Murray 425604x18A Lawn Mower Manual

The Murray 425604x18A is a 18-inch push lawn mower featuring a Briggs & Stratton engine, 3-in-1 mulching/bagging/side-discharge capability, adjustable cutting heights, easy-start system, durable steel deck, ergonomic handle with soft-grip, and large rear wheels for maneuverability. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly Instructions 3. First-Time Setup 4. Specifications 5. Controls and Operation 6. Cutting Height Adjustment 7. Mulching & Bagging 8. Safety Features 9. Maintenance & Storage 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: Briggs & Stratton engine, 18-inch steel cutting deck, 3-in-1 discharge system, adjustable cutting height lever, ergonomic handle, rear-wheel drive, and grass collection bag.

Feature	Description
Engine	Briggs & Stratton 125cc 4-cycle engine
Cutting Width	18-inch steel deck
Cutting Options	Mulch, Bag, Side Discharge
Cutting Height	6-position adjustment (1-3 inches)
Drive System	Rear-wheel drive for easy pushing
Handle	Ergonomic design with soft-grip ends
Wheels	Large 8-inch rear wheels
Starter	Easy-start recoil system
Fuel Tank	0.5-gallon capacity
Weight	Approximately 55 lbs

Assembly Instructions

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

Attach handle: Align handle brackets with deck mounts, secure with provided bolts and wrench.
Install wheels: Insert axle through wheel hubs, secure with retaining clips.
Attach grass bag: Hook bag onto rear discharge chute, ensure secure attachment.
Install mulching plug: For mulching, insert plug into side discharge chute.
Add oil and fuel: Fill engine with SAE 30 oil (check dipstick), add unleaded gasoline.

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

First-Time Setup

Before first use, complete pre-operation checks.

Check oil level: Ensure oil is at full mark on dipstick.
Add fuel: Use fresh unleaded gasoline, fill to 1 inch below tank rim.
Adjust cutting height: Set lever to desired height (recommend middle setting for first use).
Test start: Pull recoil starter slowly until resistance, then briskly to start engine.
Engage blade: With engine running, press and hold safety handle to engage cutting blade.

CAUTION! Operate outdoors only. Keep area clear of children and pets.

Specifications

Model: Murray 425604x18A
Engine: Briggs & Stratton 125cc 4-cycle
Cutting Width: 18 inches
Cutting Height Range: 1 to 3 inches (6 positions)
Deck Material: Powder-coated steel
Drive: Rear-wheel push
Wheels: 8-inch rear, 7-inch front
Fuel Capacity: 0.5 gallons
Oil Capacity: 20 oz (SAE 30)
Weight: 55 lbs
Warranty: 2-year limited

Controls and Operation

Main controls: Recoil starter, throttle control, safety handle, cutting height lever, drive control.

Starting Procedure:

Check oil and fuel levels.
Move throttle to FAST position.
Prime engine (if equipped) by pressing primer bulb 3 times.
Pull recoil starter briskly.
Once started, adjust throttle as needed.

Stopping: Release safety handle to stop blade, move throttle to STOP, wait for engine to cool.

Operating Tips: Mow when grass is dry, overlap passes by 2 inches, avoid mowing in reverse.

Cutting Height Adjustment

Adjust height based on grass type and season.

Stop engine and wait for blade to stop completely.
Locate cutting height lever on each wheel.
Move lever to desired position (1-lowest, 6-highest).
Ensure all four levers are set to same position.

Recommended Settings: Bermuda grass: 1-2 inches; Fescue: 2-3 inches; First spring mow: Set to highest.

Mulching & Bagging

3-in-1 system allows quick conversion between modes.

Mulching: Install mulching plug in side discharge chute. Grass clippings are cut finely and returned to lawn as fertilizer.

Bagging: Attach collection bag to rear chute. Empty bag when full (indicator shows).

Side Discharge: Remove both plug and bag for side discharge. Use when grass is too wet or long for mulching.

Tip: For best mulching, mow when grass is dry and don't cut more than 1/3 of grass height.

Safety Features

Safety handle: Blade stops within 3 seconds when released. Blade brake system: Automatically stops blade when handle is released. Shielded discharge chute: Prevents debris ejection. RIVETED blade: Securely attaches blade to adapter.

Safety Precautions: Always wear sturdy shoes and eye protection. Clear mowing area of debris. Never remove safety devices. Don't mow on slopes greater than 15 degrees.

Maintenance & Storage

Regular maintenance ensures optimal performance and longevity.

After Each Use: Clean underside of deck, check blade for damage, wipe mower clean.

Monthly: Check air filter, clean or replace if dirty. Check spark plug.

Seasonal: Change oil every season or 25 hours. Sharpen or replace blade as needed. Lubricate wheel bearings.

Winter Storage: Drain fuel or add stabilizer. Store in dry place. Remove battery if equipped.

CAUTION! Always disconnect spark plug wire before performing maintenance.

Warranty Information

Murray 425604x18A comes with 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. To make a warranty claim, contact Murray customer service at 1-800-269-6215 or visit www.murray.com. Keep original receipt as proof of purchase.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old gas, clogged air filter	Check fuel level, use fresh gas, clean/replace air filter.
Engine runs poorly	Dirty spark plug, old fuel	Clean or replace spark plug, drain old gas.
Uneven cutting	Dull blade, uneven tire pressure	Sharpen or replace blade, check tire pressure.
Vibration	Loose blade, bent blade	Tighten blade bolt, replace bent blade.
Won't mulch properly	Wet grass, dull blade, deck clogged	Mow when dry, sharpen blade, clean deck.
Bag not filling	Clogged chute, wet grass	Clear chute, mow when grass is dry.

Service: For technical support: 1-800-269-6215. Authorized service centers listed at www.murray.com.