Murray MX675RMD22H Lawn Mower Manual

The Murray MX675RMD22H is a 22-inch, 6.75 HP Briggs & Stratton powered rear-wheel drive push lawn mower with a 2-in-1 side discharge and mulching capability, 3-position cutting height adjustment, and durable steel deck. It features a recoil start system, fold-down handle for storage, and a 2.1 bushel grass bag. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 6.75 HP Briggs & Stratton engine, 22-inch steel cutting deck, Rear-wheel drive, 2-in-1 side discharge/mulching system, 3-position single-lever height adjustment, Fold-down handle, 2.1 bushel grass bag.

Assembly Instructions

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

1. Attach Lower Handle: Bolt lower handle sections to deck using provided hardware.
2. Attach Upper Handle: Connect upper handle to lower handle, secure with knobs.
3. Install Grass Bag: Attach bag support brackets to deck, hang grass bag.
4. Install Mulching Plug: If using mulching function, insert plug into discharge chute.
5. Add Engine Oil: Fill engine with SAE 30 detergent oil (approx. 20 oz.) as per manual.
6. Add Gasoline: Use fresh unleaded gasoline (no more than 30 days old).

WARNING! Do not add gasoline during assembly or near open flames. Ensure all bolts are tightened securely.

First-Time Setup

Before first use, complete final checks and adjustments.

1. Check Oil Level: Ensure oil is at full mark on dipstick.
2. Check Tire Pressure: Inflate all tires to 20 PSI.
3. Adjust Cutting Height: Set lever to desired height (middle position recommended for first mow).
4. Inspect Blade: Ensure blade is sharp and securely fastened (bolt torque: 450-600 in-lbs).
5. Start Engine: On flat surface, pull recoil starter cord briskly.

CAUTION! Keep hands and feet away from cutting deck. Clear mowing area of debris.

Specifications

• Model: MX675RMD22H
• Engine: Briggs & Stratton 6.75 HP, 4-cycle, OHV
• Cutting Width: 22 inches
• Cutting Heights: 1.5", 2.5", 3.75"
• Drive: Rear-wheel drive
• Deck Material: Powder-coated steel
• Grass Bag Capacity: 2.1 bushels
• Wheel Size: Front: 7", Rear: 8"
• Weight: Approx. 65 lbs
• Fuel Capacity: 1.0 quart
• Oil Capacity: 20 oz. (SAE 30)

Controls and Operation

Primary controls located on handle. Engine Controls: Throttle lever (FAST/SLOW/STOP), Recoil starter grip. Mower Controls: Blade control lever (must be held for blade rotation), Drive control lever (engages rear wheels), Height adjustment lever.

Starting Procedure: 1. Move throttle to FAST. 2. Push primer bulb 3 times (cold engine). 3. Hold blade control lever against handle. 4. Pull recoil starter briskly.

Stopping: Release blade control lever OR move throttle to STOP.

Cutting Height Adjustment

Single lever adjusts all four wheels simultaneously.

1. Stop engine and wait for blade to stop completely.
2. Pull height adjustment lever outward and move to desired position (1, 2, or 3).
3. Release lever to lock into place.
4. Verify all wheels are at same height by checking deck level.

Tip: For first mow of season or very tall grass, use highest setting, then lower for subsequent passes.

Mulching & Bagging

2-in-1 system: Install plug for mulching; remove plug for side discharge/bagging.

1. Mulching: Insert mulching plug fully into discharge chute. Cuts clippings finely and returns them to lawn as fertilizer.
2. Bagging: Remove mulching plug. Attach grass bag to rear brackets. Empty bag when full (indicator window shows level).
3. Side Discharge: Remove mulching plug and grass bag for side discharge (use in tall/wet grass).

WARNING! Always stop engine before changing cutting mode. Keep hands away from discharge chute.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Storage & Winterization

Proper storage prevents fuel system issues and corrosion.

1. Run engine to burn remaining fuel in carburetor OR add fuel stabilizer to full tank.
2. Change engine oil (dirty oil contains acids that can damage engine).
3. Remove spark plug, add 1 tablespoon of oil to cylinder, pull starter cord slowly to coat cylinder wall, reinstall plug.
4. Clean entire mower, especially underside of deck.
5. Store in dry place, cover with breathable fabric (not plastic).

CAUTION! Never store mower with gasoline in tank indoors or near open flame.

Safety Information

Read and understand all safety instructions before operation.

• Always wear sturdy shoes and eye protection.
• Clear mowing area of stones, toys, and other objects.
• Do not mow wet grass or in poor light conditions.
• Never remove grass bag or unclog chute with engine running.
• Keep children and pets away from mowing area.
• Use extreme caution when mowing on slopes; mow across slope, not up/down.
• Disconnect spark plug wire before performing any maintenance.

DANGER! Rotating blade can cause severe injury. Always ensure blade has stopped before crossing gravel drives, roads, or approaching discharged material.

Troubleshooting

Service: For technical support, contact Murray customer service at 1-800-800-7310 or visit www.murray.com