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I don't have the manual and don't know the gas ratio

I need the gas ratio for a McCulloch 250 chainsaw

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If new it's 50:1 and after 100hr Break in you can use 40:1

If not under warranty most saws and 2-stroke engines work great @ 40:1 ratio

Some Old saws use 32:1 and some as little as 16:1

Stick with a 40 to 1 mix ratio for all newer 2 Cycle stuff you own and you'll be just fine!!!

Posted on Nov 21, 2008

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Fuel ratio for mcculloch chainsaw se 2000


Every modern chainsaw use 2% of chainsaw additive oil with gas. Use oil additive for chainsaw (not for motorcycle) because of less smoke. Its carburetor has rubber membranes for pumping of gas, and always when your last work is finished, use all gas from reservoir to protect that carburetor (if you don't need chainsaw for long times).

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I need the oil gas ratio mix for a McCulloch eagar ****** 2.0 cid chainsaw. Thanks in advance!


McCulloch chainsaws are 40:1 ratio

128 Oz per gallon
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What is the oil/gas mixture ratio for a McCulloch PRO MAC 700 chainsaw?


Perhaps you will find what you need at this URL:
http://www.mymowerparts.com/pdf/McCulloch_Parts_Service_Repair_Manuals/Gas_Powered_Chain_Saws/
At least you will find the manual.
Paul

Sep 18, 2010 | McCulloch Garden

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I need the gas/oil ratio for an old Pro-mac 10-10S


40:1 according to Mike Acres site, same as current recommended mix:
Chain Saw Collectors Corner
http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/8f167f396637c29d88256c2e0073560e?OpenDocument
Oil Mix Ratio:
Dolmar, Echo, Efco, Homelite, Husqvarna, Jonsered, Makita, Oleo-Mac, Red Max, Ryobi, Shindaiwa, Solo, Stihl & Tanaka; all recommend 50:1.
1 gallon of premium fuel to 2.6 ounces of quality 2-cycle oil.
4 liters of premium fuel to 80 milliliters of quality 2-cycle oil.
McCulloch & Poulan; recommend 40:1.
1 gallon of premium fuel to 3.2 ounces of quality 2-cycle oil.
4 liters of premium fuel to 100 milliliters of quality 2-cycle oil.
Chinese chainsaws recommend 25:1.

McCulloch Manuals
Operators Manuals: are much more difficult. I have dialed this number many times (Contact Us - All McCulloch Products 1 (800) 521-8559) and have yet to get a satisfactory response. Please try this! If enough of us try they will fix it! If unsuccessful with McCulloch try here:
Beg for manuals thread (ArboristSite - free to join). Please use the search function first, it has probably been asked and answered.
http://www.arboristsite.com/showthread.php?t=72322

If you have more questions or need additional help please reply below and I will get back to you. Good Luck. HTH
Lou
Thank You for using FixYa.

Apr 26, 2010 | McCulloch Garden

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Gas, Oil Mix ratio for McCulloch Eager ******


Fuel/Oil Mixture
  1. Use a quality 2 cycle oil and mix it to the OIL supplier's recommended ratio. Today I use Stihl 2 cycle oil mixed @ 50:1 in a Pioneer that I purchased new in 1980. There are no gouges or scratches on the piston or cylinder and I have no carbon build up on the piston top. The manual (on stone tablets) recommends 24:1. Over the years the mixture has leaned from 24:1 (Saw Recommendation) to 28:1 (Lawn boy mower recommendation) to 32:1 (Oil provider 8oz/2gal - used for many years) and finally the last 5 (±) years 50:1 (Stihl 2.6oz/1gal)
  2. Most gas in the US of A contains ethanol; not good with chainsaws. Mix what you expect to use within a few months. Anything over 6 months old use up in a 4 cycle engine. HTH
    Lou

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Gas Oil Mixture


Fuel Mix: Add 6 oz. McCulloch custom lubricant or 1 PT. S.A.E. 40 (16:1) to 2 U.S. Gal. Regular Gas

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Trying to determine gas-to-oil ratio on a chain saw.


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Oct 03, 2008 | Garden

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