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Stihl 066 cylinder to crankcase torque - Stihl Garden

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When installing screws into used components, gently rotate the screw backwards until the threads on the bolt go past the threads already in the component, then start to gently turn the screw in the tightening direction. (the reason is: you do not want to cut new threads, as this will damage and remove the current thread material, and the hole will be too big as a result)
Put a small amount of lubricant (oil, thread oil, ect) and proceed to tighten the screw(bolt). 11 ft lbs in this case.

I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae

Posted on Feb 02, 2017

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6 Suggested Answers

Anonymous

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Posted on Jan 02, 2017

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Anonymous

SOURCE: STIHL CHAINSAW MIXTURE SETTINGS

one turn high and low 66 has compesator carby willrun rich up high but will lean under load

Posted on Sep 03, 2008

steve_lima

steve

  • 181 Answers

SOURCE: stihl chainsaw 066 died

mr siegs
remove the muffler and look inside the cumbstion camber and look at the piston.if you see marks (score) on the piston the piston and cylinder are bad and need to be replaced.this is caused from a lack of lubercation to the cylinder,possible water in fuel,spraying starter fluid into the saw,bad oil to fuel mixture,old fuel has no lubercating value.any more questions please feel free to contact me

Posted on Mar 12, 2009

Greg Mills

  • 497 Answers

SOURCE: need torque specs

Lower crank 75 ft-lb Head 105 ft-lb No specific torque on connecting rods. Just dont over crank it. Thanks for using Fixya.com

Posted on Aug 20, 2009

Hollenback

  • 520 Answers

SOURCE: What is the red light

here is a copy from an article i was reading

It features a "red light" on the right hand side above the tuning screws which illuminates at a set RPM to assist in tuning the high speed mixture screw, which is great when using the saw out in the field as no tachometer is required to give the saw a quick tune before commencing work. It allows peace of mind knowing that your saw is always tuned correctly and not running a lean mixture which causes damage very quickly. Incorporated with this "red light" system is a rev limiter, so even if the saw is tuned incorrectly it will not allow the saw to over-rev due to a lean out condition and blow up the saw!!

Posted on Jan 02, 2011

barterjoe

Joseph Mueller

  • 346 Answers

SOURCE: keep burning up piston on

It sounds like you are running lean. Not a lean oil/gas mix but a lean Air/fuel ratio. This engine runs hot as a high performance engine. any air leaks such as crank seals, manifold gaskets or muffler gaskets can give you too much air for the fuel coming in.

Secondly from the fuel side:
Ethanol (curse it) combines with oils that have no nondispersants making a white chalky poweder in the fuel system causing less fuel to mix with air. any blockage or pin hole leak can cause less fuel to be brought into the engine thus less cooling and lubricating.

Your carburetor and fuel filter need to be serviced and adjusted correctly or they will affect the mix.

When done the engine should run no faster than 13,000 rpm top no load speed.
This engine should idle smoothly at 2,500 with no more than 150 rpm change

if the speed is not as listed above when the rebuild is done you need to go back into the machine.

Call up a shop like www.arcolawn.comto get a EDT8 tach. it is well worth the money.

good luck

Joe

Posted on Feb 12, 2011

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Hello I have a Stihl 066 chainsaw and I am replacing the cylinder what are the torque ratings for the screws?


When installing screws into used components, gently rotate the screw backwards until the threads on the bolt go past the threads already in the component, then start to gently turn the screw in the tightening direction. (the reason is: you do not want to cut new threads, as this will damage and remove the current thread material, and the hole will be too big as a result)
Put a small amount of lubricant (oil, thread oil, ect) and proceed to tighten the screw(bolt).
In this case 11 ft lb. torgue

I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae

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066 stihl, have all screws out but can't split case.


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