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Makotosun

Sprocket cover

  • Stevvo
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DT2  .My damaged sprocket cover has Made in Japan cast into it but others I've seen are just plain. Looking at the parts lists 68-73 all seem to have the same part number, which years are supposed to be plain and which are cast Made in japan?
15 May 2024 04:34 #1

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Replied by 1971DT250 on topic Sprocket cover

I don't have a definite answer but I'll offer what I know. I have twelve 250s and 360s from '68-'73. Some are original and unrestored. Some have been restored. None have the Made In Japan in the casting. I have bought several NOS sprocket covers over the last few years. 2 have Made In Japan in the casting. The parts listings I have show only 1 part number 233-15421-00-00. There are 2 NOS covers on eBay now. Both have Made In Japan in the casting.
The hours spent riding my Enduros is not deducted from my life span.
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15 May 2024 17:02 #2

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Replied by Stevvo on topic Sprocket cover

So there seems to be no "correct" part!!
17 May 2024 11:32 #3

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Replied by Stevvo on topic Sprocket cover

Just looked, mine has 214 15421 00 cast inside
17 May 2024 11:59 #4

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Replied by MarkT on topic Sprocket cover

There absolutely is a correct original part which I suspect is the one without "Made in Japan" cast in...

(If I remember correctly, it was about 1974 when "Made in Japan" showed up in the cover casting on the new models?)

There are also "replacement" original parts that will function perfectly but might be cosmetically or otherwise different.  This cover is one of them.  Another example is the gauges on the 1968 DT1...  speedo and tach were unique (small tach is very obvious).   For decades now the "replacement" gauges supplied by Yamaha were the same as subsequent year DT1's...  The revised gauges work fine on a 1968 model but they are not "correct" if someone wants an all-original 68. 
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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17 May 2024 13:57 #5

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