Stihl 009 User Manual

STIHL 009, 010, 011 23
4.3 Troubleshooting Chart
Ignition system in order.
Look for fault in fuel system and carburetor.
Replace condenser.
Spark test positive?
Fit new flywheel.
Is spark test positive?
Check ignition lead for break with ohmmeter.
If break is detected, replace ignition lead.
Does spark test now produce sparkover?
Does flywheel appear to
be in good condition?
Fit new spark plug.Is air gap correct?
Correct the air gap (0.3 mm).
Is spark test positive?
Insert screwdriver in place of spark plug in spark plug
terminal and hold about 4 mm (1/8“) away from
ground. Sparkover?
Replace faulty ignition lead,
repair contact spring or ignition stop switch.
Poor insulation on ignition lead?
Is ignition stop switch touching contact spring?
Clean spark plug and reset electrode gap.
Does spark test produce powerful spark?
Press terminal firmly onto spark
plug and fit spring if necessary.
Spark plug terminal firmly seated on spark plug?
Remove spark plug.
Is it in good condition?
no
no
no
no
no
yes
no
no yes
no
no
no
no
yes
yes
Check armature and renew if necessary.
Does engine now run after positive spark test?
Check condenser. In order?
Check connections at contact breaker and
inspect breakers points. Renew burnt or pitted
points. Check and correct ignition timing and
magneto edge gap. Does engine now run?
yes
yes
no
yes
no
no

Stihl 009 Specifications

General

Brand	Stihl
Model	009
Category	Chainsaw
Language	English