Stihl ms 660

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Stihl ms 660

By atomicduck , January 9, in Chainsaws. I recently bought a secondhand Stihl MS, fired it up, ran it through a couple of logs and as I finished going through the last one, the idle dropped and shortly stopped all together and was unable to get it started again. I went through a number of checks, cleaned the carb ended up replacing it altogether , checked the fuel line was clear including the fuel filter, air filter looks brand new and clean, spark plug is firing nicely, spark plug gap is spot on, tried a new spark plug altogether as well. Upon doing so, the cylinder looked a little scored and the piston was mostly black so I ordered an aftermarket replacement kit. I then went to try and start it again, this time it wouldn't start. If I pull relatively softly, it will pull as it normally should and I can feel the piston moving. If I give it a harder pull, i. As soon as I press the decompression valve down again, the piston can freely move, until I pull hard again. Does anyone have any ideas at why it is doing this? I took the head off again just to check I had installed everything correctly and to check nothing in fact had broken off inside the engine and it's all fine, piston rings are intact and in position, the little clips holding the piston in place are also intact and in position, the piston arrow is facing the exhaust port, presuming that is correct and nothing looks scored, really bizarre. I really can't figure out what the problem is though and have been trying to get it running for the last few weeks without much luck and wondered if anyone here had experienced a similar thing and new a remedy. Are you sure the 'aftermarket' piston and cylinder are exactly the same as the original many aren't built with the same tolerances? You say the cylinder was lightly scored, it might be repairable? Yeah that's what I wondered, it's almost like the decompression valve closes before the engine has had a chance to fire up.

For a better experience, stihl ms 660, please enable JavaScript in your browser before proceeding. The story was he bought it, used it for one job that more than paid for it but still decided it was too stihl ms 660. I've got 4 more oaks to come down this winter over 2' around, probably do bangkokporn a year that size for the foreseeable future.

Professional chainsaw designed for heavy duty use in extreme conditions. High engine power combined with relatively low weight makes it ideal for use in dense stands and cutting hard wood. Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment. Due to compression pressure, jerky stresses occur when starting internal combustion engines. The damping element in the ElastoStart special starter grip alternately absorbs and releases force according to the compression pattern.

Images from eBay seller Sherman Saw Parts are used with permission. Not all MS s have the same features — it depends on the year of production. Earlier models may not have the exact features that later models do. IntelliCarb Compensating Carburetor: Adjusts the air-to-fuel ratio automatically, ensuring the engine maintains optimal performance even as the air filter becomes clogged, compensating for reduced airflow. Decompression Valve: Aids in starting the chainsaw by reducing the compression in the cylinder, making the pull-start significantly easier. This means less effort is required to start the engine. Fuel and Oil Caps with Retainers: These caps ensure a tight seal to prevent leaks while their retainers keep the caps attached to the chainsaw, preventing loss or misplacement during refueling or maintenance.

Stihl ms 660

With a The MS is well-regarded by users for its high-quality construction, efficient lubrication, and anti-vibration systems, and relatively easy starting compared to other professional-grade chainsaws. However, some users have reported some difficulties with starting in cold weather and a higher maintenance requirement compared to other models. Several versions of the Stihl MS chainsaw are available on the market, each designed for different purposes and tasks. Some of the most common versions include:. It is important to choose the right version of the Stihl MS for your specific needs and tasks. Consult with a knowledgeable dealer or specialist to determine which version will best meet your requirements. Some common compliments include:. Overall, the STIHL MS is generally well-regarded by users, especially professional users, who appreciate its strength and power for demanding jobs.

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That doesn't sound like the action of somebody who knows about chainsaws. ChrisNewport Posted January 9, Steve Bullman. Multi-function tool Practical, multi-function quality tool in a sturdy plastic case. P7M8 Active member. Its a big saw so be alert and focused, even with my many years of exp I still tend to grab a pair of chaps with this one. New posts. Post reply. Are you sure the 'aftermarket' piston and cylinder are exactly the same as the original many aren't built with the same tolerances? Consequently i still have the piston and cylinder and out of pocket for that and at least two house labour Bought an years ago that was pretty beat, but was of the golden age of 7. It won't start with a wet plug so take the plug out, turn saw upside down and pull starter a few times to clear fuel, reinstall dry plug and start. Click to expand

Professional chainsaw designed for heavy duty use in extreme conditions. High engine power combined with relatively low weight makes it ideal for use in dense stands and cutting hard wood.

The Alliance. Recommended Posts. I then went to try and start it again, this time it wouldn't start. JavaScript is disabled. Hi all, Thank you all so much for taking the time to reply. Blimey that piston is scrap.. I agree in general with the comments made so far. For a better experience, please enable JavaScript in your browser before proceeding. That the ABC rental was an authorized Stihl dealer meant there was zero chance it was stolen. Thanks to carburettor preheating, you can work reliably with your chainsaw even in winter. No ads, no large blocks of text, just highlights for easy digest It's all totally free! Engage and disengage chain break. I did try honing the original cylinder, placed it back on but had no luck there. Forums New posts Search forums Terms and Rules.