Power Valve; Power Valve Hole On Cylinder - Yamaha YZ125N1 Service Manual

CYLINDER HEAD, CYLINDER AND PISTON
EC474830

Power valve

1. Inspect:
9Power valve 1,2 1
Wear/Damage
Carbon deposits
9Link lever 2
9Valve shaft 3
9Collar 4
Wear/Damage
9Spring 5
Broken Replace.
EC474901

Power valve hole on cylinder

1. Remove:
9Carbon deposits
From power valve hole surface a.
NOTE:
Do not use a sharp instrument. Avoid scratching
the aluminum.
EC475000
ASSEMBLY AND INSTALLATION
EC4751A0
Power valve
1. Install:
9Power valve 1 1
9Power valve 2 2
9Bolt (power valve) 3
NOTE:
Install the power valve at cut-away faced a for
down side.
4-25
ENG
Replace.
Remove.
Replace.
8 Nm (0.8 m•kg, 5.8 ft•lb)