thickness measurement without
applying the oil.
• This step should be performed only if the fric-
tion plates and clutch plates were replaced.
• To measure the total width of the friction
plates and clutch plates, combine 9 friction
plates and 8 clutch plates as shown.
Friction plate thickness
2.92–3.08 mm (0.115–0.121 in)
Wear limit
2.82 mm (0.111 in)
A. Friction plate 1
B. Friction plate 2
Warpage limit
0.10 mm (0.0039 in)
Assembly width
42.4–43.0 mm (1.67–1.69 in)

Yamaha YZF-R1(B) 2012 Specifications

General

Brand	Yamaha
Model	YZF-R1(B) 2012
Category	Motorcycle
Language	English

Summary

How to Use This Manual

Symbols

General Information

Identification

Vehicle Identification Number (VIN) and Model Label locations.

Features

Outlines FI system, YCC-T, YCC-I, and TCS features.

YCC-T and YCC-I Systems

Explains Yamaha Chip Controlled Throttle and Intake systems.

TCS (Traction Control System) Outline

Details the Traction Control System (TCS) functionality and layout.

Important Information

Covers preparation for disassembly, replacement parts, and specific component handling.

Handling the Electronic Parts

Precautions for handling electronic parts to avoid damage from static electricity or impact.

Special Tools

Lists specific tools, part numbers, and reference pages for tune-up and assembly.