Question about Stihl Models 064, 066, Ms640, Ms660

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What is the fuel oil mixture for stihl ms660 chainsaw

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Hello sir, the gas / oil ratio is, 3/4 o/z per quart or 2.6 o/z per gallon of two cycle oil, any two cycle oil will do,this is how i mix mine and never had a problem,it is a good mix.hope this helps,don't forget the 4 thumbs up,any comments welcome,thank you. ~~

Posted on Feb 23, 2012

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 468 Answers

SOURCE: need to know the oil to gas ratio for a 056 stihl

Stihl chainsaws are 1:50 oil to gas ratio. Make sure you use good high-quality 2-stroke oil, preferably that which is made by Stihl.

Posted on May 22, 2010

  • 14 Answers

SOURCE: Stihl MS 250 16"

take the bar off and give it a good clean, get compressed air and blow it into the oil tank, making a seal around it first

Posted on May 10, 2010

barterjoe
  • 338 Answers

SOURCE: How do I replace the oil pump on a Stihl MS170

The oil pump is pressed in from the bottom. There is a special bolt and bracket to make sure the pump is set to the right depth. Your local dealer should bea able to get the tool for you but it will be cheaper to have the shop do the work.

PS it is more common on this saw to have a dull chain act like it is not getting enough oil than to have a bad oiler.
I am gold certified and have been doing repairs since before the ms series. I have only replaced two oilers in that time.

Good luck
JOE

www.arcolawn.com

Posted on Feb 11, 2011

barterjoe
  • 338 Answers

SOURCE: How to replace oil pump

The oiler is set in place to a depth premeasured and tough to duplicate without the proper tool. If you use a proper sized bolt 5mm about 200mm long. After threading in till it stops mark the depth with a marker. pull the bolt out and the oiler will be on the end of the bolt.

thread the new oiler on and reverse the procedure.

My recommendation is to see a local service dealer like www.arcolawn.com and purchase the speciality tools:
21 Assembly tool 1123 890 2200 Removing oil pump
22 - Puller 1130 893 1400
23 - Installer 1130 893 1500

After saying all that I would tell you that a dull chain is the number one cause of "oiler problems" because a dull chain will over heat and make it seem as if the chain has no oil.

Good luck
Joe

vote this up if it helped.

Posted on Feb 12, 2011

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