Yamaha YZ250X 2022 Owner's Service Manual

TRANSMISSION5-443. Check:• Transmission gearBlue discoloration/pitting/wear  Replacethe defective gear(s).• Transmission gear dogCracks/damage/rounded edges  Replacethe defective gear(s).4. Check:• Transmission gear movementRough movement  Replace the defectivegear(s).EAM30157INSTALLING THE TRANSMISSION1. Install:• 5th pinion gear (25T) “1”• 3rd pinion gear (16T) “2”• Collar “3”• 4th pinion gear (20T) “4”• 2nd pinion gear (15T) “5”(to the main axle “6”)TIPApply the molybdenum disulfide oil on the innerand end surface of the idler gear and on the in-ner surface of the sliding gear, then install.2. Install:• 2nd wheel gear (23T) “1”• 4th wheel gear (21T) “2”• 3rd wheel gear (21T) “3”• 5th wheel gear (21T) “4”• 1st wheel gear (27T) “5”• O-ring “6”(to the drive axle “7”)TIP• Apply the molybdenum disulfide oil on the in-ner and end surface of the idler gear and on theinner surface of the sliding gear, then install.• Apply the lithium-soap-based grease on the O-ring.3. Install:• Washer “1”• Circlip “2”TIP• Be sure the circlip sharp-edged corner “a” ispositioned opposite side to the washer andgear “b”.• Be sure the circlip end “c” is positioned at axlespline groove “d”.4. Install:• Collar “1”TIP• Apply the lithium-soap-based grease on the oilseal lip.• When installing the collar into the crankcase,MGMG63 4 521New673 2451MGGNew