Background

The Craftsman Trimmer 316.791940 is a gardening tool typically used for trimming grass and small shrubs. It was produced by Ryobi America Corp for Sears under the Craftsman Brand. This trimmer is gas-powered and features an air-cooled, 4-cycle engine with a displacement of 1.8 cu. in. (29cc). It operates at 6,800+ RPM, with an idle speed of 2,800-3,600 RPM. The ignition type is electronic, and it uses a rocker switch.

The Craftsman Trimmer 316.791940 has a lubrication system that uses SAE 30 oil, with a crankcase oil capacity of 3.04 oz. (90ml). The fuel used is unleaded gasoline and it has a diaphragm, all-position carburetor. The trimmer has a muffler with a guard and uses a manual spring return throttle. The fuel tank capacity is 14 oz. (414 ml), and the weight of the trimmer is between 11.5-13 lbs (5.2-5.9 kg) without fuel, line head, and shield. The cutting mechanism uses a head with a spiral line. This trimmer also allows the use of attachments like an edger, cultivator, and blower.

Technical Specifications

  • Model Number: 316.791940
  • Product Type: Gas-powered string trimmer
  • Engine Type: Air-cooled, 4-cycle
  • Engine Displacement: 1.8 cu. in. (29cc)
  • Operating RPM: 6,800+ rpm
  • Idle Speed RPM: 2,800-3,600 rpm
  • Ignition Type: Electronic
  • Ignition Switch: Rocker switch
  • Valve Clearance: 0.003-0.006 in. (0.076-0.152 mm)
  • Spark Plug: Comparable to Champion RDZ19H
  • Spark Plug Gap: 0.025 inch (0.635 mm)
  • Lubrication: SAE 30 oil
  • Crankcase Oil Capacity: 3.04 oz (90 ml)
  • Fuel: Unleaded gasoline
  • Carburetor: Diaphragm, all-position
  • Starter: Auto rewind
  • Muffler: Baffled with guard
  • Throttle: Manual spring return
  • Fuel Tank Capacity: 14 oz (414 ml)
  • Drive Shaft Housing: Steel tube
  • Throttle Control: Finger-tip trigger
  • Weight: 11.5-13 lbs (5.2-5.9 kg) without fuel, line head, and shield
  • Cutting Mechanism: Head with spiral line

Warranty

The Craftsman Trimmer 316.791940 comes with a 2-year limited warranty. This warranty covers any defects in material or workmanship for a period of two years from the date of purchase. It is pertinent to note that the warranty coverage may vary depending on your location, with California models also having a specific 2-year limited warranty for the evaporative emissions system. To claim the warranty, it's usually required to present proof of purchase, such as a receipt, and to contact the manufacturer or the retailer where the product was bought. Be sure to check the specific terms and conditions outlined in the warranty policy for any additional requirements or exceptions.

Craftsman 316.791940 Owners Manual