Hi al can any one help

[monkeymanjaso...]

Hi to every one iv got a yamaha dt 125 lc 1986 mk1 and does any one no if it has power valves or bands..

[Vincent]

yes, it has a powervalve. Next question?

Parts 15-23, N0.15 is the actual powervalve itself.
https://i77.photobucket.com/albums/j71/Drewskovitch/1.jpg

Now some of these models were restricted in the Uk and they did this by removing the powervalve electrics. There are three main parts:-
The powervalve controller - a wedge shaped black box that comunicates with the CD and tells the powervalves when to open.

The powervalve servo - this is an electric motor that, with the use of cables, spins the powervalve in the cylinder.

The Pulley - this is a cylindrical box, fitted to the oputside of the cylinder. Inside is a disc that the powervalve cables connect to to spin the powervalve.

All these parts are hard to get hold of now and are either NLA from Yamaha or cost a fortune new.

If the powervalve has been out of action for a while, you might need to remove it annd clean the carbon off it before it can be used.
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[monkeymanjaso...]

Hi thanks but thats not my engine mine is a 1986 lc

[Vincent]

[monkeymanjaso...]

Thats a dtr engine im on my phone so iv had a look on ebay and this is my engine heres the item number 400244184970 Iv found the same bike on the net heres the link
https://www.google.co.uk/m/search?site=images&source=mog&hl=en&gl=uk&client=safari&q=yamaha%20dt%20125%20lc%20mk1&sa=N#i=77

[Vincent]

Sorry mate, you obviously know a lot more about two stroke Yamaha liquid cooled engines than me

BTW, that engine's an '82
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[monkeymanjaso...]

Hi m8 thanks any way...

[monkeymanjaso...]

Does any one else no....

[Slacker24seve...]

A pink powerband will make it faster, be sure to change it while you're there.
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Banger rallies are ace

[Nope.]

Yeah m8 it shoud have lik 6 powerbands. If it aint got em den it wont run right yeah?
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Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[monkeymanjaso...]

Hi thanks for your help do they run by cable if so i can only find 2 one for the throtle and the other for the oli pump what does power valves look like....

[The Shaggy D.A.]

[monkeymanjaso...]

Thanks to every one for trying to help me

But mine dont have them at all iv been looking on the net
and i fund a engine on youtube and its the dtr with them
and its a newer engine mine is totally different engine
every engine i find with them is not the same as mine
there all dtr and newer....
Iv just got a haynes manual for it and it dont say nothing about them...

[Quornholio]

Troll?

[monkeymanjaso...]

[Quornholio]

Never mind, even a troll is more on the ball.

[Lipsmoker]

[monkeymanjaso...]

[The Shaggy D.A.]

Best leave the engine standard - if you retrofit them you'll only have to upgrade the brakes and suspension.
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[Quornholio]

[Slacker24seve...]

[Quornholio]

I just can't get over the fact the OP is telling others they don't know anything about bikes, yet is asking how to install powerbands. If he was that good, surely he would know?

[monkeymanjaso...]

What ????

[monkeymanjaso...]

[Livefast123]

She canna take the pink powerbands captain , personally i'd stick to maybe installing 2 red ones which come with a bit of extra stretch. It'll give you better power through the rev range but not push the engine too far.

Stick to 2 red ones and keep the bike original and you'll be on to a winner
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