Cart All manuals are sold in downloadable PDF format only. Remove item Thumbnail image Product Price Quantity Subtotal × Case IH Optum 270, 300 Tractor Service Manual $124.50 Case IH Optum 270, 300 Tractor Service Manual quantity $124.50 × Case IH 9370, 9380, 9390 Tractor Service Manual $129.70 Case IH 9370, 9380, 9390 Tractor Service Manual quantity $129.70 Coupon: Apply coupon Update cart Cart totals Subtotal $254.20 Total $254.20 Proceed to checkout Apply coupon