Echo HCAS-235ES-LW Operator's Manual page 26

Maintenance and care
10-Hour Maintenance
1. Air filter
2. Air cleaner cover
10/15-Hour Maintenance
a: 0.6 - 0.7 mm
15/25-Hour Maintenance
1. Gearcase grease fittings
3. Cleaner cover knob
1. Close choke. Loosen cleaner cover knob and remove air
cleaner cover and air filter.
2. Carefully brush dirt from filter or clean with a nonflammable
solvent if necessary. Dry it completely before installation.
3. Replace air filter and air cleaner cover.
Never operate the unit if the air cleaner assembly is
damaged or missing.
Remove and clean or replace the spark plug
Check plug gap. Correct gap is 0.6 mm to 0.7 mm.
Inspect electrode for wear.
Inspect insulator for oil or other deposits.
Replace plug if needed and tighten to 15 N•m - 17 N•m (150
kgf•cm to 170 kgf•cm).
Gearcase lubrication
Lubricate the cutter assembly gearbox by pumping one or two
strokes of urea-base grease into the grease fitting using a le-
ver-type grease gun.
Over lubricating can cause the gearcase to operate
sluggishly and can cause grease to leak out.
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CAUTION
CAUTION