Author Topic: Idiot timing question  (Read 1241 times)

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Offline diloret2

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Idiot timing question
« on: June 19, 2015, 04:45:33 AM »
I feel stupid for even asking this, I've searched and read the manual 50 times, but have still managed to either miss something or confuse myself.

When doing static timing on a 75 CB550F, in the service manual it says if the light comes on when the F and Timing mark line up you're good. If it needs adjustment, line up the marks and adjust the plate until the light goes out? Doesn't that contradict the first statement of if the light is on its good? I'm sure it's a fairly obvious answer, but I'm clearly missing something and have probably more thoroughly confused myself by over thinking. So if the light comes on when the F lines up with the mark, I'm good? Or do I adjust it so it goes out?

Again, sorry for the stupid question,  but I'm confused.
'64 C105T 'Trail 55'
'08 Speed Triple
'10 Vespa LX150

Past Bikes:
'75 CB550F
'76 CJ360T
'77 CT90
'80 KZ1000J
'82 CB750F
'01 VFR800
'03 919
'03 Monster S2R
'05 SV650S
'15 Monster 821

Offline Deltarider

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Re: Idiot timing question
« Reply #1 on: June 19, 2015, 04:49:46 AM »
Quote
So if the light comes on when the F lines up with the mark, I'm good?
Yes.
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Offline 2wheels

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Re: Idiot timing question
« Reply #2 on: June 19, 2015, 08:11:32 AM »
The F mark is when the transition happens.  That is what they are trying to say.  Maybe you are trying to be a bit to literal.

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Offline diloret2

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Re: Idiot timing question
« Reply #3 on: June 19, 2015, 06:03:48 PM »
So my bike was running poorly on the highway, so I assumed timing. Bought new points anyways because, well, why not. Glad I did because it ended up not being a timing issue; on the 2-3 point, the little plastic bumper thing that rides on the crank lobe was actually loose at the little rivet that attached it to the point.  So basically, it was kinda just floating and sometimes closing and sometimes open. Replaced both points, runs beautifully again! So irritating when it's something so trivial and tiny, but better than something more laborious!
'64 C105T 'Trail 55'
'08 Speed Triple
'10 Vespa LX150

Past Bikes:
'75 CB550F
'76 CJ360T
'77 CT90
'80 KZ1000J
'82 CB750F
'01 VFR800
'03 919
'03 Monster S2R
'05 SV650S
'15 Monster 821

Offline tlbranth

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Re: Idiot timing question
« Reply #4 on: June 19, 2015, 06:17:28 PM »
Dilo - the engine turns clockwise. You want the points to just begin to open when the timing mark reaches "F". The light goes on when the points just open. Soooooo If you're at the timing mark and the light is ON already, you need to move the points clockwise, 'til the light just goes OFF. If the light is not on yet, You need to move the points counter-clockwise 'til the light just goes ON.
Both of those spots are the same. It's the transition from closed to open.
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1970 CB750 K0
1975 GL1000
1999 GL1500
2002 VT750-CDA ACE - Momma's bike
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Offline Deltarider

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Re: Idiot timing question
« Reply #5 on: June 19, 2015, 11:25:56 PM »
Quote
So my bike was running poorly on the highway, so I assumed timing. Bought new points anyways because, well, why not. Glad I did because it ended up not being a timing issue; on the 2-3 point, the little plastic bumper thing that rides on the crank lobe was actually loose at the little rivet that attached it to the point.  So basically, it was kinda just floating and sometimes closing and sometimes open. Replaced both points, runs beautifully again! So irritating when it's something so trivial and tiny, but better than something more laborious!
What brand breakerpoints was that?
CB500K2-ED Excel black
"There is enough for everyone's need but not enough for anybody's greed."

Offline diloret2

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Re: Idiot timing question
« Reply #6 on: June 20, 2015, 04:47:10 AM »
I believe they said TEC on them?
'64 C105T 'Trail 55'
'08 Speed Triple
'10 Vespa LX150

Past Bikes:
'75 CB550F
'76 CJ360T
'77 CT90
'80 KZ1000J
'82 CB750F
'01 VFR800
'03 919
'03 Monster S2R
'05 SV650S
'15 Monster 821

Offline jonda500

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Re: Idiot timing question
« Reply #7 on: June 20, 2015, 05:05:11 AM »
I am running the cheap as piss daiichi points that come with the plate and condensers all ready to go for around $15. I have over 900 miles on them and they haven't failed yet - touchwood!
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline Deltarider

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Re: Idiot timing question
« Reply #8 on: June 20, 2015, 06:38:34 AM »
Quote
I am running the cheap as piss daiichi points that come with the plate and condensers all ready to go for around $15. I have over 900 miles on them and they haven't failed yet - touchwood!
I wouldn't be surprised if there are Daiichi breakerpoints and counterfeit Daiichi breakerpoints. Allthough I myself still run the TEC points, Daiichi points are traded here by the thousands and sofar I haven't heard/read of too many problems.
CB500K2-ED Excel black
"There is enough for everyone's need but not enough for anybody's greed."

Offline alacrity

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Re: Idiot timing question
« Reply #9 on: June 21, 2015, 12:22:38 AM »
Do a search about the daichi points. There are myriad complaints and problems


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I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.

Offline Deltarider

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Re: Idiot timing question
« Reply #10 on: June 21, 2015, 12:54:27 AM »
Quote
Do a search about the daichi points. There are myriad complaints and problems
I know but please read what I wrote. I have the impression quite some counterfeit products reach the US market. Even in the aviation industry where every part has it's number and is documented counterfeit products nevertheless are marketed. In this forum I remember having read about counterfeit NGK sparkplugs. Haven't heard of those here. Again Daiichi breakerpoints are traded by practically all SOHC parts traders here. I just wonder. I myself have nothing to complain about my TEC points so I stick with them.
« Last Edit: June 21, 2015, 02:59:40 AM by Deltarider »
CB500K2-ED Excel black
"There is enough for everyone's need but not enough for anybody's greed."