Hello Everyone,
I have downloaded the "Kirby_HK_SB_Parts_Manual" from another thread but am left wondering if this covers the HK25, HK30 or both?
So what are the differences between the two engines? Is the same piston, connecting rod and crank used in both? Is the carby the same?
The only obvious difference I have seen is that all HK30 engines I have seen have a fuel primer and have been fitted with the smaller tank.
I find it interesting that both the HK25 and 30 seem to have the same displacement (bore and stroke are the same).
There must be some differences between the two engines for the HK30 to have a higher output (cam, compression ratio, carby).
I am trying to source parts to rebuild a HK25 and have found a few guys who have some parts however I need part numbers to confirm suitability for the HK25.
I tried cross referencing to a Tecumseh H25 but there was so many different serial breaks that didn't line up to any numbers on my data tag that I didn't know where to start.
Any help would be appreciated