DT125R ARCHIVE

tunertom · tunertom

Gearbox Bearings For Yamaha DT125R Here they are: Sprocket Bearing - 6304 Clutch Primary Drive Bearing - 6204ZZ Balancer Shaft Big Bearing -6302 Balancer Shaft Smaller Bearing - 6203 Secondry Drive Small Bearing - 6202 Just copy and paste these values into the search box on: www.simplybearings....

dan28 · dan28

I know the tzr has different gear ratio than the dt is there any difference between early an late dt gears?

2BLimitless · 2BLimitless

Need a little help guys think some clown has messed with the gear box in my dt.

2BLimitless · 2BLimitless

My bike is topping out at 100kph in 6th need to fix it. So I need to know what is the standard gearing

fused420 · fused420

I'm currently working on a Sachs XTC 125 Supersport which is DT powered. It has under 3000km on the clock, and only spent one year on the road (2000), but will only go in to 1st and neutral. I have taken it apart and the only thing i can see that could be a problem, is that the bearing on the selector drum doesn...

L_COLE · L_COLE

Just want to know what you guys think, about 2 weeks ago doing 50mph suddenly started spluttering kept on losing and regaining power, I had to slow right down to make it go away, then Last week approaching 50mph slight engine vibrations with a strange half a second spaced out thump, power delivery was w...

dread123 · dread123

whats the likelyhood of any of the gearbox bearings failing? about to re-assemble my engine- after bottom end rebuild. the bearings all look in ok condition but like some thoughts as to just replacing or leaving? Also when replacing bearings-do i put some oil in the seats or just slot them in bare? t...

GoProKid95 · GoProKid95

Hi all, what oil do you guys recommend for two stroke and what Gearbox oil does everyone use, thanks! :) btw my bike is a 2006 dt125re!

yamahadt125 · yamahadt125

i did one pannel in carbon vinyl wrap looks good took 2 and a bit hours still gotta do otherside at some point and some muddy pics after i went down a green lane spinning in first gear second third gear and forth gear haha need some better tires

yamahadt125 · yamahadt125

okay riding bike going down gears into second its grinding like im pushing in down but wont go down but when i bring revs up at some rpm it goes down but not smooth :( also going up it mad a massive noise and i was SH*t didnt sound good no more riding till i fix it otherwise might **** the gearbox teeth up hope...

gooner78 · gooner78

When I change up through the gears its lovely and smooth but when I'm changing down its very notchy especially going from 3rd,2nd and 1st. I don't think its the clutch as its brand new as are the springs. -- Edited by gooner78 on Saturday 17th of August 2013 07:24:38 PM

benjarminx · benjarminx

i was out riding on sunday with some mates and we stopped off for a while, started bike up left it warm up for a while, go on popped it in first and this noise comes along doesnt make the noise in all the gears but does in neutral? heres a video of me turning her over with a drill with the clutch off youll hear it...

BigPhil · BigPhil

Hi guys, recently realised my bike was using coolant, went to look through the g'box oil window to check if it was looking milky and then I see have little to no oil.. So I drain wats left which is mostly water, and re fill my oil to the line. I then check it in the morning and it has gone down very slightly, s...

swallow · swallow

Hi - I'm stripping out a right hand engine casing I bought on fleabay - seller stated it had done only 500 miles, so I was thinking the gearbox that was still attached would probably be a better candidate for my engine rebuild. Now, I've watched the engine strip down youtube video many many times but when...

zooankski · zooankski

Just in the process of putting the engine back together and have dropped the gear cluster in to the relevant bearings. My concern is where i should re engage the selector forks with the drum. Do i need to have the drum in a certain position before i pop the pin they move on back in place? I might still remov...

WoZz · WoZz

- -- Edited by WoZz on Friday 12th of July 2013 01:25:39 PM

NorDt · NorDt

So... recently a problem has occured.Sometimes when i shift from 1st to 2nd. It just goes into neutral. Thats not too big of a problem. But sometimes it has actually jumped from seccond and into neutral.... At first i was thinking maybe shifting upwards without the clutch while wheelieng had damage...

