Yamaha YZ250 2021 Owner's Manual page 35

Adjustment value from the start position
(STD)
Adjustment value from the start position
(Hard)
Drive chain
Size
Chain type
Number of links
Drive chain slack (Maintenance stand)
15-link length limit
CHASSIS SPECIFICATIONS
12
0
520
Non-sealed type (YZ250)
Sealed type (YZ250X)
114
48.0–58.0 mm (1.89–2.28 in)
239.3 mm (9.42 in) (YZ250X)
242.9 mm (9.56 in) (YZ250)
2-6