husqvarna 350 spewing fuel out of intake when runniNG

[spudulike]

It looks like your H screw is wound a fair bit out. Wind it in until LIGHTLY seated and unwind 1.5 turns and try again. 1 turn is usual but am building in a bit of safety until the saw is running better.

The H screw is the one on the carb furthest from the engine! 

[peatff]

It's called stand off or intake reversion, open the exhaust up a bit with a drill and put the air filter back on

[dumper]

1 hour ago, spudulike said:

Have you had a few? I have and it still makes no sense

Then drink some more!

[adw]

Does  the machine have the spark arrester muffler? If so is it blocked?

[spudulike]

Just now, adw said:

Does  the machine have the spark arrester muffler? If so is it blocked?

Not a bad call if it is the muffler with the spark arrestor!

[cameroncrofter]

17 minutes ago, adw said:

Does  the machine have the spark arrester muffler? If so is it blocked?

have also taken muffler off and cleann around gasket and new gaskets will try making an wider opening in morning 

[adw]

It just does not sound right, if not blocked muffler the possibly ignition timing ( sheared flywheel key )?

[cameroncrofter]

Tried adjust carb screws no luck just revs real high and back fires just attaching a video of what fly wheel looks like 

I do have a newish second hand fly I can put on and test 

[spudulike]

The back fire suggests the ignition timing is incorrect and that the flywheel has spun round on the crank and sheared the key but generally it wouldn't run when this happens. 

It is however, worth pulling the flywheel off and checking the flywheel, especially if you can do that sort of work.

The over revving - in your first video, the saw sounded pretty strangled and no sign of it over revving, when does this happen and if you turn the H screw anti clockwise, does it stop over revving?

Over revving is generally caused by an air leak or an incorrect setting on the H screw....just so you know.

The 350 is prone to leaking air between the lower engineering plastic cradle and the upper crankcase. This wouldn't cause the fuel to come out of the inlet but would cause over revving.

Strange you have over fuelling and over revving together as too much fuel means lower revs as can be seen in the first vid.

[cameroncrofter]

3 minutes ago, spudulike said:

The back fire suggests the ignition timing is incorrect and that the flywheel has spun round on the crank and sheared the key but generally it wouldn't run when this happens. 

It is however, worth pulling the flywheel off and checking the flywheel, especially if you can do that sort of work.

The over revving - in your first video, the saw sounded pretty strangled and no sign of it over revving, when does this happen and if you turn the H screw anti clockwise, does it stop over revving?

Over revving is generally caused by an air leak or an incorrect setting on the H screw....just so you know.

The 350 is prone to leaking air between the lower engineering plastic cradle and the upper crankcase. This wouldn't cause the fuel to come out of the inlet but would cause over revving.

Strange you have over fuelling and over revving together as too much fuel means lower revs as can be seen in the first vid.

Put new flywheel on and still no luck not as much fuel now but still over reving