Echo HC-1501 Operator's Manual page 22

Maintenance and care
Check fuel system
1. Fuel tank cap
Check spark plug
a: 0.6 - 0.7 mm
Care for cutting blades
Wear gloves to protect hands from sharp blades.
Failure to observe these precautions could lead to injury.
1. Bolt slots
Check before every use.
After refuelling, make sure fuel does not leak or exude from
around fuel pipe, fuel grommet or fuel tank cap.
In case of fuel leakage or exudation there is a danger of fire.
Stop using the machine immediately and request your dealer
to inspect or replace.
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).
CAUTION
Lubricating blades (Every 4 hours of operation)
Apply a few drops of oil the each bolt slots at the bottom of
blades.
Cleaning blades (After each use)
Remove gummy residue from blades with a 50 : 50 mixture of
kerosene (paraffin) and machine oil.
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