hi,
ok, for starters, changing parts is not the problem for you.. sometimes it takes that but somethimes no.. this is one of the /$%$/? times you need to find the problem
firrt thing, is there any power comin from the generator/alternator ? when you crank it, by corde, assuming you have no electric starter, does your light come on momentarily.it should.
secondly,well i dont know about your CDI box but there should be atlest 5 wires
2 from the alternator/generator..if A/C power comes from it the box should rectify it ( convert it) to D/C power.. same as a battery voltage, with a positive and a negative. i dontknow how much knowledge you have about electricity so im gonna try to be as explicit as i can.
ok so we get 2 wires from the alternator to the cdi
2 from the CDI to the coils.. and out of the coils to the chassis ( grounded
1 from the CDI to the chassis
and 1 or 2 to the ignition..this is the signal for the box to know that when you crank it it doesn't start without a key.. otherwise what would be the point
your gonna need a wiring diagram of the seld for this.
now you need to test / find the wires between the alternator to the CDI box..this is very neded otherwise if theres no power to the CDI = no spark
i don't know about you buy there should be a plug or something in order to change the CDI right? well its from there you should do your testing with a volt meter.
next ,if you have power to the CDI test out where the coils(dunno if ya got one or two) have 2 wires..i ya test for contuinity ( beeping when you touch both red and black wires of the voltmeter) there should be one of those wires that go from the coil to the ground and the other to the CDI. coils work the following way: you put 12 volts in them and nothing happens. if you stop putting 12 volts in them, you get a spark in the cylinder.
so when you crank it you should see something.. not necesarily 12 volts but something.
if you get voltage there and you are positive that the coils are well grounded to the chassis by the metallic part on them and by the wire that goes to the chassis as well..
next you could check if you have 12 volt by testing what come out or in the resistor for the hand warmers while you crank it..
check out if you got voltage coming in to the ignition and going back to the CDI.
oh and test out every wire from the CDI to the ignition if it has a ground..if it's in contact with the chassis it surely wont ive you spark coze the CDI will think it's in OFF postion
do the same for the wires from the CDI to the coils and check out if you have something that came in contact with the wires.. those old sleds can have something rubbing on the wire abnd make contact witht eh chassis wich is dreadful to find
Fr0sT