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66 XLCH Mikuni Setup Help

Started by Robbie8919, May 21, 2014, 07:32:31 AM

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garyajaz

from another site

to retard the timing you turn the mag in a clockwise rotation.

from yet another site.

As I recall, if you are looking down on the magneto the rotor turns in a clockwise direction. Someone correct me here if that is wrong.
So to retard the timing you will rotate the mag housing in a clockwise direction.
To advance the timing you rotate the housing in a CCW direction.


Robbie8919

Panzar- Lol Nope. No Brief case. While that pic is me this is what I look like (well at least the only pic I have on my PC here at work that is readily available) That pic (the stupid one) was taken when I was on a TDY trip in Korea (TDY is a type of temporary deployment) I am going to go over to work on my bike today after work. I will let you all know tonight how it goes.

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Robbie8919

Thanks Gary.

So I drained and filled. I was going to drain from the case but after looking at a few different blogs the general (highly imposed) feeling was DO NOT DO THIS. So I drained the tank and kicked it trying to cycle as much oil out and refilled with the 2.5 qts. I replaced the plugs gaped at 30 and she talks a bit more but still not starting. I'm stumped and getting rather frustrated with her. I had a rather long conversation with her last night and told her what a B**** she is. (I guess that'll show her) Outside of building the roller to get a more constant turnover rate on her I have got nothing left. If I cqan put her on a roller and give some Ether as she is being forced to work I feel strongly that she will wake up.  :emoGroan: I can't think of anything else left. I went through the mag. Points are new and gaped correctly. (She has good spark) I went through the carb and cleaned it. Flushed the Gas tank and filled it with fresh (premium 94 octane). Flushed and filled with correct oil amount to ensure Crank wasnt sumped. She talks and even bitches a little bit but will not start. I guess I am just going to have to bite it and pay out the money and time to fabricate myself a roller jumper like they use for Race bikes. I am not about to drop $1000+ for something I can build myself for about $250.

Anyone else have any ideas?
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nibroc

 :oops:

Robbie---pts are set at 15 on mag and plugs are at 20--no other variences

get ya a service manual and study it :chop:

Robbie8919

I admit I just ordered a manual off of amazon today. I called Harley and they told me it was 30. I will try that gaping. I previously had it at 25 and got nothing out of her until I put it at 30. But at this point I am willing to try anything.  :rtfb:
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Panzer


Robbie, I truly am at a loss also.
You say you had a talk with her? ........and?
You have one of a kind, a silent woman.  :hyst:

Damn, I hate to see you build a roller out of pocket.
Look......isn't there a kid in the area that you can give him a $20 bill for him to push you with a good running start, say about three times for the $20?
I'd say off hand you tried everything that is expected and the B**** should run.
Just two last questions......are the plugs new, wet with fuel, what number plugs are you using?

Now I'm going into my think tank, gotta be something small we're missing.
As the terminator said, "I'll be back".
Hang in there with us Robbie, you came this far.
Everyone wants to change the world but, no one wants to change the toilet paper.

garyajaz

are you getting a real Harley manual?
some clymers and hanes give wrong info.
I have access to download one if you did not get original.

then time the damn thing.
roller is good for race bike.
but ya gonna have some body follow you around with it?  lol
if it backfires it should run.
did you ever hear it run?
are the valves set?

Panzer

Gary,
Through a PM I had him check to see if plug wires were reversed.......he checked, won't even backfire when reversed.
As the last step, and since he said it was sitting a rather looooong time, I have him (today) taking off the mufflers & running straight pipes.
There just might be mouse nests, or three in the pipes or some restriction, where the engine can't breath.
He's suppose to report back this afternoon.
Everyone wants to change the world but, no one wants to change the toilet paper.

Nowhereman

Reading all these posts... :scratch:

There are a lot of things / issues to review to know why it won't light off.
Impossible to do it from a website questionnaire.
Best bet is to get some guys to show up in your area and help out.
It will be worth some brew and food.
Good luck and let us know how it turns out. :soda:
- From Nowhere in particular

Panzer

I'm willing to go there for food and brew, anyone else?
Everyone wants to change the world but, no one wants to change the toilet paper.

