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Question DT 175 Carb boot install

  • The Blur
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DT 175 Carb boot install was created by The Blur

1978 DT 175.    What's the trick to installing the rear carb boot... to the air box?
Does that go on 1st before installing the carb?    or afterwards?

There is literally no room in there to squeeze on the rear boot... because I already installed the carb.
10 Jan 2022 18:41 #1

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Replied by MarkT on topic DT 175 Carb boot install

I install boot before carb. 

It's a real pain, especially when the boot is hard.  New boot makes it easier.  Some people have said putting boot in hot water softens it enough to help. 

Basically I start front of carb into manifold at angle and try to start boot onto back of carb while pushing carb into front of boot.  It's not easy.  Just have to be patient.  Once you get it the first time it becomes a little easier as you get the hang of it. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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11 Jan 2022 18:18 #2

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Replied by The Blur on topic DT 175 Carb boot install

It's ridiculous.   I had to loosen up the airbox, and then finagle it in there.   With the rear boot attached to the carb.     Getting a 1/4" of movement at the airbox makes a big difference.
12 Jan 2022 05:33 #3

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Replied by akara1 on topic DT 175 Carb boot install

I get it nice and hot and soft with a heat gun and then put it on with welding gloves
13 Jan 2022 09:00 #4

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Replied by The Blur on topic DT 175 Carb boot install

I can't imagine working with welding gloves.   Especially in that tight area.
I use a hair dryer, and get it hot enough to work with, and spray silicon.  

Now I need to get the little oil line, & climps.     do you know if they are readily available ?
13 Jan 2022 09:09 #5

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Replied by Gr8uncleal on topic DT 175 Carb boot install

"Now I need to get the little oil line, & climps.     do you know if they are readily available ?"

Both still available from Yamaha, but note the following:-

1) You'll likely get a length of oil line/hose longer than you need.
2) Little crimps are now silver as opposed to black.
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13 Jan 2022 09:43 #6

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Replied by loner on topic DT 175 Carb boot install

Sorry that I haven't been online more. I have had the same problem with my '78 DT125 and had to loosen the airbox to install the carb. worked like a charm!
14 Jan 2022 20:47 #7

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