I buy the home owner saw for 189.00 MS180 for wood carving because its light and cheap. I use it for about 3-4 years and toss it aside and buy a new one. I can't even begin to think of the amount of hours I put on a saw in one year. My bigger saws tend not to get used as much because they are heavier and I only need them for bigger cuts. Yet again I buy the basic home owner version MS250. The MS250 will last me a good 8 years easily. I always use a premium grade fuel (may contain ethanol) and a top quality synthetic 2 stroke mix.
Also as mentioned above keeping your fuel filter screen is very important, that goes with any brand saw or power equipment, things like a dirty air filter, or fuel screen is the users fault and I have never faulted a saw for things like that.
Since you know I love Stihl saws and many reason why there are some things I can gripe about. one thing is the small passage way for the saw dust to exit, making cut with the grain always clogs up. Another is the small oil ports that lube your chain, these are located in the bar (tiny holes) and have to be cleaned out often. the oil injection system itself is very nice its the holes are to small and work well while clean but after they clog they drip oil down the side of the bar not though it like it should. The last and most problematic thing I have found are the exhaust spark arrester screens get clogged and robs all the power and rpms to your engine.
I have found some simple fixes for these. For the small saw dust passage way I put a paddle bore bit to the side case cover and put two holes right around the sprocket area , removing a little of the material make it harder for the saw dust to get clogged up and also gives you an access port to push it out of if it does clog. Also allows you to see in there. I'll post a pict later if anyone is interested in this.
For the bar ....I just drill a slightly bigger hole before putting any new bar on.
The spark arrester ..... I toss the screen and pry open the front of the exhaust ports with a screw driver.
Be easy on the primer bulb, don't push it like your trying to pump it up , just a few light slow pushes are all you need. This goes with anything with a primer bulb. I only stated this because I see a lot of people pump them and not just lightly push a few times.
I started running the ES series bars. My 361 and 041 Super can really put some oil through those. They have larger and also angled oil ports which I feel work much better over the E bars. Theyre more expensive but are worth it to me. Make my chains last longer and my bars wear less. You didn't mention what bars you used. If your using honeowner saws, im gonna guess and say your using the E series bars? Figured I'd ad some food for though there.
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