Yamaha YZF-R125 Service Manual: Assembling the crankcase
1. Thoroughly clean all the gasket mating surfaces and crankcase mating surfaces.
2. Apply:
- Sealant
(onto the crankcase mating surfaces)
NOTE:
Do not allow any sealant to come into contact with the oil gallery.
3. Install:
- Right crankcase
NOTE:
Turn the shift drum segment "1" to the position shown in the illustration. In this position, the shift drum segment teeth will not contact the crankcase during crankcase installation.
4. Install:
- Crankcase bolts
NOTE:
Tighten each bolt 1/4 of a turn at a time, in stages and in the proper sequence as shown.
- M6 × 70 mm : "7-9", "11"
- M6 × 55 mm : "14", "15"
- M6 × 45 mm : "1-5", "10"
A. Left crankcase
B. Right crankcase
Installing the bearing retainer
1. Install:
Bearing retainer "1"
NOTE:
Install the bearing retainer "1" with its "OUT"
mark "a" facing outward.
Apply locking agent (LOCTITE) to the
threads of the bearing retainer bo ...
Crankshaft
...
Other materials:
Replacing a turn signal light bulb
Remove the turn signal light lens
by removing the screw.
Screw
Remove the burnt-out bulb by
pushing it in and turning it counterclockwise.
Insert a new bulb into the socket,
push it in, and then turn it clockwise
until it stops.
Install the lens by installing ...
Checking the connections
Check the leads, couplers, and connectors for
stains, rust, moisture, etc.
1. Disconnect:
Lead
Coupler
Connector
2. Check:
Lead
Coupler
Connector
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect several
times.
3. Check:
All co ...
Lubrication diagrams
Clutch push lever
Main axle
Drive axle
Crankshaft
Oil filter
Oil pump assembly
Oil strainer
To cylinder head
Camshaft
Crankshaft
Main axle
Drive axle
...