Question about 1979 Laverda 1000 Jota

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Non starting Jota

After the winter break my jota wont start. I'm not to good with electrics and this is what done so far. Engaged a high gear and turned over the motor by turning back wheel (incase starter was jammed) replaced Battery removed and cleaned Earth wire (copper thingy) cleaned all other bits attached to the battery checked where I can for loose wires what I have is a strong Battrery

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32 amp brand new its been on charge for about 18 hours Acid for battery was put in by a dealer all electric functions working except the starter when the starter button is pushed there is a click and I can feel movment in a solonoid in front and just above the battery (in an ally case) all nuts to starter motor removed cleaned and re tightened Fuses checked (I can only find 2) these fuses are located behind the left side of the battery in a little black cover are perhaps there more fuses which are relavent to the starter the bike is in my workshop and I cant really get a go at jumping it on my own. I did try jumping when I thought it was the battery but it wouldnt go. I thought it was due to NO charge in the battery. Try a single jump lead from the +'ve on the battery direct to the starter motor. A screwdriver across to 2 solonoid connections does the same thing but is harder to control. You need to be careful as if there is an internal short in the starter motor you can run the risk of serious burns from very large fault currents flowing. Next is the poxy short battery negative to crank case...replace with a longer one to the actual starter motor 8m/m mounting bolt ( closest 8m/m to the barrel is more neat ). Less hazerdous is to get a cheap mumtimeter and measure the voltage across the starter motor when you press the starter button some times it is just a dirty segment on the starter motor remove plugs from cylinders, load the HT leads with removed plugs, rest against engine and engage top gear. Press the starter and rotate back wheel slightly backwards ( rocking motion ) going backwards engages the jaming roller clutch to move the starter off the dirty segment if present,,,

Posted on Nov 10, 2008


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