Husqvarna 326 E - Trouble Shooting Guide

3
36
Fuel system
Trouble Shooting Guide
Probable causes
Stop screw for the throttle not working    
Fuel tank/hose Fuel  lter blocked       
The fuel hose blocked       
Air in fuel ducts       
Incorrect/poor fuel   
Pump diaphragm Vacuum pulse leakage  
Vacuum pulse duct blocked  
Loose screw(s) on the pump cover   
Faulty pump diaphragm   
Flow bellows Flow bellows damaged 
The needle valve faulty      
Carburettor is not  tted correctly    
Faulty heat insulation seal    
Needle valve’s lever Lever arm damaged     
Lever arm too high    
Lever arm too low 
Lever arm does not work correctly          
Needle valve’s spring The spring is deformed   
The spring is not  tted correctly    
Control diaphragm Diaphragm is damaged      
Faulty seal    
Needle valve Valve jams   
Valve worn       
Foreign object in the valve guide       
Di cult to start Flooding, fuel leakage Di cult to prime when starting Engine does not idle Idles too slowly Idling does not stabilise Stops when idling Engine does not accelerate Engine stops when decelerating Poor acceleration capacity Poor performance at high speed
High
speed
Acceleration/
Deceleration
Low speedStartingSymptom