The Ariens 915241 is a high-performance walk-behind lawn mower featuring a powerful engine, durable steel deck, adjustable cutting heights, easy-start system, ergonomic handle with controls, large rear wheels for traction, and a versatile mulching/bagging/side-discharge system. Designed for residential use with reliable performance and user-friendly operation. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.
Key components: Steel cutting deck, Briggs & Stratton engine, height adjustment lever, ergonomic handle with control cables, rear bagger attachment, mulching plug, and large pneumatic wheels.
| Feature | Description |
|---|---|
| Engine | Briggs & Stratton 140cc OHV engine with easy-start system |
| Cutting Width | 21-inch steel deck for efficient mowing |
| Cutting Height | 6-position adjustment (1.5" to 4") |
| Drive System | Self-propelled rear-wheel drive with variable speed |
| Grass Handling | Mulch, bag, or side-discharge capabilities |
| Wheels | Large 10-inch rear wheels for better traction |
| Handle | Foldable, ergonomic design with padded grip |
| Fuel Tank | 1-quart capacity for extended runtime |
| Starter | Recoil pull-start mechanism |
| Safety Features | Blade brake clutch (BBC) system, operator presence control |
Unpack and inspect all parts. Assembly requires basic tools (included).
WARNING! Keep hands and feet clear of cutting blade during assembly. Ensure all fasteners are tight.
Before starting, perform pre-operation checks: oil level, fuel, clear deck of debris.
CAUTION! Always operate in clear daylight conditions. Keep bystanders away.
The mower features a 21-inch steel deck with a high-lift blade for superior mulching and bagging performance.
Mulching: Install mulching plug to recut clippings into fine particles that nourish the lawn.
Bagging: Attach rear bag for clean collection; empty when bag is 2/3 full for optimal airflow.
Side Discharge: Remove plug/chute cover for discharging clippings to the side (use in tall/wet grass).
Blade Care: Keep blade sharp and balanced; replace if bent or damaged. Always disconnect spark plug before servicing blade.
Regular maintenance ensures long life and reliable performance.
| Interval | Task |
|---|---|
| Before each use | Check oil level, inspect blade for damage, clear deck of debris |
| Every 25 hours | Change engine oil, check air filter, inspect spark plug |
| Every season | Sharpen or replace blade, lubricate wheel axles and height adjuster |
| Every 100 hours | Replace air filter, check drive belt tension, clean under deck |
| As needed | Check tire pressure (12-15 PSI), tighten fasteners, replace fuel if stale |
Tip: Use only Ariens-approved parts for replacements.
Proper storage prevents fuel system issues and corrosion.
WARNING! Never store mower with fuel in tank indoors or near open flame.
Always follow safety rules to prevent injury.
Ariens provides a limited warranty for residential use: 3 years on deck, 2 years on engine, 1 year on other components. Proof of purchase required. Warranty does not cover normal wear, misuse, or improper maintenance. For warranty service, contact an authorized Ariens dealer or call 1-800-678-5443. Register your product online at www.ariens.com.
Refer to the exploded-view diagram (included with manual) for part numbers and assembly reference. Common replacement parts:
Note: Always use genuine Ariens parts for optimal performance and warranty compliance.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | No fuel, stale fuel, clogged air filter, bad spark plug | Check fuel level; replace fuel if old; clean/replace air filter; check spark plug gap/replace. |
| Poor cutting performance | Dull blade, low engine speed, wet grass | Sharpen or replace blade; set throttle to FAST; mow when grass is dry. |
| Mower vibrates excessively | Unbalanced or bent blade, loose fasteners | Inspect blade for damage; tighten all bolts and nuts. |
| Self-propel not working | Drive belt worn or off pulley, control cable loose | Check belt tension and routing; adjust drive control cable. |
| Grass clumps under deck | Wet grass, deck clogged, mowing too low | Clean deck; raise cutting height; mow when dry. |
| Engine runs rough or stalls | Dirty carburetor, old fuel, clogged fuel filter | Drain fuel tank; clean carburetor; replace fuel filter. |
Service: For technical support, contact Ariens Customer Service at 1-800-678-5443 or visit www.ariens.com.