This is a 1966 Bolt-Up,r which saw an increase in the number manfactured with 350 bikes being build, after 125 and 200 were shipped in 1964 and 1965. It has Husqvarna forks, rather than the earlier Norton Roadholders, which were build from Betor tubes sent from Spain. Engine is highly successful 4 speed with a smaller top end.
Bike was difficult to start and inspection showed compression was low and that the piston could basically move a lot back to front in the barrel. Time for a replacement piston and a rebore. Obtained a new-old-stock West German made piston from Jef Bens and got Roger to do the rebore on the barrel, all of which went to plan.