Yamaha YZ250X 2022 Owner's Service Manual

CYLINDER HEAD, CYLINDER AND PISTON5-112. Install:• Power valve 2 “1”• Link rod “2”• Washer “3”• Link rod screw “4”TIPInstall the link rod with the cuts “a” in its arm endsfitting over the pins “b” on the power valves 2.3. Install:• Thrust plate “1”• Thrust plate screw “2”TIPBe sure to install the thrust plate to the cylinderbefore installing the power valve shaft.4. Install:• Spring 1 “1”• Power valve link lever “2”• Pulley “3”• Spring 2 “4”• Washer “5”• Power valve shaft “6”TIP• Install the spring 1 to the power valve link lever,and then to the cylinder.• Install the spring 1 with its stopper portion “a”facing inward.• Apply the molybdenum disulfide oil on thegrooves in the pulleys.• Apply the lithium-soap-based grease on the oilseal lip.• Install the power valve shaft with its cut “b”aligning with the thrust plate “7”, and then ro-tate the power valve shaft so that its cut facesupward.5. Install:• Power valve holder 1 “1”• Power valve link lever bolt “2”• Pulley bolt “3”Link rod screw6 N·m (0.6 kgf·m, 4.4 lb·ft)Thrust plate screw6 N·m (0.6 kgf·m, 4.4 lb·ft)MLT32 1aT R..T R..Power valve link lever bolt4.0 N·m (0.40 kgf·m, 3.0 lb·ft)Pulley bolt4.0 N·m (0.40 kgf·m, 3.0 lb·ft)M M1a2136 5 1 1 52 34 4T R..T R..