ralph i would agree with you about ,all the engine instructions would be generic,,but when dealing with this particular engine,,things may be different,, such as  ,,one needs to wash out their engine prior to assembly of the reed and carb block,,and also to check all engine bolts,because they have been found to be loose,,,then some ignitions can use 2 cell lipos,,my point is this,,if instructions came in the box,,then one wouldnt have to search forums or bother the manufacturer,for info.and unfortunately everyone isnt as sure as others in their knowledge of engines,and if they are,, the manual,will reassure those that do ,and reaffirm ,what they do know,,its kinda what one would expect,with a new motor,,of course ,with my gasser experience ,i dont need an owners manual,once again when i first recieved my engine ,i did have questions,such as do i mount this thing on standoffs?or should i use hardwood blocks? i did pm tommy and explain what we are used to seeing in the box over here in america,and thats what we would expect,,i also explained that crcc pro sells engines that require assembly,and have never been pre run,and most people avoid such engines,not knowing what the end result may be,so yes i do agree with the facts ,,but lets just say mr shen  qc ,ed all outgoing engines and sent a manual ,then a lot of negative commentary would be averted,,then people dont get engines with missing carbs,poorly cast cylinders loose bolts ect,,all this needs to be caught and rejected at the factory,before it makes its way to a customer,i personally know for a fact you would never send out something in that manner,and thats all im asking,,and of course not you but ,mtengines ,my first concern as a early mt 70 owner was the plug placement,,that was addressed immediately,lets see if our other concerns get addressed.