Today was the first day working on the DB2 since I got it home. First thing was to mount the plastic feet on the paddock stand. The idea was to make it easy to slide the bike when on the stand, and it worked as intended.
Second I tried to find out why the starter hardly manages to crank the engine over. I changed all the battery leads and tried with a new charged battery, but still no improvement. I also by-passed the starter relay without any change. When connecting another battery in parallel the engine cranks but slow.
When engaging the starter I measured about 6V and 35A at the starter terminal to engine ground. According to the workshop manual the starter has a power of 700W. 6*35 makes 210W so obviously we’re missing some power.
As I see it there are three possibile faults:
1) Grounding of the starter is insufficient (seems unlikely)
2) The starter itself is faulty
3) The battery is faulty
I will recharge the battery and try to connect a jump starting cable from the battery directly to the starter to see if that helps. I’ll also try with one of the Yuasa batteries for our Ducatis to see if that helps. The battery in the DB2 is a low quality brand, so maybe it just can’t give enough current.
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