Robbie8919

I am going to take the pipes off today after work. I am crossing ym fingers cuz I cant think of anything else it could be. I am down to front some brew and food to get her running. Hell I have a trailer I can borrow and tow her to some place and show up at your door with brew and food for that matter. The book is a Clymer. If I can just download an original please let me know where. The pipes on it are straight drag pipes (reference the pic I posted) so I am just going to leave the pipes off all together and give it a shot. As for the roller i feel like I just need to get it running. I'm not going to be ridint it more than around the block if she wont kick on her own. That's just dumb. Hahahahaha Quick question though what is the off position on the headlight switch?
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wheelie1239

So I read you have good spark and timing is correct. That it pops and wants to start. Then I would look at fuel. I am not up to speed on the mikuni's. I don't think they have an accelarator pump or an enriching device. If they do you need to use them in a certain sequence. Turn on enriching device and turn throttle part way to give it 3 squirts. That is a good starting point. Then try to kick it over. But like I said I don't think mikuni's have that setup. I know they do not have a choke either.

Your sure carb jets and passage ways are clean and not clogged? If the starting circuit is clogged it will not start easily. Are you getting gas on the plugs? After trying to kick it over pull the plugs and smell them. If getting gas it will be strong smell. Try opening the throttle just a little bit (1\8 to 1\4) when you kick it over. This will help it suck it more air and fuel. This procedure has helped me many times. You don't want to run it without pipes. It will be real loud. Flames will shoot out and exhaust valves will get very hot quickly.

Panzer

 Wheelie and to the rest, I've read and replied to a few of Rob's do's, don't's and findings by e-mail.
He did find something I consider big in why it won't start.
He told me that he will explain and post pixs of what he found, so I'll let him tell you all when he's ready, which should be real soon, so he says.
(I haven't seen the pixs either)
I told him that if he fixes what was found, I'm confident that it will run and run good..............he doesn't think so. :crook:
He is loosing confidence in all that he has done and been through to no avail.
I believe every wrench has felt beat at some point, only to be satisfied when he has done the "almost impossible" and brought the machine back to life.
Stay with him fellows, he needs a little more help through this project.

Panzer
Everyone wants to change the world but, no one wants to change the toilet paper.

Robbie8919

Give me a few. I am having trouble posting the pics. Pipes were not clogged. They are literally just straight pipes. No baffles at all. And they were wide open. With the pipes off I kicked and still had the same results. I put tape over part of the carb to promote more suction since the air cleaner if toast and it doesnt have it on it ( shouldnt make that big of a difference to start it) when it started to suck more fuel after doing that I noticed something. There is a gasket under a rubber orifice that where the carb mounts to the bike. I noticed a stream of gas flowing down to mounting bar for the carb each time I kicked it. After seeing that I said screw it and took the carb off and the rubber gasket that sat behind that was completely screwed.  Its was so dry and brittle it was like clay. So now I have to order a gasket set for this carb.
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Robbie8919

The pictures are too large to load here. I will have to resize them or upload them some place you guys can see them if you would like.
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14Frisco

Quote from: Robbie8919 on June 06, 2014, 08:29:45 AM
The book is a Clymer. If I can just download an original please let me know where.

The OEM Service Manual is part# 99484-69, and available from dealers - listed at one online dealer for $48.  Also one on eBay for $48 right now.
http://www.harley-davidson.com/store/service-manual-pa-13-9948469--1

Panzer

 :agree:  Yes would like to see the pixs
Everyone wants to change the world but, no one wants to change the toilet paper.

Panzer

Everyone wants to change the world but, no one wants to change the toilet paper.

Panzer

Quote from: Robbie8919 on May 21, 2014, 07:32:31 AM
Hey All,
Now I have a Mikuni on it and its barking, chugging, and wanting to start each time I kick it. Keep in mind it hasn't ran in 7 years. I have been kicking it with the S&S on it for a month now and just put the Mikuni on it yesterday,

Why didn't you discover the carb. seal when you put the carb. on?
Everyone wants to change the world but, no one wants to change the toilet paper.

Robbie8919

Because the way the mount is set up you dont have to pull that part off to get the carb off. In my experience I try not to take seals on and off if its not needed. Since I didnt see how bad it was I did not know it was problematic. I am ordering the gaskets today. Sorry for the delay guys here are the pics I had mentioned and as well as some general ones of the bike.

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Robbie8919

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Robbie8919

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Robbie8919

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Robbie8919

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