Troubleshooting
High rpm
Acceleration and retardation
Will not run at Adjust H screw
Does not
Adjust L screw
full throttle
Blocked air filter
accelerate
Adjust H screw
Blocked fuel tank vent
Blocked fuel filter
Fuel line blocked
Blocked air filter
Blocked fuel tank vent
Blocked fuel filter
Loose or damaged fuel hose
Impulse channel leaking
Impulse channel blocked
Loose cover on carburettor pump
side
Fuel line blocked
Loose or damaged fuel hose
Impulse channel blocked
Loose cover on carburettor pump
side
Faulty pump diaphragm
Leaking air intake hose (rubber)
Loose carburettor mounting bolts
Needle valve set too low
Metering system damaged
Metering system incorrectly
assembled
Faulty pump diaphragm
Leaking air intake hose (rubber)
Loose carburettor mounting bolts
Needle valve set too low
Metering system incorrectly
assembled
Needle valve assembly sticking
Faulty diffuser jets
Blocked silencer
Leaking control diaphragm/cover
plate
Needle valve assembly sticking
Blocked silencer
Engine stalls Adjust L screw
when throttle Adjust H screw
released
Faulty pump diaphragm
Low power
Adjust H screw
Blocked fuel tank vent
Blocked fuel filter
Impulse channel leaking
Impulse channel blocked
Loose cover on carburettor pump
side
Faulty pump diaphragm
Blocked air filter
Needle valve assembly sticking
Leak in metering system (air or fuel)
Metering system incorrectly
assembled
Needle valve set too high
Needle valve assembly sticking
Faulty diffuser jets
Adjust L screw
Adjust H screw
Blocked air filter
Faulty pump diaphragm
Faulty diffuser jets
Over rich
acceleration
Loose diaphragm rivet
Hole in diaphragm
Troubleshooting methods
Leaking control diaphragm/cover
plate
In addition to the faults described in the above ta-
ble, trouble shooting can be carried out on specific
components or sub-systems of the chainsaw. The
various procedures are described in the relevant
chapters, see the contents page, as follows:
Will not “four- Blocked fuel tank vent
Blocked fuel filter
stroke”
Fuel line blocked
Loose or damaged fuel hose
Impulse channel leaking
Impulse channel blocked
Loose cover on carburettor pump
side
Faulty pump diaphragm
Leaking air intake hose (rubber)
Loose carburettor mounting bolts
Needle valve set too low
Leak in metering system (air or fuel)
Metering unit incorrectly assembled
Loose diaphragm rivet
Hole in diaphragm
•
•
•
Checking the operation of the chain brake
Measuring the resistance of the stop plate
Pressure testing the carburettor
•
•
Pressure testing the decompression valve
Pressure testing the cylinder
Leaking control diaphragm/cover
plate
English – 12
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna 340, Husqvarna 345, Husqvarna 346XP, Husqvarna 350, Husqvarna 351, Husqvarna 353 |
| Model Year | 2003, 2004, 2005, 2006 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English |
| Product Brand | Husqvarna, Chainsaw |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
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