Just be aware Honda is getting out of the small engine business.
And to the service manual here says the mounting and PTO screws are SAE and not metric threaded. Mounting 5/16-24 and PTO are mostly 3/8-24 with type N5 with a 7/16-20 thread. Now the rest of the screws should be metric.
IF you post the model and type code of the engine I can look up crankshaft to see if they did one with a 1.25mm thread.
Now all the clones out there we should still be to keep the OEM Honda engines provided we can find the right parts.
