Cylinder Head, Cylinder And Piston - Yamaha YZ250 2022 Owner's Service Manual

EAM20190

CYLINDER HEAD, CYLINDER AND PISTON

Removing the cylinder head and cylinder
34 N ・ m (3.4 kgf ・ m, 25 lb ・ ft)
64 N ・ m (6.4 kgf ・ m, 47 lb ・ ft)
20 N ・ m (2.0 kgf ・ m, 15 lb ・ ft)
4.5 N ・ m (0.45 kgf ・ m, 3.3 lb ・ ft)
(4)
(4)
4
4.5 N ・ m (0.45 kgf ・ m, 3.3 lb ・ ft)
Order Job/Parts to remove
Seat
Fuel tank
Exhaust pipe/Silencer
Radiator hose 1
Carburetor
1 Spark plug
2 Engine bracket
3 Cylinder head
4 Power valve housing
5 Push rod
6 Cylinder
CYLINDER HEAD, CYLINDER AND PISTON
1
3
(2)
5
5-4
2
2
(6)
(6)
25 N ・ m (2.5 kgf ・ m, 18 lb ・ ft)
13 N ・ m (1.3 kgf ・ m, 9.6 lb ・ ft)
42 N ・ m (4.2 kgf ・ m, 31 lb ・ ft)
(6)
(4)
6
13 N ・ m (1.3 kgf ・ m, 9.6 lb ・ ft)
Q'ty Remarks
Refer to "GENERAL CHASSIS" on page
4-1.
Refer to "FUEL TANK" on page 7-1.
Refer to "ENGINE REMOVAL" on page 5-1.
Disconnect at cylinder head side.
Refer to "CARBURETOR" on page 7-3.
1
2
1
1
1
1