make sure battery voltage is up, put on a external battery charger if still no good volt meter across battery terminals should only have a2 to 3 volt loss when cranking if more starter could be fault.Motor can be turned by hand? if not then starter pinion could of jammed against ring gear or engine filled up with petrol ,flooded through carburator.No voltage loss across battery, cable from solenoid to starter motor faulty ,check if you have got 12v down at starter cable when cranking
Dave Fix, May 2011