The Murray MNA152506 is a 150cc, 22-inch push lawn mower featuring a Briggs & Stratton engine, 3-in-1 mulching/bagging/side discharge capability, single-lever height adjustment, durable steel deck, and easy-start technology. This manual covers safety instructions, assembly, operation, maintenance, troubleshooting, and specifications to ensure proper and safe use of your mower.
Read all instructions before operating. Failure to follow warnings can result in serious injury or death.
| Hazard | Precaution |
|---|---|
| Rotating Blade | Keep hands and feet away from mower deck. Disconnect spark plug before maintenance. |
| Fuel Safety | Refuel outdoors only when engine is cool. Use approved gasoline container. |
| Slope Operation | Do not mow on slopes greater than 15 degrees. Mow across slopes, not up and down. |
| Debris and Objects | Clear mowing area of stones, toys, and other objects that could be thrown. |
| Children and Pets | Keep bystanders, especially children and pets, at a safe distance. |
| Electric Shock | Do not operate in wet grass or rain to avoid electric shock hazard. |
| Hot Surfaces | Avoid contact with muffler and engine; they become extremely hot during operation. |
Unpack all parts and verify contents against the parts list. Assembly requires basic tools (included).
WARNING! Do not attempt to start the engine until assembly is complete and all parts are securely fastened.
Familiarize yourself with the location and function of all controls before operation.
Follow these steps for safe and effective mowing.
Tip: Mow when grass is dry for best results. Avoid mowing in the heat of the day to reduce engine strain.
Regular maintenance ensures long life and optimal performance.
| Interval | Task |
|---|---|
| Before each use | Check oil level, inspect blade for damage, clear deck of debris. |
| Every 25 hours | Change engine oil (or annually). Clean or replace air filter. |
| Every season | Sharpen or replace blade. Check spark plug and replace if worn. |
| As needed | Lubricate wheel axles and height adjustment points. Check tire pressure. |
| End of season | Drain fuel or add stabilizer. Perform complete cleaning. |
CAUTION! Always disconnect the spark plug wire before performing any maintenance involving the blade or underside of the deck.
Proper storage prevents fuel system issues and corrosion.
WARNING! Never store the mower with fuel in the tank indoors or in an enclosed space due to fire and fume hazards.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine will not start | Empty fuel tank, old gasoline, clogged air filter, disconnected spark plug wire. | Add fresh fuel, clean/replace air filter, ensure spark plug wire is connected. |
| Engine runs poorly or stalls | Dirty spark plug, clogged fuel line, water in fuel. | Clean or replace spark plug, drain fuel tank and refill with fresh gasoline. |
| Uneven cutting | Dull or bent blade, uneven tire pressure, clogged deck. | Sharpen or replace blade, inflate tires to equal pressure, clean underside of deck. |
| Excessive vibration | Loose blade, damaged blade, debris stuck in blade. | Tighten blade bolt, inspect and replace damaged blade, remove debris. |
| Mower does not self-propel | Drive belt worn or broken, drive control cable loose. | Inspect and replace drive belt, adjust drive control cable tension. |
| Grass not discharging/bagging | Wet grass, deck clogged, engine speed too low. | Mow when grass is dry, clean deck, operate at full throttle. |
The Murray MNA152506 Lawn Mower is covered by a limited warranty. Please retain your proof of purchase.
Limited Warranty: 2-year limited warranty for residential use from date of purchase. Covers defects in materials or workmanship. Does not cover normal wear, misuse, neglect, or improper maintenance.
Service: For warranty service or technical support, contact Murray Customer Service at 1-800-XXX-XXXX or visit www.murray.com. Have your model and serial number (located on the mower deck) ready.
Parts: Genuine Murray replacement parts are recommended for all repairs.