Yamaha FZ 25 2021 - Engine Tightening Torques

2-11
SPEC
ENGINE TIGHTENING TORQUES
Item
Thread
size
Q’ty Tightening torque Remarks
Cylinder head bolt (Long) M8 4
Initial: 13 N·m (1.3 kgf·m, 9.6 lb·ft)
Final: 27 N·m (2.7 kgf·m, 20 lb·ft)
Apply engine oil
to the bearing
surface
Apply molybdenum
grease to the
thread
Cylinder head bolt (Socket head) M8 2 24 N·m (2.4 kgf·m, 18 lb·ft)
Spark plug M12 1 18 N·m (1.8 kgf·m, 13 lb·ft)
Cylinder head cover bolt M55 2 18 N·m (1.8 kgf·m, 13 lb·ft)
Cylinder head stud bolt (Install-
ing Exhaust pipe)
M8 2
15 N·m (1.5 kgf·m, 11 lb·ft)
Camshaft plate bolt M6 2 8 N·m (0.8 kgf·m, 7.4 lb·ft)
Sprocket cover breather plate bolt
M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Cylinder bolts (Socket head) M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Oil check bolt M6 1 7 N·m (0.7 kgf·m, 5.2 lb·ft) with gasket
Balancer gear weight nut M12 1
55 N·m (5.5 kgf·m, 41 lb·ft)
Timing chain guide stopper bolt M6 2 8 N·m (0.8 kgf·m, 5.9 lb·ft)
Valve adjusting screw locknut M6 2 14 N·m (1.4 kgf·m, 10 lb·ft)
Camshaft sprocket bolt M10 1 60 N·m (6.0 kgf·m, 44 lb·ft)
Camshaft sprocket cover bolt M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Timing chain tensioner plug M6 1 8 N·m (0.8 kgf·m, 5.9 lb·ft)
Timing chain tensioner bolt M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Apply Yamaha
bond No. 1215B
to screw thread
Oil pump assembly bolt M6 3
7 N·m (0.7 kgf·m, 5.2 lb·ft)
Engine oil drain plug M12 1 20 N·m (2.0 kgf·m, 15 lb·ft)
Oil filter element cover bolt M6 3 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Intake manifold joint M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)
Injector bolt M6 1 5 N·m (0.5 kgf·m, 3.7 lb·ft)
Throttle body joint clamp bolt M4 2 2 N·m (0.2 kgf·m, 1.5 lb·ft)
Tighten until
contacting
Air filter case bolt M6 3
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Air filter case cover screw M5 6 4 N·m (0.4 kgf·m, 3.0 lb·ft)
Exhaust pipe nut M8 2 15 N·m (1.5 kgf·m, 11 lb·ft)
Muffler installing bolt M8 1 20 N·m (2.0 kgf·m, 15 lb·ft)
Muffler installing bolt (right side
bottom)
M8 1
20 N·m (2.0 kgf·m, 15 lb·ft)
Muffler installing bolt (left side
bottom)
M8 1
20 N·m (2.0 kgf·m, 15 lb·ft)
Muffler end cap bolt M6 2 8 N·m (0.8 kgf·m, 5.9 lb·ft)
Muffler protector bolt M6 5 8 N·m (0.8 kgf·m, 5.9 lb·ft)
M
TIGHTENING TORQUES
B9X-F8197-E0.book Page 11 Thursday, July 16, 2020 2:28 PM