Heater Box Flaps, 25, 36 and 40hp Engines
Note: 36hp used two different flaps depending on the connecting rod length. Compare yours to the pictures shown for each part.
Left, 25hp, early 36hp (we think sometime in 1958)
Right, 25hp, early 36hp (we think sometime in 1958)
Left, later 36hp
Right, later 36hp
Left, 40hp
Right, 40hp