DS21 & DS21M / DS19A & DS19MA Repair Manual — Page 591

'G/307 24. Couple the gearbox to the engine. Place the dowels with their on the engine. Engage the gearbox, turning the main shaft with the starting handle socket. Fit the starter motor. Tighten the screws securing the gearbox on the engine (spanner 2431-T). The gearbox is secured to the sump by 2 screws with flats (spanner 1677-T). 25. Fit the bearing housing for the camshaft (spanner 2431-T).