Hi Max,
Thanks for your offer. I will recheck my measurements and get back to you shortly.
Hi Ironbark,
Thanks for the suggestion of a second-hand 12HP engine. That was my backup plan.
Hi Speedy,
Thanks for your suggestion of using part numbers on my engine to identify the engine details. I had started doing that with the flywheel. I am confident that my engine is NOT a 12HP, because the flywheel is so different. When I cross-checked the flywheel part number with various engine models, I found that it was consistently used in the 25 series (10HP, 10.5HP, & 11HP). When I looked up the corresponding engine cover part numbers, there were about 5 to choose from. I will start looking up other part numbers on my engine as well.
I must be looking for an uncommon engine cover. Each engine cover I have tried consistently has the engine shaft off-centre, and towards the muffler. Therefore, I am looking for an engine cover whose opening is closer to the muffler. Has anybody come across such an engine cover?
Regards, Ross.