Ariens 911051 Lawn Mower Manual

The Ariens 911051 is a high-performance walk-behind lawn mower featuring a durable steel deck, powerful engine options, adjustable cutting heights, rear bagging system, mulching capability, and easy-start technology. Designed for residential use, it offers reliable performance for maintaining medium to large lawns. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly & Setup 3. Controls and Operation 4. Specifications 5. Maintenance Schedule 6. Blade Care & Sharpening 7. Storage Guidelines 8. Safety Information 9. Warranty Information 10. Troubleshooting

Features at a Glance

Key components: Steel cutting deck, Briggs & Stratton engine, height adjustment lever, rear collection bag, mulching plug, recoil starter, and safety handle.

Feature	Description
Cutting Deck	21-inch steel deck for durable cutting performance
Engine	Briggs & Stratton 140cc OHV engine with easy-start technology
Cutting Height	6-position adjustment (1.5" to 4")
Drive System	Single-speed rear-wheel drive
Collection System	Rear bag with 2.5 bushel capacity
Mulching Capability	Includes mulching plug for nutrient recycling
Starter	Recoil pull-start mechanism
Safety Features	Deadman control handle, blade brake system
Wheels	8-inch rear, 7-inch front wheels for maneuverability
Weight	Approximately 65 lbs

Assembly & Setup

Unpack and inspect all parts. Assembly requires basic tools.

Attach handle: Secure upper and lower handle sections with provided bolts.
Install wheels: Slide wheels onto axles and secure with retaining clips.
Attach collection bag: Hook bag onto rear deck brackets.
Add engine oil: Fill with SAE 30 detergent oil (check dipstick).
Add gasoline: Use fresh unleaded gasoline (87 octane minimum).

WARNING! Always wear protective gloves during assembly. Ensure all fasteners are tight before operation.

Controls and Operation

Familiarize yourself with controls before starting.

Starting engine: Set throttle to FAST, prime 3 times, pull starter cord.
Cutting height adjustment: Move lever to desired position on all wheels.
Bagging vs. mulching: Install bag for collection; insert plug for mulching.
Stopping engine: Release safety handle; move throttle to STOP.

CAUTION! Keep hands and feet away from cutting deck during operation. Clear lawn of debris before mowing.

Specifications

Model: Ariens 911051
Cutting Width: 21 inches
Engine: Briggs & Stratton 140cc, 4-cycle OHV
Fuel Capacity: 0.5 gallons
Oil Capacity: 20 oz (SAE 30)
Cutting Heights: 1.5", 2", 2.5", 3", 3.5", 4"
Bag Capacity: 2.5 bushels
Warranty: 2-year limited warranty
Weight: 65 lbs

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Interval	Task
Before each use	Check oil level, inspect blade, clear deck of debris
Every 25 hours	Change engine oil, check air filter, inspect spark plug
Every 50 hours	Replace air filter, sharpen blade, check wheel bolts
Season end	Drain fuel, change oil, clean entire mower, store properly

Note: Always disconnect spark plug before performing maintenance.

Blade Care & Sharpening

A sharp blade ensures clean cuts and healthy grass.

Disconnect spark plug wire.
Tip mower on side (carburetor side up).
Remove blade bolt with wrench (clockwise to loosen).
Sharpen blade with file or grinder, maintaining original angle.
Balance blade; replace if cracked or badly worn.
Reinstall with bolt torqued to 450 in-lbs.

WARNING! Always wear heavy gloves when handling blades. Replace damaged blades immediately.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

Drain fuel tank or add fuel stabilizer.
Run engine until it stops to clear carburetor.
Change oil and clean air filter.
Clean underside of deck thoroughly.
Store in dry, covered area away from moisture.

CAUTION! Never store mower with fuel in tank for more than 30 days without stabilizer.

Safety Information

Always follow safety guidelines to prevent injury.

Wear sturdy shoes, eye protection, and long pants.
Clear mowing area of stones, toys, and other objects.
Never mow wet grass or in poor light conditions.
Keep children and pets away from mowing area.
Never remove safety devices or guards.
Always push mower, never pull.

DANGER! Keep hands and feet away from rotating blade. Disconnect spark plug before any maintenance.

Warranty Information

Ariens provides a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. Keep original receipt as proof of purchase. For warranty service, contact an authorized Ariens dealer or call 1-800-678-5443.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old gas, clogged filter	Add fresh fuel, check fuel line, clean/replace filter
Engine runs poorly	Dirty air filter, old spark plug	Clean/replace air filter, replace spark plug
Uneven cutting	Dull blade, uneven tire pressure	Sharpen/replace blade, adjust cutting height evenly
Excessive vibration	Loose blade, bent blade	Tighten blade bolt, replace bent blade
Bag not filling	Clogged deck, wet grass	Clean underside of deck, mow when grass is dry

Service: For technical support, contact Ariens Customer Service at 1-800-678-5443 or visit www.ariens.com