Troubleshooting
High rpm
Acceleration och retardation
Will not run at Adjust H screw
Does not
accelerate
Adjust L screw
Adjust H screw
Blocked air filter
Blocked fuel tank vent
Blocked fuel filter
full throttle
Blocked air filter
Blocked fuel tank vent
Blocked fuel filter
Fuel line blocked
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 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
Needle valve assembly sticking
Leak in metering system (air or
fuel)
Metering system incorrectly
assembled
8.2 Troubleshooting methods
Loose diaphragm rivet
Hole in diaphragm
Leaking control diaphragm/cover
plate
In addition to the faults described in the above
table, 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 – 55
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna 435, Husqvarna 435e, Husqvarna 440e |
| Model Year | 2003, 2004, 2005, 2006, 2007, 2008 |
| 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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Lawn and Garden readers have rated 2003-2008 Husqvarna 435 435e 440e Chainsaw Workshop Manual 5.0 out of 5.0 based on 3 product reviews. Excellent, just what was needed