Husqvarna LE475 Maintaining Your Edger-Trimmer, Maintenance Checklist, Spark Plug, Blade Change

MAINTAINING YOUR EDGER-TRIMMER

CAUTION To minimize the chance of injury, perform all maintenanceandadjustmentsonyouredger- trimmer with engine o￿, unless instructed otherwise in this section. Use extreme care when working near operating machinery. Do not wear loose ￿tting clothing. Remove watch and jewelry before beginning work andobservecommonsafetypracticeswhen using tools.

MAINTENANCE CHECKLIST

1.Refer to the engine manual for engine main- tenance instructions.

2.Correct grade of oil and gasoline is included in the instructions.

Check the oil level of the engine every time the edger-trimmer is used. An improper oil level can cause extensive internal damage to engine.

Failure to change engine oil at recommended intervals can lead to serious damage to engine. This is especially true when using detergent oils which are designed to hold impurities in suspension; when saturation point is reached, oil may suddenly break down to form a gelatin- like substance which seriously impairs and can even stop ￿ow of oil. Increase frequency of oil changes if edger-trimmer is operated under extremely dusty conditions.

SPARK PLUG

Engine mis￿re, or generally poor operation, is often caused by spark plug in poor condition or with incorrect spark gap setting. Spark plug should be checked after each ￿fty hours of operation. Replace a spark plug at one hundred operating hour intervals, or sooner if inspection reveals fouling or excessive deterioration.

Always clean area around spark plug before removing it to prevent dirt from entering engine. Use a spark wrench to remove and install plug.

Check condition of plug. Good operating conditions are indicated by a light coating of grey or tan deposit. A dead white, blistered coating could indicate an "overrich" fuel mixture caused by a clogged air cleaner, or improper carburetor adjustment.

Replace spark plug that is not in good condition. Never sand blast, wire brush, scrape, or reinstall spark plug in poor condition. Best results are obtained with a new plug.

Always check spark plug gap before installing a new plug or reinstalling the original plug. Use a spark plug gap gauge to adjust the electrode air gap as indicated in the engine manual.

BLADE MAINTENANCE

	CAUTION
Sharp edges of edger-trimmer blade can cut
you during blade maintenance or adjust-
ment. Use suitable covering over cutting
edges of blade to prevent bodily harm.
BLADE CHANGE
1.	Place a 5/16" Allen wrench on the inside of
	cutterhead shaft and a 3/4" wrench on the
	blade nut, and turn to loosen nut. Remove
2.	outer washer and old blade.
	Replace blade with only Husqvarna blade
	(available in 3-pack). Place outer washer the
	same direction as removed, and tighten nut
	as snug as possible.
LUBRICATION (See Fig. 5)
1.	Thecutterheadbodyneedsoccasionalgreas-
2.	ing. Use #2 multi-purpose grease.
	The cutterhead mandrel has two precision-
	sealed bearings that do not need lubrication.
	USE #2 MULTI-PURPOSE GREASE
	Grease Fitting Location

20 ° 10 °

VERTICAL

10 ° 20 °

BLADE ANGLE

HORIZONTAL

Fig. 5

Oil all exposed bearings, linkage, and front wheels. Check all nuts and bolts for tightness.

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