Topic		Started By	Replies	Views	Last Post
	STICKY: gearbox bearings (closed) Gearbox bearings Replace engine rebuild (Preview) Gearbox Bearings For Yamaha DT125R Here they are: Sprocket Bearing - 6304 Clutch Primary Drive Bearing - 6204ZZ Balancer Shaft Big Bearing -6302 Balancer Shaft Smaller Bearing - 6203 Secondry Drive Small Bearing - 6202 Just copy and paste these values into the search box on: www.simplybearings....	tunertom	0	1887	Mar 19, 2013 by tunertom
	Are all dt s geared the same (Preview) I know the tzr has different gear ratio than the dt is there any difference between early an late dt gears?	dan28	4	1931	Feb 13, 2015 by SMurF_12
	@9k rpm in 6th gear, what speed is your dt at? (Preview) Need a little help guys think some clown has messed with the gear box in my dt.	2BLimitless	5	1839	Aug 27, 2014 by 2BLimitless
	what is the standard dtr front and back sproket teeth count? (Preview) My bike is topping out at 100kph in 6th need to fix it. So I need to know what is the standard gearing	2BLimitless	8	2098	Aug 24, 2014 by 2BLimitless
	DT powered Sachs XTC problems (Preview) I'm currently working on a Sachs XTC 125 Supersport which is DT powered. It has under 3000km on the clock, and only spent one year on the road (2000), but will only go in to 1st and neutral. I have taken it apart and the only thing i can see that could be a problem, is that the bearing on the selector drum doesn...	fused420	8	2046	Aug 20, 2014 by fused420
	Having some problems with my dt (Preview) Just want to know what you guys think, about 2 weeks ago doing 50mph suddenly started spluttering kept on losing and regaining power, I had to slow right down to make it go away, then Last week approaching 50mph slight engine vibrations with a strange half a second spaced out thump, power delivery was w...	L_COLE	27	3246	Jul 4, 2014 by Calum122
	replace bearings or not (Preview) whats the likelyhood of any of the gearbox bearings failing? about to re-assemble my engine- after bottom end rebuild. the bearings all look in ok condition but like some thoughts as to just replacing or leaving? Also when replacing bearings-do i put some oil in the seats or just slot them in bare? t...	dread123	9	1929	Mar 22, 2014 by Darren
	What Oil? (Preview) Hi all, what oil do you guys recommend for two stroke and what Gearbox oil does everyone use, thanks! :) btw my bike is a 2006 dt125re!	GoProKid95	4	1642	Mar 14, 2014 by GoProKid95
	on the bright side of the gear box problem (Preview) i did one pannel in carbon vinyl wrap looks good took 2 and a bit hours still gotta do otherside at some point and some muddy pics after i went down a green lane spinning in first gear second third gear and forth gear haha need some better tires	yamahadt125	0	1662	Oct 30, 2013 by yamahadt125
	i need help gear boxs problem (Preview) okay riding bike going down gears into second its grinding like im pushing in down but wont go down but when i bring revs up at some rpm it goes down but not smooth :( also going up it mad a massive noise and i was SHt didnt sound good no more riding till i fix it otherwise might *** the gearbox teeth up hope...	yamahadt125	0	1518	Oct 29, 2013 by yamahadt125
	Notchy gears (Preview) When I change up through the gears its lovely and smooth but when I'm changing down its very notchy especially going from 3rd,2nd and 1st. I don't think its the clutch as its brand new as are the springs. -- Edited by gooner78 on Saturday 17th of August 2013 07:24:38 PM	gooner78	0	1686	Aug 17, 2013 by gooner78
	Gearbox rebuild needed! (Preview) i was out riding on sunday with some mates and we stopped off for a while, started bike up left it warm up for a while, go on popped it in first and this noise comes along doesnt make the noise in all the gears but does in neutral? heres a video of me turning her over with a drill with the clutch off youll hear it...	benjarminx	3	1575	May 12, 2013 by NORFE
	Gearbox oil going somewhere ! (Preview) Hi guys, recently realised my bike was using coolant, went to look through the g'box oil window to check if it was looking milky and then I see have little to no oil.. So I drain wats left which is mostly water, and re fill my oil to the line. I then check it in the morning and it has gone down very slightly, s...	BigPhil	8	1974	May 1, 2013 by Calum122
	gearbox removal (Preview) Hi - I'm stripping out a right hand engine casing I bought on fleabay - seller stated it had done only 500 miles, so I was thinking the gearbox that was still attached would probably be a better candidate for my engine rebuild. Now, I've watched the engine strip down youtube video many many times but when...	swallow	4	1852	Feb 4, 2013 by slob
	Engine rebuild, gearbox re-assembly (Preview) Just in the process of putting the engine back together and have dropped the gear cluster in to the relevant bearings. My concern is where i should re engage the selector forks with the drum. Do i need to have the drum in a certain position before i pop the pin they move on back in place? I might still remov...	zooankski	2	1983	Oct 9, 2012 by NORFE
	How much gearbox oil does the dt take ? (Preview) - -- Edited by WoZz on Friday 12th of July 2013 01:25:39 PM	WoZz	4	2265	Oct 7, 2012 by NEV
	Problems with my gears (Preview) So... recently a problem has occured.Sometimes when i shift from 1st to 2nd. It just goes into neutral. Thats not too big of a problem. But sometimes it has actually jumped from seccond and into neutral.... At first i was thinking maybe shifting upwards without the clutch while wheelieng had damage...	NorDt	15	2844	Jun 30, 2012 by NorDt
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