1969 CT70 spark/timing

The 208

Member
So, I've got a 1969 CT 70 and a 1974 CT 90. They've been sitting in a shed " for decades" the guy said. LOL On the 90 the tank was dry and really clean. So, I cleaned the carb, fresh fuel and a new battery and air filter, runs great. Changed the oil too. So, the 70, the last reg on the plate is 1984! Both bikes are in really good shape, I might add. The 70 had the flywheel missing. The stator, points, cond, all that is there. I got a new used flywheel, and cleaned up the ignition parts, put a new battery in it but I don't get any spark. The horn works with the key off and only if I touch the ignition switch to the bike ( I have it loose to check the wire connections). I get power to the tail/brake light socket. Not sure about the headlight yet. These 6v/ points/condenser systems are a bit foreign to me. I'm not sure where to look next. I did check the plug wire connection. Maybe test the coil next?
Thanks, T2

Update. I replaced the stator assembly with a rebuild kit,, it included new points and condenser. No spark still. So,at then end of my rope, I went thru the entire wiring harness checking for continuity, broken wires, loose connections, etc. What I did find was on the 4 prong plug off of the battery was a black "jumper" wire. It lined up with the blue wire out the other side. That didn't look right so I switched it. I then cleaned up the flywheel really good, double checked the points, wires and the points gap carefully and boom it's got spark!!! Wooh! However I still can't get it to start. It has a new plug, compression is 120-130psi, clean carb and fresh fuel. I'm not sure where to go next. IS there a timing issue/ adjustment on these? I'm not very familiar with these points/ 6v systems.
 

lukelaw1

Active Member
yes there is ignition timing on these bikes. you want the points to just start to open at the "F" mark on the flywheel to the notch mark in the case. There might be a good youtube video of points adjustment. some guys set the gap between the point at .016 with a feeler gauge with the flywheel "T" mark at the case notch. I personally set close by eye, get bike running then use an automotive timing light to fine tune.
 

The 208

Member
Ok thanks. I will check into that. Probably later today. I'll report back.

yes there is ignition timing on these bikes. you want the points to just start to open at the "F" mark on the flywheel to the notch mark in the case. There might be a good youtube video of points adjustment. some guys set the gap between the point at .016 with a feeler gauge with the flywheel "T" mark at the case notch. I personally set close by eye, get bike running then use an automotive timing light to fine tune.
 

The 208

Member
Woohoo! She runs! I finally got the little bike today. I carefully set the points gap to .016 and it fired right up. It's blowing a little smoke, but it went away. I think that was from me squirting a bit of oil into the cylinder when I checked the compression. Thanks for help!!!!
20211122_171546.jpg

yes there is ignition timing on these bikes. you want the points to just start to open at the "F" mark on the flywheel to the notch mark in the case. There might be a good youtube video of points adjustment. some guys set the gap between the point at .016 with a feeler gauge with the flywheel "T" mark at the case notch. I personally set close by eye, get bike running then use an automotive timing light to fine tune.
 
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