Why is my Husqvarna Chainsaw difficult to start?
If your Husqvarna Chainsaw is hard to start, possible solutions include adjusting the L screw, or checking if the air filter, fuel filter, or fuel line are blocked. The choke may not be working, the choke pivot or valve may be worn, the piston ring may be seized, or the impulse channel may be blocked.
Why does my Husqvarna 140 engine stalls when throttle released?
If your Husqvarna Chainsaw engine stalls when you release the throttle, consider these potential causes: You may need to adjust the L screw or the H screw. Other possible causes include a faulty pump diaphragm, a needle valve set too high, a sticking needle valve assembly, or faulty diffuser jets.
Why does my Husqvarna Chainsaw carburettor leaking fuel?
If your Husqvarna Chainsaw carburettor is leaking fuel, it could be due to a loose or faulty fuel pipe, a hole in the diaphragm, a worn needle valve, a needle valve assembly sticking, a needle valve set too high, a leak in the metering system, or a loose cover on the carburettor pump side.
How to fix Husqvarna 140 Chainsaw that will not idle?
If your Husqvarna Chainsaw won't idle, consider these solutions: Adjust the L screw. Check for a leaking air intake hose, loose carburettor mounting bolts, or a loose or faulty fuel hose. Inspect the fuel filter and fuel line for blockages. Also, check the fuel tank vent. Other potential issues include a stiff throttle valve pivot, a sticking throttle pushrod, a defective throttle return spring, a bent throttle stop, or a faulty diffuser jet.
How to troubleshoot low power on my Husqvarna Chainsaw?
If your Husqvarna Chainsaw has low power, try these solutions: Adjust the H screw. Check for blockages in the fuel tank vent or fuel filter. Inspect for a leaking or blocked impulse channel. Also, check for a loose cover on the carburettor pump side, a faulty pump diaphragm, or a blocked air filter. Other potential issues include a sticking needle valve assembly, a leak in the metering system, an incorrectly assembled metering system, a loose diaphragm rivet, a hole in the diaphragm, or a leaking control diaphragm/cover plate.
What causes a Husqvarna Chainsaw to flood when the engine is not running?
If your Husqvarna Chainsaw is flooding when the engine isn't running, it might be due to a worn needle valve, a needle valve set too high, or a needle valve assembly sticking.
What causes idling too rich on Husqvarna 140?
If your Husqvarna Chainsaw is idling too rich, consider these possible causes: Adjust the L screw. Other potential issues include a worn needle valve, a needle valve set too high, a worn needle valve lever, a leaking control diaphragm/cover plate, or a needle valve assembly sticking.
Why is my Husqvarna 140 Chainsaw idling uneven?
If your Husqvarna Chainsaw is idling unevenly, consider these potential causes: a blocked fuel filter, a blocked fuel line, a leaking air intake hose, loose carburettor mounting bolts, a worn throttle valve pivot, a loose throttle valve screw, a worn throttle valve, a sticking needle valve assembly, a leak in the metering system, a worn metering system centre knob, a hole in the diaphragm, a leaking control diaphragm/cover plate, or a crankcase leak.
What causes over rich acceleration in Husqvarna 140 Chainsaw?
If your Husqvarna Chainsaw experiences over rich acceleration, possible causes include the need to adjust the L screw or the H screw, a blocked air filter, a faulty pump diaphragm, or faulty diffuser jets.
Why does the L screw requires constant adjustment on my Husqvarna 140 Chainsaw?
If the L screw on your Husqvarna Chainsaw requires constant adjustment, it could be due to a blocked fuel line, a needle valve set too high, a needle valve assembly sticking, a leak in the metering system, a leaking control diaphragm/cover plate, faulty diffuser jets, or a crankcase leaking.
Overview of the workshop manual's purpose and content.
Essential safety precautions and warnings for repair work and chainsaw use.
Identifies the intended audience for the workshop manual.
Information on how modifications affect service documentation over time.
Specifies the requirement for special tools and lists available service tools.
Explains how to use the workshop manual for repairs.
Describes the referencing system used for components and figures.
Provides general guidelines for workshop safety and manual usage.
Highlights specific warnings and precautions for operating the chainsaw.
Explains symbols found on the chainsaw itself.
Explains warning and instruction symbols used within the manual.
Illustrates and lists special tools required for chainsaw maintenance.
Step-by-step instructions for disassembling the chain brake mechanism.
Procedures for correctly reassembling the chain brake.
Instructions for removing the silencer unit.
Instructions for refitting the silencer unit.
Guide for replacing the chain catcher component.
Steps for dismantling the engine's start/stop control system.
Procedure for testing the stop switch via resistance measurement.
Instructions for reassembling the start/stop control system.
Steps for removing the throttle lock, trigger, and return spring assembly.
Procedures for refitting the throttle lock, trigger, and return spring.
Detailed steps for removing the starter assembly from the chainsaw.
Procedure for replacing a damaged or worn starter cord.
Method for correctly tensioning the recoil spring in the starter.
Instructions for replacing a worn recoil spring.
Steps for refitting the starter assembly.
How to test the ignition module for faults.
Procedures for removing the ignition module and flywheel.
Steps for refitting the ignition module and flywheel.
Instructions for removing the centrifugal clutch.
Procedures for refitting the centrifugal clutch.
Steps for dismantling the oil pump and its screen.
Procedures for assembling the oil pump and its screen.
Instructions for removing the air intake system components.
Procedures for assembling the air intake system.
Comprehensive guide to the chainsaw's carburettor, including design, function, and maintenance.
Instructions for dismantling and venting the fuel tank unit.
Procedure for testing and ensuring proper venting of the fuel tank.
Details on dismantling, cleaning, inspecting, and assembling the vibration damping system.
Steps for replacing the fuel filter.
Instructions for replacing the fuel and return hoses.
Procedures for replacing the air-purge component.
Steps for removing the piston and cylinder assembly.
Procedures for refitting the piston and cylinder assembly.
Method for pressure testing the cylinder for leaks.
Instructions for dismantling the complete crankshaft.
Procedures for replacing the crankshaft bearings.
Steps for reassembling the complete crankshaft.
Guide for repairing damaged threads using a repair kit.
Instructions for replacing the front and rear bar bolts.
Identifies common chainsaw faults and their likely causes.
Outlines additional troubleshooting procedures for specific components.
General| Cylinder Displacement | 40.9 cm³ |
|---|---|
| Weight | 4.4 kg |
| Oil Tank Volume | 0.25 l |
| Bar Length | 14 in |
| Fuel Tank Volume | 0.37 l |
| Chain Pitch | 3/8 inch |
| Chain Gauge | 0.050 inch |
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