-10 minutes and it died. i tried starting it again and took real long time and when it did start it didnt idle but died again. i took to repair shop and they said it was a scorched piston and cylinder. i paid $ 470 to get the piston and cylinder replaced. i was told by repairman to warm saw for about a minute before i go full throttle. i used the saw for about 3 tankfuls and the same thing happened again. i took back to repair shop and they said same thing happened and they are repairing it for free this time on the warranty. i use 89 octane fresh gasoline with ethanol, 50:1 oil mixture, and add fuel stabilizer. i was using echo synthetic blend oil and was told to use stihl high performance oil which i now do. what am i doing wrong? why is only one side of piston being scorched?
Garden

Experienced gardeners share their insights in answering this question :
They will score one side of the piston because of the heat.Its always on the exuast side.It could be the carb is adjusted to lean that makes it run hot.The muffler might need a good cleaning too?If it gets plugged up it will run hot too?It sounds like you gas and oil are mixed right.Thats about the only thing that will do it besides straight gas run in it.Could be the shop tec doesen’t know how to adjust the carb?I would ask the to make sure its adjusted right.And not to lean.If its any kind of shop someone there should know how to do it right.When you get it back try running it wide open it should do whats called 4 stroke when not cutting wood then smoothe out while cutting.If you hold it about wide open and it runs fine.Its not right.If it does you need to open the high side of the carb a little.Maby a 1/4 turn at most.Just untill its getting to much gas to run smoothe.I hope they fix it right this time.Thats a very nice saw!

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

What Causes Chain Saw Kickback? There are two circumstances that can cause kickback when using a chain saw. The first occurs when the moving chain at the tip or the nose of the guide bar strikes an object. The second situation is when the wood closes in, pinching the saw chain in the middle of the cut.
If your STIHL chainsaw is going to have a problem, it`s likely to be with a worn carburetor, bad spark plugs, loose fuel hoses, or clogged fuel lines. You should also inspect the fuel intake system and ensure that there are no compression issues.
If the chainsaw won`t start, or starts and then stops and you find the spark plug wet with fuel mixture, it means that the engine is flooded (you will probably smell petrol). It happens when too much fuel enters the combustion chamber, possibly because you have pressed the primer many times.
Many chainsaw models can be started in what is known as `half-throttle` position. In this position, the chain can rotate – if the chain brake is not activated. There are two safe positions to start your chainsaw: on the ground, or with the saw between your legs.
The ignition coil is the device that sends voltage to the spark plug, creating a spark that ignites the fuel and turns on the chainsaw. If the engine is not turning on, then the coil may have become defective, which can happen over time with repeated use.
The carburetor might be clogged. A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall.
There are three main reasons for a chain to come off: Incorrect bar and/or chain for the saw; check to be sure that you are using the proper chain pitch, gauge and number of drive links to match the guide bar. Chain not properly tensioned; It is normal for a new chain to stretch and require frequent adjustment.
Kickback, the result of a mechanical fault in a cylinder of an engine which fires before the piston reaches the top. The piston then goes backward while the other pistons in the other cylinders are still going upwards.

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I bought a stihl ms 660 chainsaw used with a 32 inch bar and chain. i ran it before i bought it and was good. then i started using it maybe 5-10 minutes and it died. i tried starting it again and took real long time and when it did start it didnt idle but died again. i took to repair shop and they said it was a scorched piston and cylinder. i paid $ 470 to get the piston and cylinder replaced. i was told by repairman to warm saw for about a minute before i go full throttle. i used the saw for about 3 tankfuls and the same thing happened again. i took back to repair shop and they said same thing happened and they are repairing it for free this time on the warranty. i use 89 octane fresh gasoline with ethanol, 50:1 oil mixture, and add fuel stabilizer. i was using echo synthetic blend oil and was told to use stihl high performance oil which i now do. what am i doing wrong? why is only one side of piston being scorched?
ANSWER : They will score one side of the piston because of the heat.Its always on the exuast side.It could be the carb is adjusted to lean that makes it run hot.The muffler might need a good cleaning too?If it gets plugged up it will run hot too?It sounds like you gas and oil are mixed right.Thats about the only thing that will do it besides straight gas run in it.Could be the shop tec doesen’t know how to adjust the carb?I would ask the to make sure its adjusted right.And not to lean.If its any kind of shop someone there should know how to do it right.When you get it back try running it wide open it should do whats called 4 stroke when not cutting wood then smoothe out while cutting.If you hold it about wide open and it runs fine.Its not right.If it does you need to open the high side of the carb a little.Maby a 1/4 turn at most.Just untill its getting to much gas to run smoothe.I hope they fix it right this time.Thats a very nice saw!

Read Full Q/A … : Garden

My 290 isn’t oiling chain. I tried adjusting oil flow and still no oil?
ANSWER : You have to remove the bar and clean it out

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Have a craftsman 16″ chain saw 358.360260. Could not initially get it started after it had sat for a couple years with fuel stabilizer in it. When I went to use it the fuel had all evaporated and the fuel pick line was rotted. I replaced that with some difficulty but finally got it on. Saw still wouldn’t start. Replaced the fuel filter. Still wouldn’t start. Pulled the carb apart and cleaned and recleaned everything. Diaphragms were good and I didn’t adjust any of the mixture screws because as I said it ran fine before storage. Non of the carb passages were clogged. Fresh gas 40:1, good spark plug and good spark. Airfilter is good. Engine has maybe about 4 hours of total run time on it. It’s a ZAMA (?) carb. It will run for about 30 seconds when I manually prime it by pouring a small amount of fuel directly though the carb. When I was disassembling the carb the vent hose that goes back into the fuel tank seemed to have a small out of ?substance? in it which I cleaned out. It was right at the end the of the hose that goes back into the fuel tank and not up by the carb. It didn’t appear to be like your typical gummy deposits/varnish though. I hope it wasn?t some type of spongy check valve stuff that is supposed to be in there. That might explain some of my problems. Anyway, I also can not seem to get the primer bulb to fill. When I open the fuel tank, look in side and depress the primer bulb, air bubbles come out of the fuel filter. But when I let the bulb reexpand there’s no fuel that gets sucked up the hose. I can however seem to fill the primer bulb when the fuel tank is full and the chainsaw is laying on it?s pull cord side and the bulb is depressed a bunch of times. The saw will also start and run again for about 15 seconds then die. It’s definitely not getting/fuel and probably running out . Thanks.
ANSWER :

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Ms 170 leaks bar chain oil out bottom, no oil on chain
ANSWER : Your clutch drum bearing has gone bad, letting the clutch drum to move around and cut into the oiler behind it, so now it just pumps the oil out that hole. You have to get that fixed to use the saw, otherwise you’re going to cause catastrophic damage to the saw very soon.

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Saw will start but dies when rev – Stihl 16" Chainsaw Bar Chain Saw 018 025 Ms 180 250
ANSWER : Check the pick up fuel line in the gas tank. If there is a fuel filter at the end of the line,remove and clean or replace. Use a small fexible wire to hook line and pull out thru gas tank opening.

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How do I repair the oiler on my stihl chain saw model 028
ANSWER : You have to remove the little white gear to be able to get to the screws to remove it.

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Fuel,gas oil mixture – Echo 30.1CC Chainsaw With a 14 In.bar and Chain
ANSWER : The fuel/oil should be in the ratio 50 to 1

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How to start stihl ms 180 c – Stihl 16" Chainsaw Bar Chain Saw 018 025 Ms 180 250
ANSWER : Pull choke full on pump petrol 5 to10 times it should try to start take throtle of full to next button and try again

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