Murray MP625MD21H Lawn Mower Manual

The Murray MP625MD21H is a 21-inch push lawn mower powered by a 190cc Briggs & Stratton engine, featuring a 3-in-1 discharge system (mulch/bag/side discharge), 6-position single-lever height adjustment, durable steel deck, easy-start system, and large rear wheels for enhanced maneuverability. This manual covers safety instructions, assembly, operation, maintenance, troubleshooting, and specifications to ensure proper and safe use.

1. Features at a Glance 2. Assembly Instructions 3. Safety Information 4. Specifications 5. Controls and Operation 6. Cutting Height Adjustment 7. 3-in-1 Discharge System 8. Maintenance Schedule 9. Storage Guidelines 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: 190cc Briggs & Stratton engine, 21-inch steel cutting deck, 3-in-1 discharge system, single-lever height adjustment, rear-wheel drive, and easy-start mechanism.

Feature	Description
Engine	190cc Briggs & Stratton 4-cycle engine
Cutting Width	21 inches
Cutting Deck	Durable steel construction
Discharge System	3-in-1 (mulch, bag, side discharge)
Height Adjustment	Single-lever, 6 positions (1.5-3.75 inches)
Drive System	Rear-wheel drive for better traction
Wheels	Large 8-inch rear wheels
Starter	Easy-start recoil system
Fuel Tank	0.95-gallon capacity
Weight	Approximately 65 lbs

Assembly Instructions

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

Attach handle: Align lower handle with deck brackets, secure with bolts and washers.
Install upper handle: Connect to lower handle, tighten knobs.
Attach grass bag: Hook bag onto rear discharge chute or mulch plug.
Install side discharge chute: If using side discharge, attach to deck opening.
Add engine oil: Fill with SAE 30 detergent oil (check dipstick).
Add fuel: Use fresh unleaded gasoline (87 octane or higher).

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

Safety Information

Read all instructions before operation. Always wear appropriate safety gear.

Clear mowing area: Remove stones, toys, and other objects.
Check fuel: Fill outdoors, away from ignition sources.
Wear protection: Safety glasses, long pants, and sturdy shoes.
Never mow wet grass: Risk of slipping and poor cut quality.
Keep hands and feet away: From rotating blades and discharge chute.
Turn off engine: Before unclogging, adjusting, or transporting.

CAUTION! Engine and muffler become hot during use. Allow to cool before touching.

Specifications

Model: Murray MP625MD21H
Engine: 190cc Briggs & Stratton 4-cycle
Cutting Width: 21 inches
Cutting Heights: 6 positions, 1.5 to 3.75 inches
Deck Material: Steel
Discharge Options: Mulch, Bag, Side Discharge
Wheel Size: 8-inch rear, 7-inch front
Fuel Capacity: 0.95 gallons
Oil Capacity: 20 oz (SAE 30)
Weight: 65 lbs (approx.)

Controls and Operation

Handle Controls: Drive control bar, height adjustment lever, engine controls.

Starting Engine: 1. Push primer bulb 3 times. 2. Set throttle to FAST. 3. Pull recoil starter firmly. Stopping Engine: Release drive control bar, move throttle to STOP. Drive Control: Squeeze bar against handle to engage drive; release to stop. Blade Control: Must be engaged separately (if equipped).

Cutting Height Adjustment

Single-lever adjustment for all four wheels simultaneously.

Stop engine and wait for blades to stop.
Pull lever outward and move to desired height position (1-6).
Release lever to lock in place.
Test on a small area before full mowing.

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

3-in-1 Discharge System

Configure for mulching, bagging, or side discharge.

Mulching: Install mulch plug in rear discharge opening.
Bagging: Attach grass bag to rear chute.
Side Discharge: Install side discharge chute (mulch plug removed).

WARNING! Always stop engine before changing discharge mode. Ensure attachments are securely fastened.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Maintenance Task	Frequency
Check engine oil level	Before each use
Clean under deck	After each use
Sharpen/replace blade	Every 25 hours or as needed
Replace air filter	Every season or 25 hours
Change engine oil	First 5 hours, then every 50 hours
Replace spark plug	Every 100 hours or annually
Check tire pressure	Monthly

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

Drain or stabilize fuel: Run engine dry or add fuel stabilizer.
Change oil: At end of season if due.
Clean thoroughly: Remove grass clippings from deck and undercarriage.
Store indoors: In a dry, covered area.
Disconnect spark plug: For safety during storage.

CAUTION! Never store mower with fuel in tank indoors near open flames or pilot lights.

Warranty Information

Murray mowers are backed by a limited warranty. The MP625MD21H includes a 2-year limited warranty on the mower and a 3-year limited warranty on the Briggs & Stratton engine. Proof of purchase is required. Warranty does not cover damage from misuse, neglect, or improper maintenance. For warranty claims, contact Murray customer service at 1-800-XXX-XXXX or visit www.murray.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old fuel, clogged air filter	Check fuel level; use fresh gas; clean/replace air filter.
Engine runs poorly	Dirty spark plug, stale fuel	Clean or replace spark plug; drain and refill with fresh fuel.
Uneven cutting	Dull blade, uneven tire pressure	Sharpen or balance blade; check and adjust tire pressure.
Mower vibrates excessively	Bent or unbalanced blade	Inspect blade for damage; replace if bent.
Grass not discharging	Wet grass, clogged deck	Mow when grass is dry; stop engine and clean under deck.
Loss of power	Dirty air filter, old oil	Clean air filter; change engine oil.

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