Background
The Craftsman Walk Behind Mower 917.387221 is a lawn mower designed for residential use. It is powered by a 4.5 horsepower Briggs & Stratton engine with a displacement of 11.5 cu. in. The fuel for this mower is unleaded regular gasoline with an octane minimum of 87. The mower uses 20 oz. of SAE 30 oil above 32°F and SAE 5W-30 below 32°F. The ignition system is a solid state with an air gap of 0.0125 in. The spark plug is a Champion J19LM with a gap of 0.030 in. The valve clearance for both intake and exhaust is between 0.004 - 0.008 in. The blade bolt torque is 35-40 ft-lbs.
The mower has a cutting width of 20 inches, and the cutting height is adjustable between 1 and 3.5 inches in 6 positions. This model includes a mulching blade and plug, which allows the mower to mulch clippings into fine particles that are returned to the lawn for fertilization. For different mowing needs, the mower can also be converted for side discharge operations with the removal of the mulching plug. An operator presence control bar is included as a feature, which must be held down to start and run the mower, preventing accidental starting. This model also includes a rear deflector to prevent debris from being thrown towards the operator.
Technical Specifications
- Model Number: 917.387221
- Product Type: Walk Behind Mower
- Engine: 4.5 horsepower Briggs & Stratton engine with 11.5 cu. in. displacement
- Fuel: 1.5 quarts unleaded regular gasoline, 87 octane minimum
- Oil: 20 oz. SAE 30 oil above 32°F, SAE 5W-30 below 32°F
- Ignition: Solid state ignition with 0.0125 in. air gap
- Spark plug: Champion J19LM, 0.030 in. gap
- Valve clearance (intake/exhaust): 0.004 - 0.008 in.
- Blade bolt torque: 35-40 ft-lbs
- Cutting width: 20 in.
- Cutting height: 1-3.5 in., adjustable in 6 positions
- Mulching capability: Yes, with included mulching blade and plug
Warranty
The Craftsman Walk Behind Mower 917.387221 comes with a 2-year limited warranty. This warranty applies to non-commercial use and covers defects in materials and workmanship. It's important to note, however, that the warranty does not extend to expendable parts that are subject to wear, such as belts, blades, and air filters. The engine warranty is separately covered by Briggs & Stratton. To claim the warranty, the model and serial number of the mower should be provided when making a request at Sears stores and service centers, which are available nationally.