'81 KZ650 CSR - Head Rubber plugs

Definitely have fuel and spark. Confirmed that.

I'll double check the timing.

I'm getting stumped by discovering things are working the way they should be!! But still no vroom-vroom!

As always, thanks for the help.

Check to make sure you have the coils wired correct. 



 

That Dyna S instruction sheet says the coils must be at least 3.0 ohms. 
The stock coils are supposed to be around 2.2 - 2.8 ohms.  The green Dyna coils are 3.0 ohm.
Also, the instruction sheet says to disconnected the blue oil pressure light.???
 

I am starting to think the issue is related to the Dyna --> Coils --> Spark.
Compression is strong.
Plugs are getting a good bright spark and are gapped at 0.035. 

But I do wonder if the plugs are not sparking when they should. 

On my bike (as if you are sitting on the seat), the left coil is connected to #1 & #4, the right coil is connected to #2 & #3. It seems like in the manual that they say the other ways, but ultimately, does it matter which side they are bolted to as long as they are wired correctly?
I feel like I need to check the wiring from the Dyna to the coils. Make sure the left side of the plate goes to #1/#3 and the right side going to #2/#3. 

Here's a quick video of me trying to start the bike from yesterday:


 

It doesn’t matter at all which side the coils are bolted to. It only matters the the green wire from the Dyna S goes to the coil that is connected to plug 2&3 then the black to coils that is connected to 1&4. Make sure you have to coils correct to the plugs IE one coil is connected to 2&3 and the other is connected to 1&4. Then connect the Dyna S accordingly 

Make sure you disconnect the blue wire in the bikes harness from the oil pressure switch.

if it still won’t run the like Martin said the stock coils might be the wrong resistance for the Dyna S

It may not matter what side if wired up correctly, but for simplicity & clarity & to minimize confusion, I would put the coils on the correct sides.  plus, this may cut down on the amount of time you have to think. or we.  hee.

1-2-3-4 & L-to-R as you're sitting on the motorcycle.
STOCK wiring:
RH coil = 1-4 w Black & red wires. red is power.
LH coil =  2-3 w Green & red wires. red is power.

Also, I would clean, check & lubricate the timing advancer and make sure it's correct for the motorcycle. 
The last 4 digits on the advancer should match the part number in the diagrams >> a 650-CSR should be 1022.
Separate the rotor from the advancer body & fill the groove w grease and apply grease to the pivot pins & springs. 
Operate the advancer by hand >> turn & release the rotor, it should snap back into the static position.
I use an automotive high temp grease. some greases are too thin & evaporate from the engine heat.
On some motorcycles the advancer or rotor can be installed 180 degrees off.  not sure about a 650-CSR.

1981 KZ650-H1 CSR wiring diagram.  click to enlarge. or open in new window & click again to enlarge.

Thanks for the help, guys. Really appreciate it.

I haven't been able to touch the bike this week but hopefully this weekend.

I will put the coils on the side that the manuals says for clarity sake. I know for a fact 1-4 coil is on the left side and 2-3 is on the right side.

I think I know the answer already (answer: it doesn't matter), but does polarity matter on the coils? Are there markings on the coil for the red wires and markings for the black or green wire? 
I guess the same question could be: do the coils indicate which wire should go to 1-2-3-4? 
 

Yes as far as I know polarity matters. The 1-4 coil will have a red and black wire. Red is 12v+ black goes to the rear pickup. The other Coil should have a red wire and a green wire. Again read is 12V + and the green wire will go to the Dyna S front pick up.

That then will dictate which plug wires go to 1-4 or 2-3. Now the coil doesn’t know if let’s say the RH plug wire goes to 1 or goes to 4, makes no difference.

wrote:

Yes as far as I know polarity matters. The 1-4 coil will have a red and black wire. Red is 12v+ black goes to the rear pickup. The other Coil should have a red wire and a green wire. Again read is 12V + and the green wire will go to the Dyna S front pick up.

That then will dictate which plug wires go to 1-4 or 2-3. Now the coil doesn’t know if let’s say the RH plug wire goes to 1 or goes to 4, makes no difference.

No polarity on those coils.  They can be hooked up either way.

By loves_guitar:  ... I guess the same question could be: do the coils indicate which wire should go to 1-2-3-4?  ...

No, the coils aren't numbered for the spark plug wires. 
However, see pg 6-6 in the 81 KZ650 FSM for the polarity.  I don't know if it matters.
Also, I don't know if the stock coils work w the Dyna S.


 

IT'S ALIVE!!!!!

Thanks SO MUCH for all of your help!

The problem was my wiring.

1. I was did not look closely enough at the wiring from the Dyna S to the coils. When I wired the Dyna S up last fall, I overlooked the little black and little green pieces of tubing over the Dyna S wiring that corresponds to the black and green wire to each coil. I just connected the black wire from the bike to the black wire from the Dyna S and the green wire from the bike to the Dyna S white wire (which was backwards). Thankfully my multi-meter helped show me that error last evening.
2. I actually had the coils on the bike installed correctly (1-4 on the right, 2-3 on the left), but I finally looked closely last evening for the + and - marks on the coils and noticed that I had the wires on the wrong posts. So I corrected those.

Once I had everything properly wired, I double checked my set-up of the timing of the Dyna, made some small corrections, and then fired it up!

What a great feeling!

Now on to making this bike a little more road-ready and starting to look the way that I want.

Thanks again, guys. I truly appreciate your help.

Good to hear. And now you have an engine that has all and more of the maintenance items done. I hear a slight pop but it looks like the air cleaner is out, it could be running a little on the lean side. Drop the air filter in, vacuum sync the carbs and start working on the chassis maintenance. Wheel bearing, chain, brakes, lube and adjust the cables, and lube all other points called out in the service manual. Unless of course you intend to start replacing rims, and handle bars.