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Chain Saw Collectors Vintage chainsaws and other air cooled gas engine saws, collecting and restoring.

Chain Saw Collectors

Two cycle gas mixture?


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  #1  
Old 01-15-2010, 04:56:12 PM
windyfarmer windyfarmer is offline
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Default Two cycle gas mixture?

what is the correct gas mix for my mc culloch m60

thank you
windyfarmer
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Old 01-15-2010, 09:11:36 PM
K D Redd K D Redd is offline
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Default Re: Two cycle gas mixture?

How old is your saw? I have a couple of older Mac. Trimmers. They use a 40 to one mix.

Kent
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Old 01-16-2010, 10:57:29 AM
windyfarmer windyfarmer is offline
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Default Re: Two cycle gas mixture?

kent

i dont know m#600116b s#11-014538216176-02
may be you can help?

harvey
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Old 01-16-2010, 01:42:29 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: Two cycle gas mixture?

I'd use a 16-1 mixture to start with until I found information to indicate otherwise. The Pro Mac 60 shows 20 - 1 but I don't know how close that is to your saw.

Bill
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Old 03-13-2019, 08:05:40 PM
Robrep Robrep is offline
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Default Re: Two cycle gas mixture?

i think it is 20 to 1 with 30 wt oil, with new oils it is different. either way too much oil is better then too little. I have a Mac BP1 with the same question someone replied 32 to 1 with the newer 2 cycle oils. Ive seen this same ratio for older outboard motors.
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Old 03-13-2019, 10:33:32 PM
JoeCB JoeCB is offline
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Default Re: Two cycle gas mixture?

Us old outboard motor guys say …. "OIL is cheap , PARTS expensive"

Joe
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Old 03-14-2019, 02:20:15 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Two cycle gas mixture?

If the saw is early 1960s or older, I would not use modern lubes in it. Use either SAE 30 non-detergent or TCW-3 OIL only. The newer cut lubes will starve the older slower engines for lubrication. i am sure your saw is not a 22,000 RPM screamer like they make nowdays! Not much difference between 16 and 20:1 ratios, you just have to clean out the exhaust ports and mufflers more often.
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