Maintenance And Care - Stihl SR 420 Instruction Manual

Maintenance and Care

The following intervals apply to normal operating conditions only. If your daily work -
ing time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.
Complete machine
Control handle
Air filter
Manual fuel pump (if fitted)
Pickup body in fuel tank
Fuel tank
Carburetor
Spark plug
Cooling inlets
1)
Spark arresting screen in muffler
All accessible screws and nuts (not adjust -
ing screws)
Container with hose
Strainer in container
Metering unit
SR 420
Visual inspection (condition, leaks)
Clean
Check operation
Clean
Replace
Check
2)
Have repaired by servicing dealer
Check
Replace
Clean
Check idle adjustment
Readjust idle
Readjust electrode gap
Replace after every 100 operating hours
Visual inspection
Clean
Check
Clean or replace
Retighten
Visual inspection (condition, leaks)
Clean
Clean or replace
Check
X X
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English
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