High commpression on chain saw

[roofman]

Sorry roofmam but that is really bad advice and specifically how not to start a saw. Sometimes the pull cord snatches back therefore your motion sends the saw bar round hitting your leg quite hard in the best case scenario. Worst case is the saw has started before the pull cord snatches, and if the chain break isn't on sends a spinning chain round into your leg. I know plenty of people who have done the former and got large bruises, fortunately I don't know anyone that has had it start before the snatch.
Chainsaws should be started either with the rear handle between your legs and front handle held with left hand, or right heel on the rear knuckle guard and left hand on front handle with left knee on floor.

Even 90cc saws should be relatively easy to start without hitting the decomp button when started like this.

I hear everything you have said and i agree.. But let's also ask the collective who still drive their car or van with hands on the wheel at a quarter to three and don't allow the wheel to self centre after turns, or runs a grinder without a guard

 

[Turbo]

Friend of mine has a big Stihl saw & unless you are built like a gorilla you will not start it on the ground, bungee start is the only way. It is recognised by stihl & they fitted a decompression valve to some of these models, just not this one!
He was given the saw by his FIL coz he couldn't start it, mate got me to see if I could make it easier to start, no joy so he has just sold it to another mate who is built like a gorilla!

 

[Migmac]

Take the exhaust off and have a look at the piston and bore. Sounds like it’s partially seized or the clutch is knackered

 

[8ob]

There are a few saws here that some of the lads struggle to start, mechanical issues aside its normally its more to do with technique. I have found the easiest way to start the finger snappers is to 1. put the saw on the floor 2. kneel on the on the handle bar and grab the throttle with your left hand 3. gently bring piston to the top of the bore( its a feel thing) 4. then go for it with commitment.
Never fails.

Bob

 

[Agrismith]

I hear everything you have said and i agree.. But let's also ask the collective who still drive their car or van with hands on the wheel at a quarter to three and don't allow the wheel to self centre after turns, or runs a grinder without a guard

Problem is chainsaws are very very bitey and I'm assuming the majority on here aren't wearing proper PPE to begin with.
A grinder without a guard will make a mess but a running chainsaw into your leg is really not good

 

[angellonewolf]

ok had a chance to play today removed the exhaust and use a cheapy camera to look at the bore there was some heat marks on the bottem of the pistion
a few light surface marks on the bore but not realy nothing youed expect for it age removed the plug and wd40 and pulled the pull start a few times and repeated thrown the plug in and used easy start then screwed the exhaust back on and it coughed as i pulled it and seamed to be a bit easyer to pull so used a bit of 2 stroke mix down the carb and it started and ran then when i went to start it later nothing at least i can pull it over now so dont realy know why i can now stuck piston ring ? then looking around thought id have a bar and chain i could nick off another mechimne but when i tryed there very differant so thats a no go any way as the cost of a new bar and chain might aswell buy a working one 2nd hand looked a good saw shame realy

 

[Ed.]

Take the spark plug out and spray the inside of the cylinder with some ether, put spark plug in and another dash into the carby, (it is sold as a spray can in car parts stores) and use a new spark plug as well. Use fresh fuel as that also helps. I have a Husky 372XPG and that can be a mongrel to start some times, it has a decomp button but I find that it doesn't help much but the ether works wonders. I found that if it starts but cuts out quickly then you should check the fuel line in the tank itself, to make sure it hasn't cracked and it might be sucking air instead of fuel same as the fuel primer bulb if it has one.