The GrassFlap 412T is an operator-controlled discharge chute (OCDC) system designed for commercial turf equipment, specifically mowers, to manage grass clippings. It allows the operator to control the opening and closing of the discharge chute, offering flexibility in mulching and discharge patterns.

Function Description:

The GrassFlap 412T system consists of a flap assembly, a blocker plate, a deflector angle, a spring mount, and a cable-actuated pedal assembly (available in SE, SEL, and RE configurations). The core function is to provide an operator with the ability to open or close the mower's discharge chute on demand. When closed, the system helps retain clippings under the mower deck for a longer period, enhancing mulching capabilities and acting as a safety shield. When open, it allows for standard discharge of clippings. The cable connects the pedal to the flap, allowing the operator to control the flap's position by pressing the pedal. The flap is spring-loaded, holding it closed and also in the open position. The system is designed for a "no-drill mount" installation for the main flap assembly on many mowers, simplifying the setup process.

Important Technical Specifications:

The system utilizes various components with specific part numbers:

Flap Assembly: Includes components like the Flap Spring (10-99-11), Flap Mount 12 (10-99-55), Bushing Spring Bolt (10-99-32), Low Profile Spring Mount (10-99-31), Bushing Kit for Flap Hex (10-99-52), 5/16 x 3/4 Hex Bolt, Clevis Pin (10-99-22), Bushing Cable Pin Flap End (10-99-28), Blocker Plate (10-99-15), Deflector Angle (10-99-12), and Hinge Plate Low Profile 8-inch (10-99-42).
Cable Assemblies: Available in different lengths: Cable 70 Inch (10-99-07) and Cable 50 Inch (10-99-08).
Pedal Assemblies: Three main types are offered: SE Pedal Assembly (10-99-35), RE Pedal Assembly (10-99-13), and SEL Pedal Assembly (10-99-41). Each pedal type has a corresponding Bushing Kit for Pedal Hex (10-99-51) and Clevis Kit (10-99-21).
Fasteners: The installation involves 3/8-16 x 1" hex bolts and nuts for the no-drill mount, 5/16-18 x 3/4" carriage bolts for the spring mount, 1/4" holes for the blocker plate tee nuts, and 5/16" x 1" carriage bolts for pedal mounting.
Cable Routing: Critical specifications include maintaining a minimum of 1/2 inch straight cable conduit past the end fitting, avoiding bends in the cable wire near the ball, and ensuring a minimum bend radius of 6 inches for all cable bends.
Pedal Height: Adjustable to ensure the pedal bottoms out on a hard stop, preventing the cable from carrying the full weight of the operator.
Blocker Plate Overhang: A minimum of 1½ inches at the rear and 1/2 inch front and back is recommended for the blocker plate.

Usage Features:

Operator Control: Provides immediate control over the discharge chute, allowing operators to adapt to varying mowing conditions and discharge requirements (e.g., mulching in dense areas, discharging in open fields).
Enhanced Mulching: When the flap is closed, it helps keep clippings under the deck longer, promoting finer mulching.
Safety Shield: Functions as a safety shield when closed, reducing the risk of thrown objects.
Partial Open Position: The flap can be held in a partially open position using the foot pedal, offering nuanced control over clipping discharge.
Smooth Operation: Designed for a smooth push-and-release motion to open and close the flap without requiring a separate locking mechanism.
No-Drill Mount: Simplifies installation on compatible mowers by utilizing existing mounting points, reducing the need for drilling.
Deflector Angle: The deflector angle travels with the flap, preventing clippings from blowing straight up when the flap begins to open.

Maintenance Features:

Cable Installation Checklist: A detailed checklist is provided to ensure correct cable installation, covering aspects like straightness, security, pedal height, and rubber boot placement. This is crucial for the longevity of the cable.
Cable Maintenance: Emphasizes keeping the rubber boot in place to protect the cable fitting from dirt and water.
Proper Cable Routing: Detailed instructions and warnings are given regarding cable routing to prevent premature failure. This includes avoiding direct heat, ensuring sufficient slack, and maintaining the minimum bend radius.
Troubleshooting Guide: A "Frequently Asked Questions" section addresses common issues like cable breakage and the flap opening only halfway, providing guidance on diagnosis and resolution.
Warranty: A 90-day warranty covers defects in workmanship and materials, with specific conditions for claims, including providing pictures of broken cables and a completed installation checklist.
Safety Warnings: Comprehensive safety warnings are included, covering thrown objects, moving parts, children, and general safety precautions during operation and maintenance. These emphasize disengaging power, setting brakes, and removing the key before any adjustments or repairs.

The GrassFlap 412T is designed to be a robust and user-friendly accessory that enhances the functionality and safety of commercial mowers by providing precise control over grass clipping discharge. Proper installation and adherence to maintenance guidelines are critical for optimal performance and cable longevity.

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