User manual MTD 23HP

[. . . ] Hydrostatic Zero-Turn Riding Mower MODEL 23HP 53AB5BBP7502 50" Stamped Deck OPERATOR’S AND SERVICE MANUAL TABLE OF CONTENTS Foreword. 27 Warranty This product may be covered by one or more of the following patents: D409, 208; 5, 946, 894; 6, 070, 690 2 FORWARD The Hydrostatic Zero-Turn Riding Mower provides superb maneuverability. The machine incorporates many safety features that should be studied by all operators before use. This manual presents all of the operating and maintenance instructions necessary to keep your mower at peak efficiency. [. . . ] Jack up the front of the mowing deck about one foot and block it in that position. To prevent the blade from turning, secure the blade by placing by placing a block of wood between the blade and the deck housing. Use a 1-1/8" socket wrench on the pulley side of the spindle to secure. To replace the blade reverse the above process and tighten nut to 100-120 ft. Sharpen blades evenly at the original 30° angle to maintain balanced cutting blades. Use a electric blade sharpener, a conventional electric grinder or a hand file to sharpen the blades. Replace any blade with severe nicks or dents that cannot be removed by filing. Check the balance of the blade after sharpening by placing it on a blade balancer. If the blade dips on one end, file stock off of the cutting surface on that end. Note: Blades that cannot be easily balanced—REPLACE. 3. Changing the Blade Drive Belts: a. Using a 1/2" socket breaker bar or socket rachet insert the male end into the 1/2" opening in the lower idler arm assembly and pull the idler arm clockwise. While holding the idler arm back, loosen the 15 Cover Plate Spindle Figure. 7 blade drive belt from the pulley and slide the belt away from the pulley. Pull the tensioner pulley away from the belt and remove the PTO belt then remove the blade drive belt. Reverse the process to install the belt. Hydraulic Tank Adding Hydraulic Oil (use SAE20W 50) Place the Mower on a level surface and engage the parking brake. Pour hydraulic oil into the reservoir up to the lowest hole in the oil tank fill neck, if necessary. Draining Hydraulic Oil Used hydraulic oil must be disposed of properly. Do not pour it down a drain or sewer, or dump it on open land, this creates an environmental hazard. Please be aware of the environment when disposing of used oil. Note: When replacing belts do not overtighten. Adjust the idler pulley so that a tenpound pull with a spring scale between two pulleys deflects the belt about 1/2". 4. Changing the Spindle Assembly a. Jack up the front of the mowing deck about one foot and block it in that position. Using a wrench or socket rachet remove four hex nuts, and the four hex head cap screws. Remove the spindle assembly. B. Hydraulic Oil WARNING: Never overfill the hydraulic units. [. . . ] Adjust the rear jam nut at Point D to take the “slack out of the threaded rod. The final adjustment would be to take the “slack” out of the left rear linkage (Point D) by adjusting the jam nuts on the eyebolt. Loosen the jam nuts and tighten the upper nut to remove “slack”. In many cases it will be necessary to adjust deck height using both eyebolt adjustments and pitch adjustment to achieve the correct blade-toground heights. [. . . ]