Carburetor

Clean/ Replace Spark Plug

Replace the spark plug yearly or every 100 hours of operation,whichever comes first.

CAUTION: Disconnectspark plug wire from

,_ spark plug and keep wire away from spark plug.

Clean area aroundspark plug.

•Remove spark plug form the cylinderhead.

•Replace spark plug if the electrodesare pitted, burnedor porcelain is cracked. For replacement use Champion RC12YC or equivalent.

•Check electrode gap with wire feeler gauge and set gap to 0.76ram (.030 inches), if necessary.

•install a correctlygapped spark plug intothe cylinderhead, tighten securey.

Valve Cover

Breather Tube

Make sure the piston is at Top Dead Cer_ter('rDC)

of its compressionstroke (both valves closed). To get the piston at top dead center, pull on the recoil handle slowly watching the pistontrough the spark plug hole. As you pull on the recoil handle the , piston should move up and down. The piston is put Top Dead Center when it is up as high as it can go.

If you thinkyour carburetor needs adjusting,see your nearest Sears Service Center. Engine performance may be affected at altitudesabove 5000 feet. For operationat higher elevations,contactyour nearest Sears Service Center.

Adjusting Valve Clearance

After the firstfilly (50) hours of operation,you should adjust the valve clearance in the engine.

Important: If you feel uncomfortableaboutdoing this procedure or you don'thave the propertools, please take yourcleaning system in to the nearest service center to have the valve clearance adjusted. This is a very importantstep to insure the longest life for your engine.

To adjustvalve clearance:

•Make sure the engine is at roomtemperature.

•Make sure that the spark plug wire is removed from the spark plug and out of the way.

•Remove the breather tube from the valve cover.

Remove the four s_rews attaching the valve cover with a #2 or 3 phillipsscrewdriver.

in-lb$

Allen Wmnol

LooNn Jam Nut

*Using a 10mm wrench, loosen the rockerarm jam nut. Use an 8ram allen wrench to tum the pivotball stud while checking clearance between the rocker arm and the valve stern with a feeler gauge.

Correct clearance is 0.002-0.004 inch (0.05- 0.1mm). Note: You must hold the rockerarm jam n_ in place as you turn the pivotball stud.

,When valve clearance is correct, hold the pivotball stud in place with the allen wrench and tighten the rocker arm jam nut. Tighten the jam nut to 65-85 inch-poundstorque. After tighteningthe jam nut, recheck valve clearance to make sure ff did not

change.

580.768050 specifications

The Sears 580.768050 is a versatile and efficient sewing machine that has garnered attention for its unique blend of functionality and practicality. Designed for both beginners and seasoned sewers, this model is known for its user-friendly features and reliable performance.

One of the standout characteristics of the Sears 580.768050 is its ease of use. The machine is equipped with an intuitive control panel that allows users to navigate through its various settings with minimal effort. This makes it an ideal choice for those who are just starting their sewing journey, as well as for seasoned crafters looking for a straightforward, efficient tool.

The 580.768050 offers a wide range of stitch options, accommodating a variety of sewing styles and projects. With several built-in stitch patterns, it allows users to explore creative sewing techniques, from basic straight stitches to decorative patterns. This variety empowers users to tackle different projects, such as quilting, garment construction, or home décor items.

In terms of technology, the Sears 580.768050 features an automatic needle threader, a convenience that saves time and frustration. Users no longer need to struggle with threading the needle manually; this feature allows for quick setup and seamless transitions between tasks. Additionally, the machine boasts adjustable stitch length and width, enabling users to customize their sewing projects to meet specific requirements or personal preferences.

Another noteworthy characteristic of the Sears 580.768050 is its sturdy construction. Built to last, the machine is designed to withstand the rigors of regular use while maintaining consistent performance. Its durable exterior not only enhances the machine's longevity but also gives it a professional appearance that appeals to a wide range of sewing enthusiasts.

The machine's portability is another advantage, as it is lightweight and equipped with a convenient carrying handle. This facilitates easy transportation, whether moving it from room to room or taking it to sewing classes or groups.

In summary, the Sears 580.768050 embodies the perfect blend of user-friendly design, diverse functionality, reliable technology, and robust construction. By catering to a wide range of sewing needs, it remains a favored choice among both novice and experienced sewers, proving its worth as a valuable addition to any sewing toolkit.