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Harry Ferguson Tractors Discussion Forum

MF 175

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06-13-2020 18:52:48

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Hi all. I have a MF 175 gas with the Perkins engine. It runs extremely rough and backfires. I have replaced recently the carb, points, plugs, condenser, cap, rotor, and coil. I believe it needs timed correctly, but for the life of me, I cant figure out how to do it. I have a timing light, but where are the timing marks and the pointer, such as old cars have, so I can adjust it?

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06-13-2020 21:22:53

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 Re: MF 175 in reply to Kdf101, 06-13-2020 18:52:48  
thanks. Im fairly certain the wires are in the correct order. I have checked the points and I think they are set right, but I plan on checking again. I also suspect the timing port is around the flywheel area, but danger if I can find it.

I also suspect I put this question in the wrong sub forum!

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06-14-2020 05:46:52

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 Re: MF 175 in reply to Kdf101, 06-13-2020 21:22:53  
Well Massey came along a bit further down the road in history. This is the original Ferguson Forum before Massey showed up. Historically, from what I have seen, you have to stand on your head to find the timing marks and usually in a small hole or behind a cover.
You could visit the "Massey Ferguson" Board and post your question there. You might get a far superior answer.
Best of luck!


About Massey Ferguson Tractors
Massey-Harris: After purchasing the J.I. Case Plow Works in 1928, well known for their production of the Wallis tractor, they were thrust into the tractor business. They introduced the 12-20 model traactor in 1929. This tractor was the basis for the "Pacemaker" which was first produced in 1936. The "Challenger" was their first row-crop tractor. Both models were available on steel or with rubber tires.
Massey-Harris continued to produce a popular line of tractors in several different models. Massey-Harris merged with Harry Ferguson in 1953 to form the "Massey-Ferguson" company.

Massey Ferguson: In 1953 Massey-Harris and Harry Ferguson merged to form Massey-Harris-Ferguson Limited. Later this was changed to "Massey-
Ferguson". In 1958 the company acquired F. Perkins Ltd of England who was the leading diesel engine producer at that time. This gave the MF company a ready source for diesel engines.

The MF-35 was first built in 1960 and was available in a gas or diesel version. Follow-on tractors were the MF-50, MF65 and MF-85. Massey-
Ferguson went on to make many models of popular tractors and continues today. The Massey-Harris company was formed in 1891. It was the combination of Massey Manufacturing Company of Toronto and A. Harris Son & Company Ltd., both of Ontario, Canada. Both of these companies had on their own been industry leaders in the production of implements.

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06-13-2020 20:03:42

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 Re: MF 175 in reply to Kdf101, 06-13-2020 18:52:48  
Far smarter than me people should be along shortly but the point gap will effect the ignition timing. That is only based on a few years of turning wrenches on old stuff. As for the timing marks location, I have no knowledge but I would be looking at the flywheel area. I suspect timing should be around 5 degree BTDC. First verify you set your point gap correctly. Extremely rough, compression check? Firing order with crossed wires? Oops?

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