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DT400 B & C Differences

  • Andy_C
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DT400 B & C Differences was created by Andy_C

Sorry if this is a dumb question - but I am still getting to know these bikes.

What is the difference between a 400 B and 400 C?

Why cant I find a service manual for a 400 C - does the 400 B manual cover it.

Sorry to have to ask.
Ex Yam DT400C, Triumph Trident 660, Triumph 865, Kawasaki KH 400
09 Oct 2022 11:56 #1

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Replied by Gr8uncleal on topic DT400 B & C Differences

From the tech side, likely the same, but wait for others to confirm.

Paint/graphics might have been a smidge different.
09 Oct 2022 12:27 #2

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Replied by MarkT on topic DT400 B & C Differences

Yes, graphics are different on tanks and exhaust. 

1976 has a voltage regulator from the factory. 

That's all I can think of offhand. 
 
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
09 Oct 2022 12:39 #3

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Replied by JayB on topic DT400 B & C Differences

I could be wrong, but is the front engine mount on the 1975 DT400 B welded to the frame and the 1976 DT400C has a small plate that bolts to the frame and engine on the right side?  Or does the 75 have the separate plate too?  I only have a 76 to check.

Here is the picture from partzilla, that looks like the 75 has the plate too.

 
09 Oct 2022 20:37 #4

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Replied by Lizeec on topic DT400 B & C Differences

The main and pilot jets are different sizes for the 1975 & 1976 year models, other than that and what other’s have mentioned I think that is about it.
09 Oct 2022 22:14 #5

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Replied by Gr8uncleal on topic DT400 B & C Differences

"Here is the picture from partzilla, that looks like the 75 has the plate too."

Good point.

Also possible that such changes were made during a model's production run, but maybe only a Service Bulletin would give specific details.

As I mentioned previously, neither the Partzilla nor the CMSNL computerised parts listings are complete, so it would be good if you could find an original parts manual for your model.
10 Oct 2022 00:23 #6

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  • Andy_C
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Replied by Andy_C on topic DT400 B & C Differences

Thanks everyone.
Ex Yam DT400C, Triumph Trident 660, Triumph 865, Kawasaki KH 400
10 Oct 2022 08:08 #7

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Replied by Buggin on topic DT400 B & C Differences

I believe the triple clamp bolt heads that hold the fork are larger on the 75 than the 76 and they are chromed on the 75 but not the 76. Also tank decals are longer near the gas cap on 76. Oil tank decal is different and exhaust emblem is different too.
1976 Dt400
1985 RZ500
2001 Xr650L
10 Oct 2022 11:34 #8

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Replied by MarkT on topic DT400 B & C Differences

The Tech Library has both owner's manuals... The wiring diagram for the 400c with voltage regulator is in the back of the 400c owner's manual..
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
Last edit: 10 Oct 2022 12:05 by MarkT.
10 Oct 2022 12:04 #9

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Replied by Pedalcrazy on topic DT400 B & C Differences

Small thing but the 75 rear turn signal brackets were chrome. The 76 were black. The others have covered everything I can think of.
1978 DT400E
1976 DT400C
1973 RT3
1971 RT1B
1968 DT1 (3)
10 Oct 2022 16:45 #10

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