Why is my Husqvarna 351 flooding when engine not running?
If your Husqvarna Chainsaw is flooding when the engine is not running, it could be due to a worn needle valve, a needle valve set too high, or a needle valve assembly sticking.
Why is the carburettor leaking fuel on my Husqvarna 351 Chainsaw?
If your Husqvarna Chainsaw's 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.
Why does my Husqvarna 351 Chainsaw engine stall when throttle is released?
If your Husqvarna Chainsaw engine stalls when the throttle is released, it might be due to: * Adjusting the L and H screws. * A faulty pump diaphragm. * A needle valve set too high or a needle valve assembly that is sticking. * Faulty diffuser jets.
What to do if my Husqvarna 351 does not accelerate?
If your Husqvarna Chainsaw does not accelerate, consider the following potential issues: * Adjust the L and H screws. * Check for a blocked air filter, fuel tank vent, or fuel filter. * Ensure the fuel line isn't blocked and the fuel hose isn't loose or damaged. * Inspect for a blocked impulse channel. * Examine the carburettor pump side for a loose cover or faulty pump diaphragm. * Look for a leaking air intake hose or loose carburettor mounting bolts. * Verify that the needle valve isn't set too low and the metering system is correctly assembled. * Check for a sticking needle valve assembly, faulty diffuser jets, or a blocked silencer.
Why won't my Husqvarna Chainsaw run at full throttle?
If your Husqvarna Chainsaw won't run at full throttle, it could be due to several reasons: * Adjust the H screw. * A blocked air filter, fuel tank vent, or fuel filter. * A blocked or leaking fuel line or impulse channel. * A loose or damaged fuel hose. * A loose cover on the carburettor pump side, or a faulty pump diaphragm. * A leaking air intake hose or loose carburettor mounting bolts. * A needle valve set too low, a damaged or incorrectly assembled metering system, or a sticking needle valve assembly. * A leaking control diaphragm/cover plate or a blocked silencer.
How to fix Husqvarna Chainsaw that has difficulty starting?
If you're experiencing difficulty starting your Husqvarna Chainsaw, several factors could be the cause. Try the following: * Adjust the L screw. * Check if the air filter is blocked. * Ensure the choke is working correctly. Look for a worn choke pivot or valve. * Inspect the fuel system for a blocked fuel filter or fuel line. * Examine the piston ring for seizing and the impulse channel for blockages.
Why does my Husqvarna 351 have low power?
General| Power output | 2.4 kW |
|---|---|
| Fuel tank volume | 0.5 l |
| Weight | 5.2 kg |
| Oil tank volume | 0.26 liters |
| Chain pitch | 0.325 inches |
| Bar length | 40 cm (16 in) |
Explains manual usage methods.
Describes common faults and likely causes.
Detailed step-by-step repair instructions.
General safety precautions and manual usage guidelines.
Specific hazards related to fuel and safety during operation.
Visual identification of specialized servicing tools.
Engine displacement, cylinder bore, stroke, and max power.
Effective cutting length, chain speed, pitch, and drive link.
Engine speeds, fuel/oil capacities, and oil pump type.
Weight specs and heated hand grips info.
Explains the three sub-systems of the carburettor.
Describes carburettor operation in cold start and idling modes.
Explains carburettor operation at part and full throttle.
Lists common starting issues and their potential causes.
Details problems related to low RPM and uneven idling.
Covers problems with high RPM, acceleration, and stalling.
Points to other sections for component-specific troubleshooting.
Step-by-step guide to remove the chain brake.
Procedures for cleaning and inspecting chain brake parts.
Instructions for reassembling the chain brake.
How to test the chain brake after repair.
Steps to remove and refit the silencer.
Guide on replacing the chain catcher.
Procedure for removing and testing the stop switch.
Cleaning and inspection of stop switch components.
Steps to refit the stop switch.
Procedure for removing the choke control.
Steps for refitting the choke control.
Removal and refitting of throttle lock, trigger, and spring.
Steps to remove and troubleshoot the hand grip heater.
Troubleshooting the generator component.
Measuring resistance for various heaters and generator.
Troubleshooting specific carburettor heater issues.
Steps to remove heater element and rear hand grip.
Steps to refit the hand grip heater.
Procedure for removing the starter assembly.
How to replace a broken or worn starter cord.
Replacing and tensioning the recoil spring.
Steps to refit the starter assembly.
Procedure for testing the ignition module.
Steps to remove the ignition module and flywheel.
Steps to replace the generator.
Steps to refit the generator.
Steps to refit the ignition module and flywheel.
Procedure for removing and inspecting the centrifugal clutch.
Steps to refit the centrifugal clutch.
Steps to remove the oil pump for various models.
Steps to refit the oil pump for various models.
Steps to refit the oil pump for 340, 345 models.
Adjusting the oil pump for specific models.
Steps to remove the carburettor.
Details related to carburettor heaters.
Steps to dismantle the carburettor.
Cleaning and inspection of carburettor components.
Steps to reassemble the carburettor.
How to pressure test the carburettor.
Steps to refit the carburettor.
Continues carburettor refitting steps.
Steps to refit the carburettor heater.
Steps to remove the air intake system.
Cleaning and inspection of air intake system parts.
Steps to refit the air intake system.
How to adjust the carburettor.
Recommended engine speeds and prerequisites.
Procedure for adjusting the low speed jet.
Adjusting idling speed and high speed jet.
Steps to remove the fuel tank.
Cleaning and inspection related to the fuel tank.
How to replace the fuel filter and hose.
How to test the tank vent.
Steps to refit the fuel tank.
Steps to remove the piston and cylinder.
Cleaning and inspection of piston and cylinder parts.
How to pressure test the decompression valve.
Refitting piston and cylinder for specific models.
Refitting piston and cylinder for 340, 345 models.
How to pressure test the cylinder.
Dismantling the crankcase and crankshaft.
Dismantling the complete crankshaft.
Replacing crankshaft bearings and sealing rings.
Reassembly of crankcase and crankshaft.
Replacing crankshaft bearings for specific models.
Reassembling the complete crankshaft.
How to repair damaged threads.
Steps to replace guide bar bolts.
Steps for basic adjustment of EPA II carburetors.
Replacing H-needle or the entire carburetor.
Replacing the L-needle.
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