This document is an operator's manual for a Twin Rear Bagger, Model No. 19A70043OEM, manufactured by MTD LLC. It provides comprehensive instructions for the safe assembly, installation, operation, and maintenance of this bagging attachment, designed to enhance the performance of compatible lawn mowers.
Function Description
The Twin Rear Bagger is an attachment designed to collect grass clippings during mowing operations. It consists of a chute system that directs clippings from the mower deck into two grass bags housed within a cover at the rear of the tractor. This system helps maintain a clean lawn, prevents the accumulation of thatch, and can be beneficial for composting or disposing of clippings. The attachment is engineered to provide excellent performance when properly operated and maintained, ensuring efficient collection of cut grass.
Important Technical Specifications
While specific dimensions and material specifications are not explicitly detailed in the provided pages, the manual indicates compatibility with both 50-inch and 54-inch mower decks, distinguishing between "54" Fabricated Deck Units" and "50" and 54" Stamped Decks" for chute installation. This suggests the bagger system is adaptable to different mower deck types and sizes.
The hardware packs included with the kit contain various bolts, nuts, pins, and clamps, indicating a robust assembly. Key hardware components include:
- Carriage Bolts: 710-0276 (used for hitch side brackets and hanger assembly)
- Hex Bolts: 710-0376 (for upright support bracket), 710-3013 (for upper chute tube and extension tube), 710-0859, 710-3056 (for weight bar assembly)
- Flange Lock Nuts: 712-04063 (for various bracket assemblies), 712-04065 (for weight bar assembly)
- Clevis Pins: 911-0310 (for mounting bracket assembly)
- Cotter Pins: 914-04023 (for mounting bracket assembly)
- Cap Lock Nuts: 712-0442 (for upper chute tube and extension tube)
- Wing Knob: 720-04122 (for securing discharge chute elbow)
- Hose Clamp: 726-05019 (for flexible hose extension)
- Adhesive Rubber Strips: 721-04388 (wide) and 721-04389 (narrow) (for chute sealing)
- Chute Adapter: 731-10133 (for stamped decks)
The system includes a weight bar assembly (parts 19, 28, 29, 30, 31, 32 in the parts list) designed to be attached to the front axle of the tractor. This is a critical safety feature, particularly for RZT-L (Lap Bar) Residential Zero-turn models, as it helps maintain stability and prevent tip-overs. The manual explicitly states that the front weight kit is not required for RZT-S (Steering Wheel) Residential Zero-turn models.
The bagger system comprises several key components:
- Grass Catcher Cover: Houses the grass bags and chute system.
- Chute Tube Extension, Flexible Tube Extension, Upper Chute Tube, Discharge Chute Elbow: Form the pathway for grass clippings.
- Two Grass Bag Assemblies: The primary collection units.
- Bag Support Assembly: Holds the grass bags in place.
- Upright Support, Chute Discharge Bracket, Hitch Bracket Kit, Upper Chute Support: Structural components for mounting and support.
- Bagger Screen: Installed within the bagger cover to prevent debris from entering the engine area.
Usage Features
The manual emphasizes safe operation, providing detailed instructions and warnings. Key usage features and safety guidelines include:
- Pre-Operation Inspection: Users are instructed to thoroughly inspect the area for foreign objects, wear safety glasses, and ensure all components are properly installed before operation.
- Slope Operation: A critical safety feature is the inclusion of a slope gauge to determine safe operating angles. The manual strictly advises against operating the mower with the grass bag attachment on slopes greater than 10 degrees. It recommends mowing up and down slopes, not across, and exercising extreme caution when changing direction. Slow speeds and gradual movements are advised to prevent loss of control or tip-overs.
- Discharge Cover and Grass Catcher: The mower should not be operated without the discharge cover or entire grass catcher in place to prevent thrown objects or blade contact injuries.
- Blade Engagement/Disengagement: Users must disengage blades, set the parking brake, and stop the engine before performing any adjustments, unclogging, or emptying the bags.
- Unattended Operation: Never leave a running machine unattended.
- Grass Height: The machine is designed for normal residential grass up to 10 inches in height. Mowing unusually tall, dry grass or piles of dry leaves is discouraged due to potential fire hazards.
- Bagger Emptying: Instructions are provided for safely opening the bagger cover, removing the grass bags, and emptying clippings. The chute tube assembly should not be removed from the tractor during this process.
Maintenance Features
The manual outlines several maintenance practices to ensure the longevity and safe operation of the bagger attachment:
- Hardware Tightness: All nuts, bolts, and screws should be kept tight to ensure safe operating condition.
- Safety Interlock System: Users are warned never to tamper with the mower's safety interlock system or other safety devices and to check their proper operation regularly.
- Component Inspection and Replacement: Grass catcher components and the discharge cover are subject to wear and damage. Frequent inspection and immediate replacement with original equipment manufacturer's (OEM) parts are crucial for safety and performance.
- Safety and Instruction Labels: Maintenance or replacement of safety and instruction labels is recommended as necessary.
- Cleaning: Before cleaning, repairing, or inspecting, the blade(s) and all moving parts must have stopped, and the spark plug wire disconnected to prevent unintended starting.
- Foam Strips: The application of self-adhesive foam strips to the chute components is part of the assembly, which helps seal the system and likely contributes to efficient grass collection. These may need periodic inspection for wear and replacement to maintain optimal performance.
The manual also includes a limited warranty statement, covering defects in material and workmanship for one year from the date of purchase, with specific exclusions for normal wear parts and commercial use. It provides contact information for customer support in both the U.S.A. and Canada, emphasizing that customers should not return the machine to the retailer without first contacting the Customer Support Department.
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