Yamaha YZ450F(W) Owner's Service Manual page 560

SWINGARM
13. Install:
• Bolt [chain tensioner (lower)] 1
• Plain washer 2
• Collar 3
• Chain tensioner (lower) 4
• Nut [chain tensioner (lower)] 5
14. Install:
• Chain support 1
• Support cover 2
• Bolt {chain support [ = 50 mm (1.97 in)]}
3
• Nut (chain support) 4
• Bolt {support cover [ = 10 mm (0.39 in)]}
5
5 - 61
CHAS
16 Nm (1.6 m · kg, 11 ft · lb)
7 Nm (0.7 m · kg, 5.1 ft · lb)
7 Nm (0.7 m · kg, 5.1 ft · lb)