Question about Yamaha DT 360 Motorcycles

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1977 dt 175 e and i can't get it to fire i put a new coil and still no spark

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My old 73 175 had points, I don't know if yours does. There is also the stator/ magneto. Try disconnecting the kill switch or unplug the key cylinder. There is a more detailed check in the manual. I can't find my old 175 manual but ttr125 says 1) check plug for spark- clean or replace. 2) check entire ignition system for connection. 3) check ignition stop switch. 4) check coil. a- primary coil, b- secondary coil. 5)check cdi coil. a-pickup coil. b- charging coil. Since you have replaced the coil I will only give specs for the cdi check. The picture shows a plug under the tank disconnected. It has four wires brn grn red and wht. To check pick up coil resistance set ohm meter to x 100. attach the plus lead to red and neg. lead to white. It seems to have a short wire in each jaw of the alligator clips of ohmmeter that is pushed into the disconnected plug that contacts appropriate wire color. Reading should be 248 to 372 ohm at 20 degrees C (68 degrees F). Charge coil test places the plus lead of ohmmeter to the brown wire and neg. lead to the green wire of the open plug. Meter at x 100. Reading should be 688 to 1032 ohm at 20degrees C. Of course while doing step 2 check for good grounds and tight connection at plug cap and use a new plug. Good luck.

Posted on Apr 06, 2011

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Readings for the stator/Magneto:
B-R/W 14.5 (x200 scale)
Br/B .420 (x2k scale)
G/B 2.3 (x200 scale)

Posted on Sep 02, 2012

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Hi I have a 1974 dt 360s that needs a new RH front fork and as the DT 175 runs the same size 21 inch front wheel as the dt 175s does that mean the front forks are interchangeable ? I have only been able to...

no not really,the diameter of the fork tubes are probably different,maybe a dt 400 would be closer,replace them in pairs,dont replace only 1,the spring rate & dampening is different,try junk yards in your area,get a complete front end from a dt 400,it should fit.

May 13, 2014 | 1974 Yamaha DT 360

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1977 - 1979 yamaha dt 175

Hi, Skibsy the vast majority of service, parts, and owners manuals on the internet are "FREE" to download and all service manuals contain wiring diagrams in the back pages. The rest usually charge a modest fee around $10 sometimes more and there is a handful of obscure, rare, obsolete, and very old models that are no longer or never were available, then there is eBay where you may be able to find what you need at a very high price because of its age and rarity. Most of the "FREE" manuals will cover your exact make, model, and year otherwise one will be provided that comes as close as possible to your bike and will have most of the same info that an exact manual would have.
To download your manual please click on the blue links below. Good luck and have a wonderful day.
Yamaha DT100A 1974 Service Manual
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Apr 04, 2012 | Yamaha Motorcycles

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1977 YAMAHA MX 400 weak spark from cdi ing i put yz 426 f because there is not a mx in the hole list

Hi, Weszz3 there is no such thing as a weak spark even though dozens of riders will swear that's what they have and are dying to show you, the bottom line is either you have spark or don't have spark there is no in between.
You won't see a dirtbike spark really well, and people only look at it when they have a problem. It is designed to fire under extreme pressure (13:1 compression) and is very robust, but it is not a 1mm bright blue line jumping across a spark plug. It can be white and very hard to see. If you are confident you have weak or no spark prove it by holding the plug in your hand and stark kicking you will be in for a "SHOCKING" surprise!!!!!
60% of these bikes have a flooding issue and/or a fouled plug. 30% need valves adjusted and most of the remaining 10% are something simple in the electrics like a broken kill switch, bad earth on the battery or dead battery, wiring at the steering head damaged or blown fuse.
For more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Aug 02, 2011 | Yamaha Motorcycles

1 Answer

Sat on the bike what the firing oder

I think japanese inline fours are the same -

sitting on the bike, from left to right, the cylinders are 1 to 4

one coil fires cyls 1 and 4 and the other fires cyls 2 and 3. you can swap 1 and 4 or 2 and 3, it makes no difference at all, but you can't put the 2-3 coil on cyls 1 or 4 and vice versa... you should be able to put the long spark plug wires on cyls 1 and 4 and the short ones go to cyls 2 and 3.

Dec 17, 2010 | 1977 Suzuki GS 750

2 Answers

I get around 1 volt going in to the coil but no spark do i need more than one volt going in what should i check and how 1993 DT 175

Is your bike a one volt bike or a 12 Volt DC biker?
1. What state is your battery
2. What state are your wirings from battery to coil
3. What states are your wirings in overall?
4. How are the wiring connections, are they all tightly connected?
5. Turn on your lights and see if they comes on bright or dim?
6. Press your horn does it sound solid or last breath?
7.If you can unplug your spark plug wire, put the wire about 5 cm from the spark plug tail and see if any sparks jumps, good idea to do it in a dimmed area.
This are just a minor checking indicators as many causes can be the source cause of your problem.

Sep 02, 2010 | 2000 Yamaha DT 125 R

2 Answers

Yamaha dt 175 spark from the coil.I

i have the same problem on my dt but i just cant find out whats wrong

Dec 03, 2009 | Watches

1 Answer

Yamaha dt 175, voltage question. When idling, my DT measures 7 volts across the battery terminals. When revved it jumps up to over 13 volts. This is a six volt bike. I know the battery is completely shot....

You need new regulator and new battery.The battery works as a filter as well.If it is in bad condition it does not filter anything and in high rpm the current is very high.

Jun 08, 2009 | 2006 Yamaha DT 125 X

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