Yamaha YZ125X 2022, Owner'S Service Manual

Page: 165 / 268

CYLINDER HEAD, CYLINDER AND PISTON
5-5
EAM20190
CYLINDER HEAD, CYLINDER AND PISTON
Removing the cylinder head and cylinder
Order Job/Parts to remove Q’ty Remarks
Seat
Refer to “GENERAL CHASSIS” on page
4-1.
Fuel tank Refer to “FUEL TANK” on page 7-1.
Exhaust pipe/Silencer Refer to “ENGINE REMOVAL” on page 5-1.
Radiator hose 1 Disconnect at cylinder head side.
Carburetor Refer to “CARBURETOR” on page 7-3.
1 Spark plug 1
2 Engine bracket 2
3 Cylinder head 1
4 Power valve housing 1
5 Push rod 1
6 Cylinder 1
1
2
3
4
5
(4)
(5)
6
1 3 N ・ m (1. 3 k g f ・ m, 9.6 lb ・ ft)
20 N ・ m (2.0 k g f ・ m, 15 lb ・ ft)
3 4 N ・ m ( 3 .4 k g f ・ m, 25 lb ・ ft)
2 8 N
・
m (2. 8 k g f
・
m, 21 lb
・
ft)
4.5 N ・ m (0.45 k g f ・ m, 3 . 3 lb ・ ft)
4.0 N ・ m (0.40 k g f ・ m, 3 .0 lb ・ ft)
3 0 N
・
m ( 3 .0 k g f
・
m, 22 lb
・
ft)