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2004 CR125 Ignition Timing

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cobra46

63075 cobra46 /images/default/avatar/c50.png https://www.vitalmx.com/community/cobra46,63075/all 04/10/18 1 1

Posts: 2

Joined: 4/10/2018

Location: Rocklin, CA USA

4/10/2018 6:58 AM

Hey all.

First post here. Just got done doing a bottom end on my son's bike. The service manual says to use a timing light to set the ignition timing but this has proved difficult. It's been difficult because I can't get a freaking timing light that actually works. I finally bought a light that says it works with two strokes and has a tach but it doesn't fire the light.

Anyway, a dude I work with loaned me a dial indicator and said they time kart engines with the indicator. This sounds like a great method but my service manual doesn't make any mention of this technique so I don't know how to set the stator. Anyone have any insight?

By the way, the bike runs great and we've put several hours on it with the timing set to the default position.

Thanks

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JBoneMotorworks

46785 JBoneMotorworks https://p.vitalmx.com/photos/users/46785/avatar/c50_photo_4_1428088453.jpg?1428088032 https://www.vitalmx.com/community/JBoneMotorworks,46785/all 04/03/15 18 174 3 1

Posts: 192

Joined: 4/3/2015

Location: CT, USA

4/10/2018 5:11 PM

The CR125 has a fixed timing mark on the stator plate and inner engine case. Simply line up the marks on the plate, (they may be shown as an arrow), and the engine and tighten down the plate.

Post some pics of the inside of your ignition side part- J