yazholes Posted August 18, 2009 Share Posted August 18, 2009 hi i have just brought a realy cheap dt 175 sight un seen (silly move i know) and i just found out why it was so cheap the wiering is all disconected. i was woundering if i could get some help please. the magneto has 6 wieres: brown, black, red/white, yellow, green and blue the CDI has 6 as well but in 2 lots of 3: lot 1: brown, black, red/white lot 2: black, black/white, orange im gessing the brown, black, red/white on the magneto go to the same colour on the CDI but where do the rest go? and there are all these other wiers do i need to do any thing to them or just get rid of them. im just riding in the bush so i just gota get the old girl runing any info is good info thanks Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 18, 2009 Moderator Share Posted August 18, 2009 hi i have just brought a realy cheap dt 175 sight un seen (silly move i know) and i just found out why it was so cheap the wiering is all disconected. i was woundering if i could get some help please. the magneto has 6 wieres: brown, black, red/white, yellow, green and blue the CDI has 6 as well but in 2 lots of 3: lot 1: brown, black, red/white lot 2: black, black/white, orange im gessing the brown, black, red/white on the magneto go to the same colour on the CDI but where do the rest go? and there are all these other wiers do i need to do any thing to them or just get rid of them. im just riding in the bush so i just gota get the old girl runing any info is good info thanks Black/white to kill switch, orange to ignition coil, black to chassis. The other colours from the magneto are lighting and battery charging coils so depends on whether youre going to run with lights and a battery. ...Paul Link to comment Share on other sites More sharing options...
yazholes Posted August 18, 2009 Author Share Posted August 18, 2009 Black/white to kill switch, orange to ignition coil, black to chassis. The other colours from the magneto are lighting and battery charging coils so depends on whether youre going to run with lights and a battery. ...Paul thanks for the super Quick reply ive done as follows magneto wier to CDI magneto CDI red/white to red/white brown to brown black to black to chassis and the orange from CDI to coil. still no spark, the only wiers that have power from the magneto are the yellow and green is this normal if so how do i get power to the CDI. the kill switch can be left disconected hay. thanks Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 18, 2009 Moderator Share Posted August 18, 2009 thanks for the super Quick reply ive done as follows magneto wier to CDI magneto CDI red/white to red/white brown to brown black to black to chassis and the orange from CDI to coil. still no spark, the only wiers that have power from the magneto are the yellow and green is this normal if so how do i get power to the CDI. the kill switch can be left disconected hay. thanks What have you done with the black and white wire, as that goes to the kill switch and if its earthed then, no spark. The CDI generates ALL the power it needs from the mag, the ig system is completely self contained so if its a bush basher you can sling most of it, battery included. Link to comment Share on other sites More sharing options...
yazholes Posted August 18, 2009 Author Share Posted August 18, 2009 What have you done with the black and white wire, as that goes to the kill switch and if its earthed then, no spark. The CDI generates ALL the power it needs from the mag, the ig system is completely self contained so if its a bush basher you can sling most of it, battery included. another quick reply i like this. cool thanks mate i dont have the black/white wier conected to any thing its just sitting there its just a single wier hay. so does it sound like ive got it hooked up right. thanks Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 18, 2009 Moderator Share Posted August 18, 2009 another quick reply i like this. cool thanks mate i dont have the black/white wier conected to any thing its just sitting there its just a single wier hay. so does it sound like ive got it hooked up right. thanks Right give this a try, brown to brown, red/w to red/w and black to black but NOT ground. Now with lot 2 from the cdi orange to the coil, black and white NOT earthed and black to chassis. Does that make sense? Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 18, 2009 Moderator Share Posted August 18, 2009 is the key switch fitted? if it is try disconnecting it, if that works re connect the kill switch as a means of stopping the engine Link to comment Share on other sites More sharing options...
yazholes Posted August 18, 2009 Author Share Posted August 18, 2009 Right give this a try, brown to brown, red/w to red/w and black to black but NOT ground. Now with lot 2 from the cdi orange to the coil, black and white NOT earthed and black to chassis. Does that make sense? i did what you said and i kicked it and it gave me a small zap then i did it a few more times and it wouldnt zap me again what does that mean, shouldnt it be a pritty noticable shock if it zapes me. thanks Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 18, 2009 Moderator Share Posted August 18, 2009 i did what you said and i kicked it and it gave me a small zap then i did it a few more times and it wouldnt zap me again what does that mean, shouldnt it be a pritty noticable shock if it zapes me. thanks Zaped from where? were you hanging onto the plug? Thery are all good connections arn't they not just twisted wire and gaffer tape? Have you a fresh plug to try. Link to comment Share on other sites More sharing options...
