Checking the transmission (Yamaha YZF-R1 Y(C))

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1. Measure:

• Main axle runout (with a centering device and dial gauge "1")

Out of specification → Replace the main axle.

Main axle runout limit 0.08 mm (0.0032 in).



2. Measure:

• Drive axle runout (with a centering device and dial gauge "1")

Out of specification → Replace the drive axle.

Drive axle runout limit 0.08 mm (0.0032 in).



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).

6. Check:

• Circlips

Bends/damage/looseness → Replace.

See this article in russian language

Article about repair motorcycles «Yamaha R1 YZF- Y(C)» (2009-2014): «Checking the transmission»: https://motoinstruction.ru/en/Yamaha/R1/YZFR1Y/engine/transm/115522 <a href="https://motoinstruction.ru/en/Yamaha/R1/YZFR1Y/engine/transm/115522">Checking the transmission</a> - article about repair motorcycles «Yamaha R1 YZF- Y(C)» (2009-2014) from section «Transmission». [url=https://motoinstruction.ru/en/Yamaha/R1/YZFR1Y/engine/transm/115522]Checking the transmission[/url] - article about repair motorcycles «Yamaha R1 YZF- Y(C)» (2009-2014) from section «Transmission».