Here are a few tips:
1. Put 1 teaspoon mixing oil on each piston.
    Unscrew spark plug and just drop the oil in the hole.
    Before you put back the plugs start the engine a few strokes 
    so the oil goes all over.
2. Lift the back of your sled on a piece of wood or... 
   to loosen the suspension springs.
3. If you live in the country put steel wool in the exaust pipe.
   (one summer, a mouse had the good idea to nest in one of 
   my cylinders, so imagine what happened....!)
4. Have a good summer and plan next years season.
                         Jean Bouchard