Murray 309007x151A Lawn Mower Manual

The Murray 309007x151A is a 21-inch push lawn mower with a 159cc Briggs & Stratton engine, featuring a 3-in-1 mulching, bagging, and side-discharge system, single-lever height adjustment (1.5-4 inches), durable steel deck, easy-start system, and rear-wheel drive. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 159cc Briggs & Stratton engine, 21-inch steel cutting deck, 3-in-1 discharge system, single-lever height adjustment, rear-wheel drive, easy-start system, and grass bag.

Assembly Instructions

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

1. Attach handle: Align handle with deck brackets, secure with provided bolts and washers.
2. Install wheels: Insert axle through deck brackets, secure wheels with retaining clips.
3. Attach grass bag: Hook bag onto rear discharge chute, secure with clips.
4. Install discharge chute: Attach side discharge chute if using side-discharge mode.
5. Add oil and fuel: Fill engine with SAE 30 oil (20 oz), add unleaded gasoline.

WARNING! Wear gloves during assembly. Ensure all bolts are tightened securely.

First-Time Setup

Before first use, complete these steps.

1. Check oil level: Ensure oil is at full mark on dipstick.
2. Add fuel: Use fresh unleaded gasoline with minimum 87 octane.
3. Adjust cutting height: Set lever to desired height (recommend 3 inches for first mow).
4. Test start: Pull recoil starter slowly until resistance, then briskly to start engine.
5. Check safety features: Verify blade control lever stops blade within 3 seconds of release.

CAUTION! Operate outdoors only. Keep children and pets away during setup.

Specifications

• Model: Murray 309007x151A
• Engine: 159cc Briggs & Stratton 4-cycle
• Cutting Width: 21 inches
• Cutting Height Range: 1.5 to 4 inches
• Deck Material: 20-gauge steel
• Discharge Options: Mulch, bag, side discharge
• Fuel Capacity: 0.5 gallons
• Oil Capacity: 20 oz SAE 30
• Wheel Size: 8-inch rear, 7-inch front
• Weight: 65 lbs (approx.)

Controls and Settings

Handle Controls: Blade control lever (must be held to operate), drive control lever, height adjustment lever.

Engine Controls: Throttle control (FAST/SLOW), choke control, primer bulb, recoil starter.

Height Adjustment: Single lever adjusts all four wheels simultaneously. Discharge Selection: Install mulch plug for mulching, bag for collection, or chute for side discharge. Drive Control: Engage rear wheels by squeezing lever against handle.

Operating the Mower

Starting: Set throttle to FAST, press primer 3 times, pull recoil starter. Stopping: Release blade control lever.

1. Clear area: Remove stones, toys, and debris from lawn.
2. Select mode: Install appropriate attachment (bag, mulch plug, or side chute).
3. Adjust height: Set cutting height for grass conditions.
4. Start engine: Follow starting procedure above.
5. Engage blade: Hold blade control lever against handle.
6. Mow pattern: Overlap passes by 2-3 inches for even cut.
7. Empty bag: Stop engine before emptying grass bag.

Tip: Mow when grass is dry for best results. Avoid mowing in wet conditions.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

1. Before each use: Check oil level, inspect blade for damage, clear deck of debris.
2. Every 25 hours: Change engine oil, clean or replace air filter.
3. Every season: Sharpen or replace blade, check spark plug, lubricate wheels.
4. Storage: Drain fuel or add stabilizer, clean entire mower, store in dry place.

WARNING! Always disconnect spark plug wire before performing maintenance.

Storage Instructions

Prepare mower for off-season storage.

1. Clean thoroughly: Remove grass clippings from deck, wheels, and engine.
2. Fuel management: Run engine until fuel tank is empty OR add fuel stabilizer.
3. Oil change: Replace oil if due for change.
4. Blade care: Sharpen blade and apply light oil to prevent rust.
5. Storage location: Store in dry, covered area away from moisture.

CAUTION! Never store mower with fuel in tank indoors without stabilizer.

Safety Information

Read and understand all safety instructions before operation.

• Wear appropriate clothing: Long pants, sturdy shoes, eye protection.
• Clear mowing area: Remove stones, sticks, and other objects.
• Never remove safety devices: Keep all guards and shields in place.
• Stop engine: Before unclogging, adjusting, or leaving mower unattended.
• Keep hands and feet away: From rotating blades and moving parts.
• Use outdoors only: Never operate in enclosed spaces.
• Children: Keep away from mowing area.

Warranty Information

Murray 309007x151A comes with a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. For warranty service, contact Murray customer service at 1-800-800-7310 or visit www.murray.com. Keep original receipt as proof of purchase.

Troubleshooting

Service: For technical support, call 1-800-800-7310 or visit www.murray.com