Yamaha YZ250 2021 Owner's Manual

TIGHTENING TORQUES2-9Silencer bolt M6 2 12 N·m (1.2 kgf·m, 8.9 lb·ft) /Fiber bolt M6 4 10 N·m (1.0 kgf·m, 7.4 lb·ft)Crankcase bolt M6 11 14 N·m (1.4 kgf·m, 10 lb·ft)Crankcase cover screw (left) M6 5 5 N·m (0.5 kgf·m, 3.7 lb·ft)Drive sprocket cover screw M6 2 5 N·m (0.5 kgf·m, 3.7 lb·ft)Crankcase cover screw (right) M6 9 10 N·m (1.0 kgf·m, 7.4 lb·ft)Bearing plate cover screw (drive axleleft) M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Bearing plate cover bolt (main axleright) M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Holder bolt M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Oil drain bolt M12 1 23 N·m (2.3 kgf·m, 17 lb·ft)Oil check bolt M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)Neutral switch lead holder bolt M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)Kickstarter lever M8 1 30 N·m (3.0 kgf·m, 22 lb·ft)Ratchet wheel stopper bolt M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Clutch cover bolt M6 6 10 N·m (1.0 kgf·m, 7.4 lb·ft)Primary drive gear bolt M10 1 55 N·m (5.5 kgf·m, 41 lb·ft)Clutch boss nut M20 1 75 N·m (7.5 kgf·m, 55 lb·ft)Use aLockwasher.Clutch spring bolt M6 6 10 N·m (1.0 kgf·m, 7.4 lb·ft)Locknut (clutch cable side) M6 1 4.3 N·m (0.43 kgf·m, 3.2 lb·ft)Push lever shaft bolt M5 1 6 N·m (0.6 kgf·m, 4.4 lb·ft)Drive sprocket nut M20 1 75 N·m (7.5 kgf·m, 55 lb·ft) Use aLockwasher.Shift guide bolt M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Stopper lever bolt M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)Tension spring (shift shaft) stopperbolt M8 1 22 N·m (2.2 kgf·m, 16 lb·ft)Segment M8 1 30 N·m (3.0 kgf·m, 22 lb·ft)Bearing plate cover screw (shift camright) M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)Shift pedal bolt M6 1 12 N·m (1.2 kgf·m, 8.9 lb·ft)Stator coil screw M6 3 7 N·m (0.7 kgf·m, 5.2 lb·ft)CDI magneto rotor nut M12 1 56 N·m (5.6 kgf·m, 41 lb·ft)Ignition coil bolt M6 2 7 N·m (0.7 kgf·m, 5.2 lb·ft)Neutral switch screw M5 2 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)Item Threadsize Q’ty Tightening torques RemarksLTLTLTLTLTLTLTLTLT