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Author Topic: CB100 Timing Help  (Read 679 times)

Offline trek97

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Re: CB100 Timing Help
« Reply #10 on: May 13, 2018, 07:17:12 »
im just hoping im not destroying anything in the engine. I'm not sure if the fly wheel shows the retarded and advanced positions.

You can probably borrow a timing light for FREE from Autozone...etc.  And you wont have to HOPE.   ::)

Yes it shows Full advance marks.  At full advance (it should start to advance around 1500rpm and full advance closer to 3500rpm, give or take) it should fire anywhere twixed the two advance marks.

« Last Edit: May 13, 2018, 07:23:38 by trek97 »

Offline waldo101

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Re: CB100 Timing Help
« Reply #11 on: May 13, 2018, 07:45:21 »
i was wondering what those other two lines were. I will see if i can borrow a timing light from somewhere, I do have he contact plate in just the right place for it to start first kick and idle perfect. i took it up the road and up a hill and put a load on it and it pulled good and sounded like clockwork. when i first got it the bike it always wanted to bog down, maybe my cam has skipped a tooth at some point

Offline trek97

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Re: CB100 Timing Help
« Reply #12 on: May 13, 2018, 12:53:33 »
Im sure that by sheer chance you got it really close to being timed.

But yes look for the reason its not lining up closer to the mark and you may uncover more power than you got now.

Better safe than sorry.

Offline crazypj

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Re: CB100 Timing Help
« Reply #13 on: May 13, 2018, 13:42:47 »
You can kinda check full advance by lining up timing mark on generator between the advance marks then manually rotating points cam with pliers. You have to be pretty careful not to damage points cam though. Plastic coated battery terminal pliers work on the inline 4's but I've never tried them on singles
'you can take my word for it or argue until you find out I'm right'
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Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0