McCulloch recommended 40:1 using their oil, 20:1 all other oils. I use 32:1 with good quality 2-stroke oil, has worked fine for years.
If using an oil other than McCulloch, the ratio is 40:1. Brand Specific McCulloch two cycle oil is 20:1.
16:1
The full ratio according to the embossed diagram on my Mac Cat 435 fuel cap is 40:1. Hope this helps.
If using an oil other than McCulloch, the ratio is 40:1. Brand Specific McCulloch two cycle oil is 20:1.
50:1 is incorrect. That mixture will not allow enough compression and the unit will be very hard to start, if at all. That mixture works well for Sthil products. If using an oil other than McCulloch, the ratio is 40:1. Brand specific McCulloch two cycle oil is 20:1.
mine says 40:1 on the gas cap, and its the origanal cap. hope this helps.
40:1 with high quality 2-stroke oil mix would be fine. http://store.chainsawr.com/
Mac 310 fuel/oil ratio is 40:1
When came out it called for 16:1, but with todays fuels 32:1 mix of a good quality oil will suffice. Most 50:1 oils should work but get a name brand
I have model number 60003816 and I run 3oz of oil to 1 galion of gas. Works good but I'm not positive that's what is recommended. The manual for that chainsaw requires a 20:1 mixture of non-McCulloch two-cycle oil. That is 6.4 oz. per gallon of unleaded gasoline regardless of what it says on the oil container.
Hi, Back when it was manufactured, it called for 16:1. Gas was different back then also. Mixing at 32:1 with a high quality oil should work fine.
From 1975 when I owned a mac 3 it was fine at 25 to 1 regards