TRIMMER

Always observe safety rules when perform-

ing any maintenance.

TIRES

Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber.

Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause

tire damage.

TRIMMER LINE

For best results, replace trimmer lines when they have worn to half their original length. Use .130 inch diameter trimmer

line. Cut new trimmer line length to 16-314 inches. After new line is installed on

trimmer head, check all lines so they do not vary more then one (1) inch in length. This is important to make sure the trimmer head is balanced and will not vibrate abnormally.

_WARNING: Use only the specified trimmer line. Do not use other materials

such as wire, string, rope, etc. Wire can break off during trimming and become a dangerous missile that can cause serious injury.

TO REPLACE TRIMMER LINE

Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug.

Remove worn trimmer line from line carrier plate.

Fold new, cut to length, trimmer line in half and insert folded end through carrier plate opening to back side of retainer clip.

With folded end of line at back side of

retainer clip, pull line outward until line is fully seated under the retainer clip.

Repeat on other side of carrier plate.

Check all lines to be sure they are the same length.

Reconnect spark plug wire to spark plug.

Trimmer line

Carrier plate opening

\ \

Retainer clip

ENGINE

LUBRICATION

Use only high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's SAE viscosity grade according to your expected operating temperature.

SAE VISCOSITY GRADES

NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, these multi-viscosity oils will result in increased oil consumption when used above 32°F. Check your engine oil level more frequently to avoid

possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at least once a year if the lawn mower is not used for 25 hours in

one year.

Check the crankcase oil level before starting the engine and after each five (5) hours of continuous use. Tighten oil plug

securely each time you check the oil level.

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Craftsman 917.77341 owner manual Tires, To Replace Trimmer Line, Engine Lubrication