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RMOMN
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Joined: 03 Jul 2008
Posts: 95
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 Posted: Sat Feb 09, 2013 3:32 pm Post subject: 620 Compression |
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What should the compression be and what is considered OK?
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johndeeregreg
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Joined: 14 Jan 2011
Posts: 48
Location: se mn
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| Posted: Sat Feb 09, 2013 5:51 pm Post subject: Re: 620 Compression |
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we have one with 100# in the left hole and 75# in the right hole and it runs good. the other one we have is sone where between 100 and 125# in each hole,dont remember the exact number now but that one was the same on each side if i remember right, it also runs very good
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Gene Hillman
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Joined: 30 Jul 2009
Posts: 42
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| Posted: Sat Feb 09, 2013 7:59 pm Post subject: Re: 620 Compression |
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Well charged battery, both plugs removed, throttle and choke wide open, accurate gauge. Eveness is more important than the reading but should be within 10 percent of each other.
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RMOMN
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Joined: 03 Jul 2008
Posts: 95
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| Posted: Sun Feb 10, 2013 7:31 am Post subject: Re: 620 Compression |
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My 620 has 90# on both cylinders I was told the tractor hasn't been used in over 10 years. I'm going to plow with it and see how it does
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BushogPapa
Tractor Guru
Joined: 26 Dec 2001
Posts: 5178
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| Posted: Sun Feb 10, 2013 12:35 pm Post subject: Re: 620 Compression |
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Usually best to check it on a couple different occasions..you never know if you might have a little chunk of carbon trapped under a valve that could be temporary..
Pretty sure mine is around 125# in each one..
Can handle 4x16" in 2nd in some hard-pulling ground..when properly weighted..
Ron..
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