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Transmission oil level

  • rz35085
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Transmission oil level was created by rz35085

I nearly have my 68 DT 1 back ready for the road. My question is what is the mark on the transmission dipstick for? I know it says it holds 1000cc's. I put in 500cc's and the oil level is at the top mark. Hopefully pics attached.
Thanks


26 Feb 2017 14:55 #1

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Replied by 1971DT250 on topic Transmission oil level

Did you screw the dipstick in?

To check it you have the bike straight upright and level, put the dipstick in so it is resting on the opening, don't screw it in.
The hours spent riding my Enduros is not deducted from my life span.
26 Feb 2017 15:42 #2

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Replied by rz35085 on topic Transmission oil level

That's how I did it. I believe the dipstick is original. At 500 cc it hits the top mark.
26 Feb 2017 17:18 #3

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Replied by 1971DT250 on topic Transmission oil level

I would drain the oil completely and measure it. Then put 1000 cc (1 Liter) back in.
The hours spent riding my Enduros is not deducted from my life span.
26 Feb 2017 17:27 #4

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Replied by pxg1976 on topic Transmission oil level

I have the same problem and find this old thread with no real answer. I’ve drained the transmission oil from my DT250 for a clutch refurbishment. When I refill with fresh oil I get to 400ml and the dipstick (just resting in the hole) shows max. The bike is perfectly level. 
I’m wondering if 700ml of oil hides somewhere in the gearbox refusing to drain out fully. Any ideas?
17 Oct 2021 05:47 #5

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Replied by RT325 on topic Transmission oil level

Just drain it overnight incase the hole that lets it drain from clutch & trans is restricted. I "think" the drain bolt overlaps both side slightly--but been a while. Next day lean it left & right to see if any more.
Probably was ok--what you did--but after filling it takes time to fully level & slow to get to the middle. Just fill it & leave overnight propped up vertical & she'll be good. That's just dipping not screwing in on the dipstick.
Maybe fill on the sidestand "kickstand" if you think it'll overflow, then prop up straight overnight to check later.
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18 Oct 2021 01:57 #6

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Replied by pxg1976 on topic Transmission oil level

Yes, that’s the solution! It seems that it takes an age for newly added oil to find its level through the various nooks and crannies in the gearbox. I left it overnight and the dipstick was now dry. Filled up with remaining oil and will check again tomorrow. (DT250 1976 fitted with later MX engine)
18 Oct 2021 10:22 #7

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Replied by 1971DT250 on topic Transmission oil level

The oil passage where the screwdriver is pointing to is how the oil moves from the right side cover into the crankcase. The other holes have shafts in them. So it will take awhile for the oil level to stabilize.

 
 
The hours spent riding my Enduros is not deducted from my life span.
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18 Oct 2021 15:41 #8

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Replied by MarkT on topic Transmission oil level

Almost all gaskets have a extra material sticking up inside which slows and traps oil even more.  Some aftermarket gaskets are really bad. 

If you follow the Yamaha owner's manual process of warming up the engine a few minutes before checking oil level that works too.
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
18 Oct 2021 15:55 #9

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Replied by RT325 on topic Transmission oil level

Does that hole have the drain bung getting in the way, or partially getting i the way of oil transfer--without me looking for a case.
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18 Oct 2021 18:39 #10

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