Model 141 husqvarna saw would cut off as soon as i hit the throdle now it will not start
For some reason its running too lean on the mixture, this may be due to a fuel blockage, or it just wants richening up on the mixture screws, start by replacing the fuel filter in the tank, check the fuel hose up to the carb for signs of leaking/cracks or splits, if the carb has standard screws to adjust the mixture, turn each one ( H and L ) out 1/2 turn ( anti clockwise ) on each, if it still does not run any better it may need a carb service. To remove the carb, first remove the two screws securung the air filter, then remove the two 10mm nuts securing the air filter back plate, remove the wire throttle rod, now remove the two cross head screws from the carb back plate into the crankcase, finaly remove the the two 7mm studs securing the carb, remove the fuel hose from the carb elbow ( use a suitable plug to stop fuel sqirting out of the hose a set of forseps works well ) with the carb off remove the single cross head screw in the alloy pump cover, here you will find a gasket and a pump diaphram in that order, there will also be a main fuel screen which will need cleaning or replacment, if the pump diaphram looks aged replace this importent component, now turn the carb over and remove the four screws securing the metering cover, here you will find the metering diaphram and a gasket in that order, replace the diaphram if it looks aged or the metal disc is bent, the metering lever controling the inlet needle should move easily and be set level with the sides of the carb body, if too low just bend it up, if too high bend it down, this is about as much as you can do with the carb without special tools. Whilst the carb is of check the induction rubber, to do this remove the two m4 allen screws holding the carb back plate on, pull the back plate up and out,behind here you will find the induction tube, make sure it has not split, below this tube is the impulse seal check this is seated correctly and not split.
Let us know how you are getting on.
Jan 30, 2011 |
Husqvarna "Chain Saw - 16" Bar, 3 Hp