Murray M22550FC Lawn Mower Manual

The Murray M22550FC is a 22-inch, 190cc gas-powered push lawn mower featuring a Briggs & Stratton engine, 3-in-1 side discharge/mulch/bagging capability, single-lever height adjustment, durable steel deck, and easy-start system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

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 & Winterization 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: 190cc Briggs & Stratton engine, 22-inch steel cutting deck, single-lever height adjuster, rear bagger, mulch plug, side discharge chute, and recoil start.

Feature	Description
Engine	190cc Briggs & Stratton 4-cycle OHV engine
Cutting Width	22-inch steel deck
Cutting Options	Side discharge, mulching, or rear bagging
Height Adjustment	Single lever adjusts all four wheels (1.5-3.75 inches)
Start System	Recoil pull-start with primer bulb
Fuel Tank	1-quart capacity
Wheels	8-inch rear, 7-inch front plastic wheels
Handle	Foldable steel handle with cushioned grip
Bag Capacity	2.0 bushel rear bagger
Weight	Approximately 65 lbs

Assembly Instructions

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

Attach handle: Insert lower handle into deck brackets, secure with bolts and wing nuts.
Install wheels: Slide axle through deck, attach wheels with washers and retainer clips.
Attach bagger: Hook bag frame onto rear deck brackets, secure with provided pins.
Install discharge chute: Attach to side discharge opening, secure with wing nut.
Add engine oil: Fill with SAE 30 detergent oil (20 oz) before first use.

WARNING! Do not add gasoline until assembly is complete and mower is outdoors.

Safety Information

Read all instructions before operating. Always wear protective gear.

Clear mowing area of stones, toys, and other objects.
Never operate without proper guards, plates, or grass catcher.
Do not mow wet grass or in poor lighting conditions.
Keep hands and feet away from rotating blades.
Stop engine and disconnect spark plug before performing maintenance.
Refuel outdoors only, with engine off and cool.

CAUTION! Gasoline is flammable; store in approved container away from ignition sources.

Specifications

Model: Murray M22550FC
Engine: 190cc Briggs & Stratton 4-cycle
Cutting Width: 22 inches
Cutting Heights: 1.5 to 3.75 inches (6 positions)
Fuel Type: Unleaded gasoline (87 octane or higher)
Oil Type: SAE 30 detergent (20 oz capacity)
Bag Capacity: 2.0 bushels
Warranty: 2-year limited warranty
Compliance: Meets ANSI B71.1 safety standards

Controls and Operation

Main controls: Engine throttle, recoil starter, blade control bail, and height adjustment lever.

Starting Procedure:

Check oil level and add gasoline.
Move throttle control to FAST position.
Press primer bulb 3 times (cold engine).
Pull recoil starter handle firmly.

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

Blade Control Bail: Must be held against handle to keep blade engaged. Automatically stops blade when released.

Cutting Height Adjustment

Single lever adjusts all four wheels simultaneously.

Stop engine and wait for blade to stop completely.
Pull height adjustment lever toward wheel.
Move lever to desired position (1-6, lowest to highest).
Release lever to lock in position.

Tip: For first mow of season, set to highest setting. Never remove more than 1/3 of grass height at one time.

3-in-1 Discharge System

Configure for side discharge, mulching, or bagging.

Side Discharge: Install discharge chute. Grass discharges to side.
Mulching: Install mulch plug in discharge opening. Cuts clippings finely.
Bagging: Install rear bagger and remove discharge chute/mulch plug.

WARNING! Always operate with either bagger, mulch plug, or discharge chute properly installed.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Maintenance	Frequency
Check engine oil level	Before each use
Clean underside of deck	After each use
Check blade sharpness/balance	Every 25 hours
Replace air filter	Every season or 25 hours
Change engine oil	First 5 hours, then every 50 hours
Replace spark plug	Every 100 hours
Check wheel bolts/nuts	Monthly

Storage & Winterization

Proper storage prevents fuel system damage.

Run engine to burn remaining fuel in carburetor, or add fuel stabilizer.
Change engine oil and replace air filter.
Clean entire mower, especially underside of deck.
Remove spark plug, add 1 oz oil to cylinder, pull starter slowly to coat.
Store in clean, dry place, covered with tarp or in shed.

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

Warranty Information

Murray M22550FC comes with a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. Proof of purchase required. For warranty service, contact Murray customer service at 1-800-800-7310 or visit www.murray.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old gasoline, clogged air filter	Add fresh gasoline, clean/replace air filter, check spark plug.
Engine runs poorly	Dirty carburetor, old gasoline	Use fuel stabilizer, clean carburetor, replace fuel filter.
Uneven cutting	Dull blade, uneven tire pressure	Sharpen/balance blade, check tire pressure, level deck.
Excessive vibration	Loose blade, bent blade, debris	Tighten blade bolt, replace bent blade, clean deck.
Bag not filling	Wet grass, clogged deck, full bag	Mow when grass is dry, clean deck, empty bag frequently.
Wheels not turning	Debris around axles, improper assembly	Clean axle area, check wheel installation.

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