560XP hot start

[Alycidon]

Since it came back from the manufacturers 18 months ago ( having seized after a few weeks use) the above has been exemplary. Cold start is choke on , 2 pulls it fires but does not run, choke off it starts and runs first pull. Hot start is just one pull, always.

 

Had some backside ache with hot starts this afternoon, worked ok this morning, but after lunch it did not want to play. Once I did get it running it would not pick up, but when it did eventually decide to pick up away it went but it was hunting a bit when idling.

 

This feels like a fuel issue, fuel is new but the same as I have used for the last few tasks, maybe 4 hours cutting time, and has Huskys own green synth 2 stroke mix at 50-1 as prescribed.

 

I only use a saw for a few weeks a year prepping firewood so its not had a hell of a lot of use. Have not changed the plug.

 

Other than wack it into the local dealer any thoughts ?, crap in fuel maybe but how to blow the fuel system out ?.

 

Thanks for your input.

 

A

[Johny Walker]

is the plug ok

[monkeybusiness]

Give it a couple of pumps of the primer before hot starting.

[Pinkfoot]

Give it a couple of pumps of the primer before hot starting.

And no decomp

 

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[Alycidon]

Use the de comp and about 6 pumps after a refuel but starting hot does not usually want either. Plug would probably be my first port of call but I suspect its fuel starvation.

 

A

[Mark_Skyland]

Does it feel like it has good compression? You could whip the exhaust off and check the state of the piston as what you describe could be low compression which is the worst case scenario.

 

Firstly I would put a new correctly gaped plug in, check the tank breather is leaking fuel. There have been a few different mods to this over the years, the latest being that if the tank breather leaks fuel it doesnt do so into the back of the carb.

 

Clean the outside of the carb with compressed air, there are some magnets and sensors on the throttle linkage which if they pick up a bit of stray metal can screw things up a bit.

 

Otherwise, warm the saw up and cut some timber with it for a couple of minutes on full throttle but under load, that will get the saw re tuning itself.

[Alycidon]

Does it feel like it has good compression? You could whip the exhaust off and check the state of the piston as what you describe could be low compression which is the worst case scenario.

 

Firstly I would put a new correctly gaped plug in, check the tank breather is leaking fuel. There have been a few different mods to this over the years, the latest being that if the tank breather leaks fuel it doesnt do so into the back of the carb.

 

Clean the outside of the carb with compressed air, there are some magnets and sensors on the throttle linkage which if they pick up a bit of stray metal can screw things up a bit.

 

Otherwise, warm the saw up and cut some timber with it for a couple of minutes on full throttle but under load, that will get the saw re tuning itself.

 

 

Tried it this morning cold and it started, picked up and ran perfectly. It gets an air line blow out every day of use so will change plug and blow everything out and see how it goes. Thanks for your input.

 

A

[Alycidon]

Forgot to add outcome.

 

Blew the linkage out with the airline and it has run perfectly since, bought new plugs but have not needed to fit one. Managed to hit a bit of deeply embedded smooth wire though, brand hew Husky chain as well !!, always the way. Tucked in the center of a 400mm log so no chance to see.

 

Thanks for the input,

 

A