Originally Posted by clydeoutboards
i would hear the honda running before rulling it out, yes it is air cooled but this has been a plus and the noise never a problem when you hear other engines side by side.
I used to have a 2HP air cooled Honda and at full throttle it was at least as noisy as my 20HP Yamaha 2 stroke... ...its not a pleasant noise either - but there are some advantages for canal running such as not having to worry about weed / plastic bags blocking the cooling water intake. I imagine the plastic prob and centrifugal clutch would also go a long way to protecting the gearbox from a shopping trolley strike. On the other hand transportation / storage of 4 strokes is a pain and I found that between this and extreeme sensitivity to angle of orientation when topping up the oil (to get it level in the sight glass) it would smoke more than a 2 stoke until it had been running for a while.
The Tohatsu 9.8 is a well liked engine. The only real benefits I can see from a small 4 stroke would be: lighter weight - but the tohatsu is not that bad; better fuel economy - but its not going to be a huge difference in terms of total litres per annum, possibly less likely to foul plugs on the 4 stroke - although I think that is possibly exaggerated from the old days of premix, and "add a bit extra oil to be sure", its also not the end of the world in a canal. Does that justify it compared to having a second engine to insure, maintain, winterise, etc?