Parts list: № Number Qty Name Options 0 8097015 2 Guard Lower Roller 2 4114406 8 Washer 19 X 36 X 4.500 mm (0.748" X 1.417" X 0.177") 3 12H236 8 Lock Washer 3/4", SUB FOR A590918 4 19M8232 8 Cap Screw M18 X 50, SUB FOR 4252880 Next page: ST15909 Upper Roller ( - 050039) ST15910 Replacement Upper Roller ( - 050039) ST15911 Carrier Roller (050040 - ) ST15912 Lower Track Chain Roller ST15913 Lower Track Chain Roller (Replacement) ST15906 Track Frame, Long Carriage