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Overheating problem / excess oil
(Preview)
Hey guys, got a few for you, - there seems to be a fair amount of oil coming from the primary drive gear, - leaking from between the shaft and the engine. is this an internal or external fix normally? BIke has been overheating - remedy top up coolant. - (expansion tank showed normal level.) This stoped t...
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roadyz
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15
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237
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lmfao ,speed
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My bike was always slow ever since i got it running , ran fine but just didnt wheelie , slow as hell .When i changed gear didnt really go that fast would get beat by a 125 extr 4 stroke . The dep end can was blocked, never thought it was that bad ,Then i took some out and it blocked it self up as i didnt put enough ,...
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louisBOSS
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0
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182
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overheating need help1
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1 2
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(Preview)
hi there i got a 97 dt 125 and it is over heatingi would like some help please i have changed head gasket to genuine one i put new pistong and ring in it bout week ago flushed out all hoses and the radiator put new 2 stroke and engine oil in it i checked wether water pump work and it seems to all work fine the temp g...
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dansolo
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48
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814
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intermitent problem
(Preview)
hi all i have a intermitent problem with my bike, it starts wen it wants to basicaly it was running the other day and it was running nice road it for a bit turned it off went to take it out the back and it wouldnt start so i stripped the plastics looked around the wires couldnt see a problem soo i took the plug ou...
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lee_92
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8
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185
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gearbox question
(Preview)
Having just sold my honda cbr125r which had a super smooth gearchange,i've bought a 2001 dt125r with only 4000 miles and 2 owners, the gearbox feels a bit notchy to me particularly when shifting down its not too bad shifting up,clutch cable is adjusted correctly,maybe all dtr's are like this i don't r...
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bobo
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2
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121
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DT125R Gearbox drain bolt length question
(Preview)
Just unscrewed the gearbox drain bolt on the right hand side of my 2001 dt125r to drain the gearbox oil,it seems really long about 2 to 2 1/2 " long is this right ? as it won't pull out easilly as the rear brake lever's in the way,most drain screws i've encountered in the past are usually short and stub...
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bobo
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2
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148
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Standard Piston or after market piston?
(Preview)
Im going to do a top end on my dt125re soon for peace of mind because it is just touched 11,000 miles So what should i buy a standard yammy piston kit from local yammy dealer, or should i buy an after market on like a "MITAKA" piston kit from eBay? Any help apreciated thanks again!
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CooS
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5
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211
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Engine rebuild question?
(Preview)
ive been reading on the other part of this forum that its recomended to rebuild your engine every 12000 miles mines has just turned 19000 and still not been touched. how do you know if you need a rebuild do you have to wait to it seizes or just rebuild it when ever you feel like it my bike is still starting fir...
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jpderv
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5
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174
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Throttle Sticking
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1 2
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(Preview)
Hello Lads, has anyone else ever had this problem, its happened to me a few times recently, ok, my bike is running stationary, just sitting there then suddenly NOT using the THROTTLE the bike will Rev to about 10k on its own :-S now this deffo made me think WTFFFFFFFFFFFF is going on, any help please, oh a...
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PatMan
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38
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685
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new clutch cable help
(Preview)
Just bought a nice low mileage dt125r but the clutch cables quite stiff stiff when pulling the lever in so thinking of fitting a new one,lots for sale on e bay, are there any makes better than others i.e. the pattern ones,as i can't see any genuine yamaha ones on there.
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bobo
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5
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171
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Spluttery at 7000rpm?
(Preview)
Just after a little bit of help and advice gents, I've had my DTR a little over a week, and I love it, brilliant fun to ride around on, and I'm getting more fun out of it than I used to get on my Mito! However, I have recently found that in most gears, moreso in fifth and sixth, when I get to 7000rpm it coughs splu...
