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AC 170
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Gpopm55 View Drop Down
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Joined: 18 Nov 2025
Location: New york
Points: 2 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gpopm55 Quote  Post ReplyReply Direct Link To This Post Topic: AC 170
    Posted: 18 Nov 2025 at 3:46pm
My 170 has MS tsx928 carburetor on it. I can only get it to run full choked. Any suggestions?
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8070nc View Drop Down
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Joined: 21 Mar 2019
Location: North Carolina
Points: 650 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 18 Nov 2025 at 6:06pm
Id say the jets are stopped up. You wil need to take it off and clean it
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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ja ecmn View Drop Down
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Joined: 03 Oct 2011
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ja ecmn Quote  Post ReplyReply Direct Link To This Post Posted: 18 Nov 2025 at 7:37pm
Some years ago I purchased a 175 that had the TSX928 that would run only with choke on. To make a long story short brought the carburetor to mechanic who found a recent carb cleaning resulted in the Venturi being installed upside down. Has run great since. Just a thought. Good luck.
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Claus View Drop Down
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Joined: 09 Dec 2009
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Points: 1161 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Claus Quote  Post ReplyReply Direct Link To This Post Posted: 3 hours 31 minutes ago at 6:19am
Manifold gaskets dried out, sucking air?
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Claus View Drop Down
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Joined: 09 Dec 2009
Location: Hebron In
Points: 1161 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Claus Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 19 minutes ago at 7:31am
I also always put a can of Seafoam in my 170 whenever I gas it up. Helps keep the needle and seat clean. Also recommend an inline filter before the sediment bowl. I added a ball valve shutoff because the one under the tank is not easily accessible. I used a Legend 101-520 1/8” T900.

Edited by Claus - 1 hour 53 minutes ago at 7:57am
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