I remember this race very well .. blown gear case in one heat..changed my gear case between the heats but was not quite ready in time for the next heat ..
The organizers delayed the start a few minutes..so I made it out to the start.  That made my friend Bosse little upset .. if I remember correctly ..!!
I ended up winning the race..4 heat and three counts.!!

Jepp..That’s me (second picture) checking out the engine..was not sure if it was the power head or year case. I was lucky..it was the gear case..you are not allowed to change power head.

Sorry for Swedish in the newspaper..and Thanks to Bengt Martinsson for the newspaper clip..