I found this site from Volvo that has a lot of pictures,manuals and brochures of the Bolinder/Munktell engines.I have 2 single W7 models and a 20 hp E THANKS BOB....
Hi Bob, Do you still have your W7 Bolinder engine or is it engines ? , looking for someone with same to correspond with as I have recently pick up one of these all in a dismantled condition I intend to rebuild it . Graham