CS-300, CS-301, CS-305, CS-306, CS-3000, CS-340, CS-341
CS-3400, CS-345, CS-346, CS-3450, CS-330T, CS-360T, CS-330MX4
With the unit OFF, look on the top of the gray engine cover below the handle. The model and serial number is on a
black and white sticker in this area.
See picture below:
CS-370, CS-352, CS-310, CS-400, CS-600P, CS-500P, CS-550P
With the unit OFF, look on the side of the unit where the starter housing and fuel/oil caps are located. The model
and serial number will be on a black and white sticker attached to the orange housing above the oil cap.
See picture below:
CS-450, CS-355T, CS-450P, CS-440, CS-4400, CS-500VL, CS-510, CS-520, CS-530, CS5000, CS-670, CS-680, CS-6700, CS-8000
With the unit OFF, look on the side of the unit below the bar and chain cover, just below the clutch. The serial
number tag is a black and silver metal tag that is riveted to the case.