Murray 7800463 Lawn Mower Manual

The Murray 7800463 is a 21-inch push lawn mower featuring a 190cc Briggs & Stratton engine, 3-in-1 mulching/bagging/side-discharge capability, single-lever height adjustment (6 positions, 1.5-3.75 inches), durable steel deck, easy-start system, and large 2.1-bushel rear bag. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 190cc Briggs & Stratton engine, 21-inch steel cutting deck, rear grass bag, height adjustment lever, recoil starter, and mulching plug.

Assembly Instructions

Unpack and inspect all parts. Assembly requires basic tools (included).

1. Attach handle: Align lower handle with deck brackets, secure with provided bolts and washers.
2. Install upper handle: Connect to lower handle, tighten wing nuts.
3. Attach grass bag: Hook bag frame onto rear deck brackets; ensure secure fit.
4. Install mulching plug (if desired): Insert into rear discharge chute.
5. Check wheel height: Ensure all wheels are set to same position.
6. Add oil and gasoline: Use SAE 30 oil (20 oz) and unleaded gasoline.

WARNING! Do not add fuel indoors or near ignition sources. Keep hands clear of cutting blade during assembly.

Safety Information

Read all instructions before operation. Always wear sturdy footwear and eye protection.

1. Clear mowing area of stones, toys, and other objects that could be thrown.
2. Never mow wet grass; reduced traction increases slip risk.
3. Do not allow children or pets in area during mowing.
4. Stop engine and disconnect spark plug wire before clearing blockages or performing maintenance.
5. Use extreme caution when mowing on slopes; mow across slopes, not up and down.
6. Never leave mower unattended with engine running.

CAUTION! The blade is sharp and rotates at high speed. Always ensure all safety devices are in place.

Specifications

• Model: Murray 7800463
• Engine: Briggs & Stratton 190cc, 4-cycle OHV
• Cutting Width: 21 inches
• Cutting Height Range: 1.5 - 3.75 inches (6 positions)
• Deck Construction: 20-gauge steel with powder coat finish
• Grass Bag Capacity: 2.1 bushels
• Wheels: 8-inch rear, 7-inch front (ball bearing)
• Fuel Tank Capacity: 1 quart
• Oil Capacity: 20 oz (SAE 30)
• Warranty: 2-year limited

Controls and Operation

Handle Controls: Throttle lever, recoil starter grip, handle height adjustment, blade control bail.

Starting Procedure:

1. Check oil and fuel levels.
2. Push primer bulb 3 times (cold engine).
3. Set throttle to FAST position.
4. Pull blade control bail toward handle.
5. Pull recoil starter cord firmly.

Stopping: Release blade control bail to stop blade. Move throttle to STOP position.

Operating Tips: Mow at steady pace; overlap passes slightly for even cut. Avoid mowing in reverse.

Cutting Height Adjustment

Single-lever adjustment controls all four wheels simultaneously.

1. Stop engine and ensure blade has stopped.
2. Pull height adjustment lever toward wheel.
3. Move lever to desired position (1-6).
4. Release lever; ensure it locks into place.
5. Check that all wheels are at same height.

Tip: For first mow of season, set to highest setting. Gradually lower for subsequent mows.

3-in-1 Function Setup

Configure for mulching, bagging, or side discharge.

1. Mulching: Install mulching plug in rear discharge chute. Ensure grass bag is removed.
2. Bagging: Remove mulching plug. Attach grass bag frame securely to rear brackets.
3. Side Discharge: Remove both mulching plug and grass bag. Install side discharge deflector (optional accessory).

WARNING! Never operate without proper discharge device installed. Always use grass bag or mulching plug or side discharge deflector.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

1. Drain fuel tank or add fuel stabilizer if storing over 30 days.
2. Run engine until it stops to clear carburetor of fuel.
3. Change oil at end of season.
4. Clean entire mower thoroughly, especially underside of deck.
5. Store in dry, covered area away from moisture.
6. Remove spark plug and add 1 tablespoon of oil to cylinder; pull starter cord slowly to distribute.

CAUTION! Never store mower with fuel in tank indoors or in enclosed spaces due to fire risk.

Warranty Information

Murray 7800463 includes a 2-year limited warranty covering defects in materials and workmanship under normal residential use. Warranty does not cover damage from misuse, neglect, commercial use, or improper maintenance. Proof of purchase required. For warranty service, contact Murray customer service at 1-800-800-7310 or visit www.murray.com. Keep this manual and purchase receipt for warranty validation.

Troubleshooting

Service: For technical support, call 1-800-800-7310 or visit www.murray.com. Always disconnect spark plug before any repair.