Yamaha YP125R Service Manual

CRANKSHAFT (YP250R)
5-117
EAS25560
DISASSEMBLING THE CRANKCASE
1. Remove:
• Crankcase bolts
T
IP
Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
2. Remove:
• Right crankcase “1”
T
IP
• Remove the right crankcase with the crank-
case separating tool “2” and M6 bolts “3”.
• Make sure that the crankcase separating tool
is centered over the crankshaft.
NOTICE
ECA37P1013
• To protect the end of the crankshaft, place
an appropriate sized socket “4” between
the crankcase separating tool bolt and the
crankshaft.
• Do not tap on the crankshaft.
EAS26020
REMOVING THE CRANKSHAFT ASSEMBLY
1. Remove:
• Timing chain “1”
T
IP
• Before removing the crankshaft assembly, re-
move the timing chain from the crankshaft
sprocket.
• The crankshaft assembly cannot be removed if
the timing chain is attached onto the crankshaft
sprocket.
2. Remove:
• Crankshaft assembly “1”
T
IP
• Remove the crankshaft assembly with the
crankcase separating tool “2” and M6 bolts “3”.
• Make sure that the crankcase separating tool
is centered over the crankshaft assembly.
NOTICE
ECA37P1013
• To protect the end of the crankshaft, place
an appropriate sized socket “4” between
the crankcase separating tool bolt and the
crankshaft.
• Do not tap on the crankshaft.
Crankcase separating tool
90890-01135
Crankcase separator
YU-01135-B
Crankcase separating tool
90890-01135
Crankcase separator
YU-01135-B

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)