Why does my Stihl MS 661 C-M Chainsaw smoke or have a burning smell while cutting?
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Janet ValentineAug 30, 2025
If you notice smoke or a burning smell while cutting with your Stihl Chainsaw, it could be due to several reasons:
* The chain might not be properly sharpened, so sharpen it.
* There might be insufficient chain oil in the tank, so fill it up.
* The chain lubrication system might be supplying insufficient chain oil, so increase the oil feed rate.
* The chain could be over-tensioned, so tension it properly.
* The chainsaw might not be used properly, so have the correct use explained and practice.
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Kaitlyn NormanAug 29, 2025
Why Stihl Chainsaw engine runs roughly, misfires, temporary loss of power?
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greenamandaAug 30, 2025
If your Stihl chainsaw engine runs roughly, misfires, or experiences temporary power loss, check the following: Ensure the spark plug boot is firmly attached; replace if necessary. Clean or replace a sooted or oily spark plug, and check the air filter if sooting recurs. Replace a loose ignition lead. Use the correct fuel/oil mixture, avoiding too much oil. Finally, ensure the air gap between the ignition module/control unit and flywheel is correct.
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Anita SheaAug 28, 2025
Why Stihl Chainsaw engine does not start easily, stalls at idle speed, but operates normally at full throttle?
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Kaitlyn CooperAug 28, 2025
If your Stihl chainsaw engine doesn't start easily, stalls at idle speed, but runs normally at full throttle, it could be due to damaged oil seals in the crankcase, requiring replacement. Alternatively, the crankcase might be leaking or damaged, necessitating sealing or replacement.
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Jordan ColemanAug 27, 2025
What to do if Stihl Chainsaw engine does not deliver full power or runs erratically?
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Shirley BlankenshipAug 27, 2025
If your Stihl chainsaw engine isn't delivering full power or is running erratically, consider these potential causes: worn or broken piston rings, which would need replacing; a carbonized muffler or spark arresting screen, suggesting cleaning or replacement; a dirty air filter, which should be cleaned or replaced; a kinked or torn fuel hose, which requires replacement or repositioning; or a decompression valve that isn't closed, which needs checking and possible replacement.
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Mary DavisAug 26, 2025
What to do if Stihl Chainsaw engine is flooded?
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Scott NewmanAug 27, 2025
If your Stihl Chainsaw's engine doesn't start and you suspect it's flooded, clear the combustion chamber.
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Adam GalvanAug 25, 2025
What to do if my Stihl MS 661 C-M engine does not start?
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hharrisonAug 26, 2025
If your Stihl Chainsaw engine doesn't start, here are a few things to check:
* Make sure you have sufficient fuel in the tank; if not, mix fuel and refuel.
* If the engine is flooded, clear the combustion chamber.
* If the carburetor is too hot, allow the chainsaw to cool down.
* If the carburetor is iced up, allow the saw to warm up to +10°C.
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Jamie WellsAug 25, 2025
Why Stihl MS 661 C-M Chainsaw is losing chain oil?
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Anna HendersonAug 25, 2025
If your Stihl chainsaw is losing chain oil, the oil pump may be damaged or worn, requiring a replacement. Another cause could be a faulty gasket between the two halves of the crankcase, or a crack in the crankcase itself. In this case, replace the gasket and inspect the crankcase halves, replacing them if necessary.
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