Stihl 180 problem

[MattyF]

i would say at a very long guess wrong or no mix or a serious factory fault!

[raker]

I`ve got one of these and find that every now and again it floods badly. Dont know why it does it, but with the plug removed and turned upside down, a shedload of mix comes out.

I just let it drain, heat the plug with a lighter, reassemble, and its off like a top.It will be fine again for a while.

Its only my light pruning saw, so i dont worry too much about it, and have had it apart to fix an oiling problem. Nothing showed up.

Is the plug really wet after only a few pulls?

Might be the tank vent not working too well leaving a vacuum,allowing an amount of fuel to be drawn up when left standing.

Edited July 14, 2010 by raker

[High Scale]

I reckon he's cooked the rings.

[Rob D]

Yes sounds like he's scored the piston... As above get him to take the exhaust off and get a picture of what the piston looks like in the up position.

 

My mate had an MS180 that went on for about 3 years and he did everything with it... I bought one and scored the pistons after 2 weeks doing chainsaw carving...

 

My mates one was the older model ...

[High Scale]

Old plug looked fine, grey if anything.

 

Even he wouldn't have oiled the wrong end!

 

I wouldn't know a damaged piston if I saw one!

 

I know it's only a hobby saw, but 1 hours use!

 

Maybe I'll get him an 88 next birthday. With a 12" bar...

 

This is what piston damage looks like, Homelite that was given to me to sort out, now in the bin and a damaged piston from a 441.

[orang-utan]

Hi Mark

 

Did you ever sort the problem out with your father in laws MS180 because I also have a problem starting mine? Mine is very temperamental and pretty unreliable. I have only had it a couple of years and it has spent alot of this time out of action.

 

Did you check the piston as suggested by one of the other members?

[urbanforestry]

hi mate sounds like u need to strip the carb down wash with 2 stoke petrol put back together , most problems of this sort are caused though dirty petrol, failin that check all the fuel pipes for cracks and failing that stick a tea spoon of 2 stoke fuel staright down the carb in to the piston should fire at least once if it dont start then dunno m8 sound like u need profesional help i.e dealer hope this helps pete

[Mark Bolam]

Not a lot of help, but the Stihl dealer in France binned the saw.

 

I'm sure the problem was caused by dodgy mix.

 

I am totally anal about my mix, and all my saws have given me years of abuse, sorry, service.

[raker]

Must be scored then. Its a bit of a `throwaway`saw, from the bottom end of the range with a clamshell design motor that doesnt lend itself to rebuilds that well.

[Mark Bolam]

Indeed.

 

I think it has been 'thrownaway'!