Cant get a spark from ht leads on cb250 motor bike

Have you replaced the condensor? Do the points actually spark?
Have you checked HT lead and plug cap? Remove cap and place bare end of ht lead on cylinder head so that spark can jump from core to cylinder fin, DON'T hold it there... Kick engine over and look for spark at end of HT lead

Most sun scooters have a switch under the seat in the seat bucket.it needs to be set to unlock and if it's not connected it will not spark either.

you will have to check lead to spark plug then lead to coil
if your not getting spark at plug it could be a number of things ingintion
or just a loose wire best of luck hope you solve it

Not knowing about Gilera but Some general suggestions for ignition problems control if applicable could be: a bobin(coil) sparkplug plugconnector control the gap between flywheel and ignition coil, contact points, contact breaker to mass can have a problem or even a cable,a rotor under distributor hood. or ignition not on time,
If ordering for an engine an ignition coil don't forget always to give up the serialmotor number and year of build to the seller because of marketing technical modifications can be made in the same production year of different ignition coils or flywheels and other.

http://www.cmsnl.com/yamaha-ct1-1969_model8325/partslist/
If the coil only has one wire (apart from HT lead to sparkplug) it will plug into the loom to the same color wire with the appropriate male or female connection. The hard mounting of the coil to the frame provides the ground in this case. This provides the continuity of the circuit from the contact breaker (points) behind the flywheel magneto. The site above has all the sections of your bike in exploded views with all part names. Cheers.

If you are sitting on the bike the left coil has an orange/white wire on the top and a white wire on the bottom.The HT leads go to plugs 1 4.The right coil has an orange/white lead on the top and a black/yellow wire on the bottom.The other HT leads go to 2 3.It doesnt matter which HT lead goes to either plug as thboth HT leads on the same coil fire at the same time (wasted spark system).Hope this has helped or you have already sorted it out.

Hi
With Ignition switch off :-
1st Check for bad connections, broken/crushed wires, continuity & resistance between the cap, HT lead, coil, ignition coil primary wires
2nd Disconnect the CDI unit from its connector & check for the same between the loom side of the connector back to the coil
3rd Check coil is earthed

If all OK suspect the CDI unit but double check everything first( there are some more checks as well), as these are very expensive

Ride safe
Bike-Doc

Please rate this solution well if it has helped !!
Any comments welcome

did you try testing the ht leads by putting a plug in it and touching it against metal you should see it sparking a bright blue sparks do this one at a time leave the otheir plugs in the bike and extract them one at a time having the bike in nuetral push the start button if all spark a strong spark your ht leads are fine if your bike has coils this will show the problem or it could be a rectifier ,or your carbs need a good cleaning and might need to be balanced hope this helps

remove the alternater cover and check all the wires are intact behind there

Wrap the wire round the Ht lead two or three times, it induces a signal to the Rev Counte, the wire does not have to be bare or connected to anyting other than wrapped around the lead..