yazholes Posted August 19, 2009 Author Share Posted August 19, 2009 Zaped from where? were you hanging onto the plug? Thery are all good connections arn't they not just twisted wire and gaffer tape? Have you a fresh plug to try. hay mate thanks for your help. i got spark again like i had yesterday but its not enough to arch out the spark plug. i got a new plug and tryed it again but still only a little zap, could the magneto not be sending enough charge. yhar i had my finger on the tip of the plug and it arched through my hand to the kick start there all factry conections and ive unpluged and pluged them back in incase of corrosion. thnaks Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 19, 2009 Moderator Share Posted August 19, 2009 hay mate thanks for your help. i got spark again like i had yesterday but its not enough to arch out the spark plug. i got a new plug and tryed it again but still only a little zap, could the magneto not be sending enough charge. yhar i had my finger on the tip of the plug and it arched through my hand to the kick start there all factry conections and ive unpluged and pluged them back in incase of corrosion. thnaks Check the resistance values of your magneto source coil = 420 ohms +- 10%............Brown to chassis Check the resistance of the magneto pulse coil = 12.4 ohms +- 10%...........White / Red to chassis Check the resistance values of the ignition coil, Primary = 1.0 ohm =- 15%, secondary = 5900 ohms +- 20% Link to comment Share on other sites More sharing options...
yazholes Posted August 19, 2009 Author Share Posted August 19, 2009 Check the resistance values of your magneto source coil = 420 ohms +- 10%............Brown to chassis Check the resistance of the magneto pulse coil = 12.4 ohms +- 10%...........White / Red to chassis Check the resistance values of the ignition coil, Primary = 1.0 ohm =- 15%, secondary = 5900 ohms +- 20% ok thanks mate ill give that a go, if it is the magneto is there a way to repair it, it sounds like it just needs a cleane up it was sitting in the guys shed for a while and it had mud all over it. where can i buy parts for this bike is there a place on the net. thnaks again Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 19, 2009 Moderator Share Posted August 19, 2009 ok thanks mate ill give that a go, if it is the magneto is there a way to repair it, it sounds like it just needs a cleane up it was sitting in the guys shed for a while and it had mud all over it. where can i buy parts for this bike is there a place on the net. thnaks again Mighjt be an idea to get a proper flywheel puller first, ( I think it has a 27mm thread) take the flywheel off and have a look at the components of the back plate to see if all looks well, not rusty and full of crud. As for parts.i use ebay, wemoto, motolink, ebay...and for genuine yamaha parts ...fowlers of Bristol Link to comment Share on other sites More sharing options...
yazholes Posted August 19, 2009 Author Share Posted August 19, 2009 Mighjt be an idea to get a proper flywheel puller first, ( I think it has a 27mm thread) take the flywheel off and have a look at the components of the back plate to see if all looks well, not rusty and full of crud. As for parts.i use ebay, wemoto, motolink, ebay...and for genuine yamaha parts ...fowlers of Bristol ok thanks mate. so how do i remove it take the nut off then do i need some sort of puller to remove it. thanks Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 19, 2009 Moderator Share Posted August 19, 2009 Just an idea but have you re-made the connection between the plug cap and the fat lead from the ig coil as that can get all shitty real fast and ruin your day. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 19, 2009 Moderator Share Posted August 19, 2009 ok thanks mate. so how do i remove it take the nut off then do i need some sort of puller to remove it. thanks I use one of these To get a grip of the flywheel, while the centre nut is undone, works best with something between the chain and flywheel (strip of inner tube, rubber glove etc) Then use a pupose made flywheel puller (27mm thread) like this to remove the flywheel. The chain type wrench is also used when re torqueing the centre nut on re-assembly. Thats a good point from Cynic though...an easy check to make on the HT cap connection. Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 20, 2009 Moderator Share Posted August 20, 2009 I use one of these To get a grip of the flywheel, while the centre nut is undone, works best with something between the chain and flywheel (strip of inner tube, rubber glove etc) Then use a pupose made flywheel puller (27mm thread) like this to remove the flywheel. The chain type wrench is also used when re torqueing the centre nut on re-assembly. Thats a good point from Cynic though...an easy check to make on the HT cap connection. OG i wish you would put some effort into your replies............. Link to comment Share on other sites More sharing options...
yazholes Posted August 20, 2009 Author Share Posted August 20, 2009 ok ill check that lead thanks for the effort your puting in. Link to comment Share on other sites More sharing options...
little dave Posted August 20, 2009 Share Posted August 20, 2009 cynic: please don't be so hard on old git, he has been to the coast and developed food poisoning at a french restaurant from "Le sea bass, stirred" they say, you are what you eat.... Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 20, 2009 Moderator Share Posted August 20, 2009 cynic: please don't be so hard on old git, he has been to the coast and developed food poisoning at a french restaurant from "Le sea bass, stirred" they say, you are what you eat.... Link to comment Share on other sites More sharing options...
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