Hi Grumpy , it does have kirby/tecumseh written on it . So it's a 10 hp, I guessed that but I wasn't sure . I love looking at these older machines and when I get a few other projects out the way I will have a go at fixing this one. My mate would like to put a new motor on it or a a good second hand one on his slasher so now he can look for around the ten hp .
I tried to edit the post but I was to late to do so , sorry for that. Thankyou