1969 XLCH spark control spiral

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1969 XLCH spark control spiral

Postby ThumpStreet » Sat Sep 19, 2015 9:11 am

Anybody out there have a correct spark control spiral for a 1969 XLCH?I believe the part number is 56220-53.The machine as received has the l/h grip being turned forward to advance the magneto.Don't think that is correct per manual.I haven't looked that deep yet so any insights to the actual problem,if it's not a incorrect part, will be much appreciated.Thanks,Pete
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Re: 1969 XLCH spark control spiral

Postby strong56KH » Sat Sep 19, 2015 10:15 am

For the XLCH, starting in 1965, I think the left spiral had the part number 56220-58 and was a "pull type" vs. a "push type" on earlier models.
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Re: 1969 XLCH spark control spiral

Postby ThumpStreet » Sat Sep 19, 2015 4:25 pm

Thanks Strong 56KH! Parts manual is very confusing.It states item #47 56220-53 (2) SLEEVE handlebar grip...54 to71 KH,XL,XLH,XLCH. The item#48 is 56220-58 (2) Sleeve handlebar grip...72,73 XLH,XLCH.I agree 100% the left spiral should be a pull type.So in conclusion,what's needed is a -53 for the throttle and a -58 for the spark control.I 'm guessing the 2 in the parenthesis is a typo.Now the big question, :shock: anybody know where I can find the right spiral for the spark?
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Re: 1969 XLCH spark control spiral

Postby Hammie13 » Sat Sep 19, 2015 4:58 pm

There is a spiral on ebay now for a K/sportster,check under K model searches in the vintage parts section.
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Re: 1969 XLCH spark control spiral

Postby strong56KH » Sat Sep 19, 2015 6:58 pm

I would first go to or call your local Harley dealer and have them search their nationwide parts network. It's best to pay extra for original parts. I have found some parts for my KH this way. It amazes me what's still out there. V-twin makes a reproduction of this part but I would not recommend buying their spirals. Some years back I bought several from them and the spot welds promptly broke after installing them.
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Re: 1969 XLCH spark control spiral

Postby mikeslemmon » Sat Sep 19, 2015 8:03 pm

par
t # 56220 58 {push if it"s for a mag{
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Re: 1969 XLCH spark control spiral

Postby thefrenchowl » Sat Sep 19, 2015 8:15 pm

I personnally set all the bikes I have (when they have advance retard...) with full advance being when the lever or spiral is closed... Since retard's used only for starting, I don't see why I should hold the bloody thing open all the time to get full advance when I ride ; - ) ...
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Re: 1969 XLCH spark control spiral

Postby mikeslemmon » Sat Sep 19, 2015 9:26 pm

2nd try push for advance pull for retard opposite of throttle
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Re: 1969 XLCH spark control spiral

Postby DaveC » Sun Sep 20, 2015 11:48 am

Having several original magneto model XLCH's, both grips "pull" (rotate toward you) to advance throttle and spark. This requires a "push" grip on the throttle and, because its opposite, a "pull" grip on the magneto advance (left) grip.
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Re: 1969 XLCH spark control spiral

Postby sportsterpaul » Sun Sep 20, 2015 2:03 pm

OK, poor Paul is confused again. I have always used the words "push" and "pull" to refer to what the cable does when you rotate the grip from its initial position. In this regard, that would be CCW (looking at the end) for the right throttle and CW for the left spark advance grip. By definition, if you switch the same grip from the right to the left, it changes from a pull system to a push system or vice versa.

Now my 1962 just happens to have a set of grips, that looks later model, just plain smooth black with a little groove at the end. The RH throttle is a pull type. That suits me just fine, since I have a 1976 Keihin carb on the bike, and it need to pull to open the butterfly. Now, I am told the only magneto bike that had spark advance is 1967 to 1969, since it uses the 29603-67 adapter plate ring down at the base of the mag. But now when I look at the 1971 parts book, I see the arm that rotates the mag is 29607-65 and is for 1965 to 1969. And yikes, there is another ring down at the base that is 29604-65A, and that is used for 1965 and 1966. I would love to know the difference between those two rings, but in any event, to me it looks to me that the only mags that rotate are 1965 to 1969.

So my question is when the carb went from push to pull, and when did the auto-advance circuit breaker come in? I see the flyweights start with a -64 part number but the parts book calls out usage from 1965 to 1970 across two part numbers. The auto-advance shaft however, looks to be 1965 to 1970, across three part numbers. The accursed cone ignition came in 1971.

OK, so to me this means that the mag was fixed from 1958 to 1964. The mag moved from 1965 to 1969. I assume the mag was not offered on 1970 bikes and cone ignition came in 1971. The circuit breaker moved from 1952 to 1970. Does this mean any handle bar set that has a fixed LH grip was for a 1958 to 1964 XLCH?

So once we figure out when the carb went from push to pull, it would nice to know if the circuit breaker and the mag both did advance and retard for the same direction, in other words, is pull advance on a mag and advance on a circuit breaker?

I put the auto-advance circuit breaker on my 1962 so I don't care, but I did have it set up with a mag at first. Let me go look, yeah, the LH spark advance is also a pull, when I rotate the grip CW the cable pulls.

BTW, I replaced the steel wire in the throttle side with a thin wire rope. That way I clamp on a little barrel to the wire rope and it pops into the 1976 Keihin like it belongs. The flexibly and years of oily life are so nice, that if I let go of the throttle at freeway speeds, the spring in the carb is enough to very slowly close the throttle.

I love how Patrick just uses the grip spiral that makes the bike work the way he wants. So is the OP trying to be "correct" or does he just want the mag to rotate when he twists the left grip?
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