1994-2001 Yamaha YZ125 – Bottom End Specifications

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Yamaha LogoTop End Specifications For Your 1997-2001 Yamaha YZ125

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Crankshaft Service Specifications

New – mm (in.)Service Limit – mm (in.)
Crankshaft Web Width55.90 – 55.95 (2.201 – 2.203)
Crankshaft Runout Limit0.03 (0 – 0.0012)0.05 (0.0020)
Connecting Rod-to-Crankshaft Side Clearance0.20 – 0.70 (0.008 – 0.026)
Small End Side-to-Side Free Play
– 1994 – 19950.4 – 1.0 (0.016 – 0.039)2.0 (0.08)
– 1996 – 20010.8 – 1.0 (0.031 – 0.039)2.0 (0.08)

 

Bottom End Torque Specifications

ft.-lbin.-lb.N•n
Crankcase Bearing Retaining Screws8810
Crankcase Mounting Bolts12414
Cylinder head Hanger Nuts2534
Engine Mounting Nuts
– Upper Bracket2534
– Pivot Shaft6385
– Upper Mount3243
– Lower Mount5169
– Front Mount2534
Primary Drive Gear Bolt4155
Flywheel Nut2738
Shift Drum Cam Mounting Bolt2230
Swing Arm Pivot Shaft Nut6385
Transmission Oil Drain Bolt1520

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