Author Topic: Dt250 I'd and part numbers wanted  (Read 924 times)

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Offline twinrock

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Dt250 I'd and part numbers wanted
« on: November 03, 2014, 10:56:41 AM »
Hi guys I got a dt250 motor I'm doing some work on and the manual engine number reads 1RS top end is 1M100 things I need to replace are piston clutch plate both sets and the gear selector spline any help in identification and sourcing the required parts would be great thanks..

Offline fred99999au

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Re: Dt250 I'd and part numbers wanted
« Reply #1 on: November 04, 2014, 11:36:21 AM »
Google says 77-78, so, DT250D or E.

Clutch plates: friction 363-16321 x7, steel 49816325 x6, 1m1-18101-00 or 01 for the shifter shaft with the internal sector gear on the end.

Piston is a 1m1-11631-01-96 for stock bore of 69.96mm -97 for 69.97mm (dunno what the difference is apart from 0.01mm) then 1m1-11635-01 for 70.25 mm, 1m1-11636-01 for 70.50mm up to 1m1-11638-01 for 71mm which is the last factory oversize at 71.00mm.

These are all the original part numbers and most likely have been superseded but might give you a start.

Offline twinrock

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Re: Dt250 I'd and part numbers wanted
« Reply #2 on: November 05, 2014, 05:38:53 PM »
Thanks mate.. its the shifter shaft which is the main issue.. do u know ifanything else is compatible

Offline 2fITy.J

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Re: Dt250 I'd and part numbers wanted
« Reply #3 on: November 05, 2014, 05:50:45 PM »
This Yamaha 1M1-18101-01-00 SHIFT SHAFT ASY.1 is used on these models and components:
 
1977 DT250D SHIFTER 2
1977 DT400D SHIFTER 2
1977 IT250D SHIFTER 2
1977 IT400D SHIFTER 2
1977 YZ250D SHIFT SHAFT YZ250D
1977 YZ400D SHIFTER 2 YZ400D - E
1977 YZ400D SHIFTER 2 YZ400D E
1978 DT250E SHIFT SHAFT
1978 DT400E SHIFT SHAFT
1978 IT250E SHIFTER 2
1978 IT400E SHIFTER 2
1979 DT250F SHIFT SHAFT
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Offline fred99999au

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Re: Dt250 I'd and part numbers wanted
« Reply #4 on: November 06, 2014, 09:22:29 AM »
I thought it looked familiar. Geez, I love parts bin manufacturing.

Offline twinrock

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Re: Dt250 I'd and part numbers wanted
« Reply #5 on: November 07, 2014, 04:42:32 PM »
Hey wow thanks guys..thats awesome info