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My wifes cousin has either a 130 or 140 ,I forgot which . A tad different than the 110-120 or even the mini Mac 6 . Fact it might not even be that number . That contraption has a spring suspension and a wire controlled throttle .I must have wrenched that little POS for week ,all told . I...

A Mini is just a giant little pain in the butt in a small package . The stupid little things have a side mounted carb right directly mounted to a horizontal cylinder . The fuel line runs right up next to cylinder as well and towards the top of it where it gets the hottest . I have spent...

Early on I ran a Mac PM 610 out of fuel constantly and of course the SOB wouldn't start . It took me a while to figure out what was happening .The darned thing was over heating the coil by running it out of fuel hot . I know so because it was sparkless . If I gave it just 30 seconds of idle...

My point of arguement ,really more of an observation is that modern saws are shock mounted . The older rigid mount Homelites ,McCullochs and others had the carb bolted directly to the engine and as such could be prone to problems of hot fuel . More modern Stihls ,Husqvarnas etc have a seperate...

I'm not so sure you can get true vapor lock on a chainsaw . The old Homelites would boil the gas in the tank perhaps but I never saw one lock up . With a modern saw the gas tank is in the back plus the carb is right in the airflow so it stays relatively cool .Besides that a diaphragm carb has...

I'm not saying they don't go bad just seldom on a saw.Why I can't answer .I've got saws I've owned for 30 plus years I've never changed the plug .Fact is never rebuilt the carbs either . An automobile is different .Before HV ignitions and platnum plugs it was about every 10 thou or less because...

I've got some model of little Echo in the shed .It had sat for maybe 10-15 years with the recoil fouled . The little rascal has 1/4" chain on it,looks new . I fixed the recoil ,primed the carb and it fired on a couple of pulls .Cut like crazy maybe 5 minutes ,died .Most likely funkiness from...

A wire brush on a grinder does a good job too . I haven't seen one of those sandblasters for years .Champion used to make one that would test a plug under compression by injecting air into a cylinder .You watched the plug fire through a mirror .

Well I've got a McCulloch too so there .:P Got a Stihl pole saw,does that count ?

I got one,it's a dandy .

Seldom does a spark plug go bad .9 times out of ten saw problems are directly related to the fuel delivery system . If a person is really concerned about the plug ,change it .They only cost about 4-5 bucks tops .

Too lean on the low speed . This is typical of a saw that sits a long time .The low speed jet is the one closest to the cylinder.Turn it counter clockwise about a 1/4 of a turn and see if that helps .