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mammoth200
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11
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643
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03 powervalve
(Preview)
hi im not sure if my pv is working properly i have recored a vid of it and i am uploading it to youtube now so if any1 could take a look and let me no it would be appreciated thanks
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lee_92
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9
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223
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Carb Jetting
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Hey gents, I'm after a bit of carb info if possible. I have an '03 DTR with a Big One expansion and afaik everything else is standard at the moment. When I had a look in the Haynes manual for the bike, it states that the main jet size is supposed to be a 240, on the standard mikuni carb anyway. I was under the imp...
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mammoth200
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29
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1086
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i have a lil problem with the old girl
(Preview)
my bike will run for a while then it will kinda stop running then suddenly it will fire back up as if nothing happend also i have no bottem end power it evens struggles to get to the power band
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allen dt 89
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2
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153
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yz head on dt
(Preview)
i been told that the yz head fits the dt is there a compression difference or no ??? -- Edited by rob patton on Tuesday 31st of May 2011 10:31:28 AM
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rob patton
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13
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469
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Sprockets...new topic??
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1 2
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(Preview)
Hi all...so searched for a while for old sprocket posts but they all seem 12 months+ old, or not relevant to me. So anyway, now im living in london, i pretty much never go above sixty. dont wanna take my bike much over that anyways...and chain and sprockets are getting a bit thin now anyways...so time for...
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Sgt-syphilis
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30
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1169
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Leaky oil pump & crap 2 stroke oil
(Preview)
Right, i've got this DTR that i'm gonna use off road so changed gear oil and fork oil and generally tidied it up. Then i noticed an oil leak from the RHS cover - turns out oil pump is leaking from the top. Did some research and oil pumps are apparently non-servicable so got one off ebay (6 quid result). Came...
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garytee
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2
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192
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Serious issues.
(Preview)
Right, been having some bad issues. the bike just wont start. will kick over. good compression, got a spark, fuel getting to chamber. But nothing. ive tried all the usual things and even mr haynes is out of ideas. any help would be appreciated. :) Also, can i take the cylinder and head off, and fit a pist...
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bkray
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12
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345
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dt 125 x 2005 - 170cc big bore kit
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http://www.adrenalin-pedstop.co.uk/p/Yamaha_DT125_R_RE_X_...
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connor10345
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2
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285
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dt200 engine in dtr125??
(Preview)
Hello, was wondering would a dt200 engine fit my 1990 dtr125, what would I have to do to the bike?? -- Edited by mammoth200 on Friday 10th of June 2011 03:49:19 PM
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Midnight_Rider
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8
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262
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engine cut out????
(Preview)
Morning all, Right well i was doing 65mph on a straight "thank god" when the bike just STOPPED DEAD. Grabbed in clutch ect. Pulled over as coasting with clutch in. Elecs all work but as mines a kicker no elec start went to kick over and nothing. I mean it has no movement as a sieze? There was no in...
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drunkenmonks
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5
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208
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few questions related to engine numbers and CDi's and carb models
(Preview)
right, as i stated in my project im having a few running issues. my bike is a bit of a mis-match of parts, so bare with me here, i really need another opinion on this. my old engine cases were model "3BN" (replaced) my current/original CDI is also "3BN" (kept this) my original barre...
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MartZ0r
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11
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367
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help plz has any one had this prob with ypvs
(Preview)
turns good when i turn key but not when i rev or ride this is melting my head
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mx gaz
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16
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330
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Clutch Plates
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1 2
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(Preview)
Ok before I start I have tryed looking through this section for the right topic ANDDDDDDDDDD read the haynes manual, unlike some do but still to no joy I am scratching my head......... I changed my clutch plates over, as they were very worn, the new ones have come, and now I am thinking this is the bit how t...
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PatMan
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48
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711
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gearbox question
(Preview)
Firstly high everyone im new here just wanted to say hello. Secondly ive just purchased a dt125r 2003 its a tidy enough we bike a couple of questions though when i start the bike from cold and click it into first there is a loud clunk sound sumtimes it stalls the bike it only does it forst thing though the r...
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jpderv
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6
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235
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