Assembling The Main Axle And Drive Axle; Installing The Transmission - Yamaha YZF-R25 Service Manual

3. Check:
• Transmission gears
Blue discoloration/pitting/wear → Replace
the defective gear(s).
• Transmission gear dogs
Cracks/damage/rounded edges → Replace
the defective gear(s).
4. Check:
• Transmission gear engagement
(each pinion gear to its respective wheel
gear)
Incorrect → Reassemble the transmission
axle assemblies.
5. Check:
• Transmission gear movement
Rough movement → Replace the defective
part(s).
EAS30435
ASSEMBLING THE MAIN AXLE AND DRIVE
AXLE
1. Install:
• 2nd pinion gear "1"
TIP
Press the 2nd pinion gear onto the main axle un-
til the press-fitting height "a" is 122.1–122.3 mm
(4.80–4.81 in) as shown in the illustration.
1
1
2. Install:
• Circlip "1" New
TIP
Align the opening between the ends "a" of the
circlip with a groove "b" in the axle.
1 New
EAS30438

INSTALLING THE TRANSMISSION

1. Install:
• Oil pump idle gear shaft "1"
TIP
Install the oil pump idle gear shaft until its flange
"a" contacts the lower crankcase.
1
2. Install:
• Shift drum assembly
• Shift fork "C"
• Shift fork "R"
• Shift fork "L"
• Springs
• Shift fork guide bars
• Shift fork guide bar retainer 2 "1"
• Shift fork guide bar retainer 1 "2"
5-91
TRANSMISSION
a
a
b
a