diymirage;
I just adjust the valve lash and I noticed another "clue" said
Putting pressure on the belt and turning the fan was EXACTLY how I used to set the dual points on my Commando 273. Very precise method to get the points rub block on the highest point of the distributor cam.
When I got my "new" 64 Valiant I tried the same thing and the 225 wouldn't budge a single degree so now I'm jealous.
Now that I think of it.....what is the first thing it says in the lawn mower owner's manual when removing the blade? A: Disconnect the spark plug wire. Oh well, I still have all ten digits.