Measured the engine pulley this morning;
Top:17mm
Bottom:7.5mm
Depth:16mm
So i'm guessing a "B" Pulley or the Chinese version of one.
Though its a machined pulley no a cast one as i have seen on other engines.
So it time to order a pulley, so 2, 3, or 4, grooves is the question.
leaning towards 2 or 3, can't see me needing 4 belts for 10kw drive and 5kw load.
And its not like i wont notice a broken belt, so i don't need the redundancy, that 4 will provide.
Im leaning towards two and i might use one at a later stage to run a small alternator for battery charging..