Snowmobile fuel tank

1. A snowmobile comprising:

a frame having a tunnel;

an engine supported by the frame;

at least one ski connected to the frame;

a drive track operatively connected to the engine and disposed at least in part below the tunnel; and

a fuel tank connected to a top of the tunnel, the fuel tank defining a passage extending therethrough from a top of the fuel tank to a bottom of the fuel tank, the passage being adapted for receiving a battery therein.

2. The snowmobile of claim 1 , further comprising the battery disposed in the passage.

3. The snowmobile of claim 2 , further comprising a seat connected to the top of the fuel tank.

4. The snowmobile of claim 3 , wherein the passage is disposed rearward of the seat.

5. The snowmobile of claim 2 , wherein the battery is connected to the tunnel.

6. The snowmobile of claim 5 , further comprising a bracket disposed at least in part in the passage and connected to the tunnel;

wherein the battery is connected to the tunnel via the bracket.

7. The snowmobile of claim 6 , wherein the bracket extends in part under the battery; and

further comprising a battery support platform disposed in the passage between the battery and the bracket.

8. The snowmobile of claim 7 , wherein the battery support platform rests on the top of the tunnel.

9. The snowmobile of claim 7 , wherein the fuel tank defines tabs extending inwardly in the passage; and

wherein the tabs are disposed between the battery support platform and the top of the tunnel.

10. The snowmobile of claim 7 , wherein the battery support platform has at least one vertically extending tab abutting a side of the battery.

11. The snowmobile of claim 2 , further comprising a battery support platform disposed in the passage between the battery and the top of the tunnel.

12. The snowmobile of claim 11 , wherein the battery support platform rests on the top of the tunnel.

13. The snowmobile of claim 11 , wherein the fuel tank defines tabs extending inwardly in the passage; and

wherein the tabs are disposed between the battery support platform and the top of the tunnel.

14. The snowmobile of claim 11 , further comprising electrical cables connected to the battery;

wherein the passage is a first passage; and

wherein the electrical cables pass through a second passage defined between the battery support platform and a wall of the fuel tank defining the first passage.

15. The snowmobile of claim 11 , wherein the battery support platform has at least one vertically extending tab abutting a side of the battery.

16. The snowmobile of claim 2 , further comprising electrical cables connected to the battery;

wherein the passage is a first passage; and

wherein the electrical cables pass through a second passage defined between the top of the tunnel and a bottom of the fuel tank.

17. The snowmobile of claim 1 , further comprising a cover selectively connected to the fuel tank for closing a top of the passage.

18. The snowmobile of claim 17 , wherein the fuel tank defines at least in part at least one groove;

wherein the cover has at least one tongue; and

wherein the at least one tongue is disposed in the at least one groove when the cover is connected to the fuel tank for closing the top of the passage.

19. The snowmobile of claim 17 , further comprising at least one fastener fastening the cover to the fuel tank when the cover is connected to the fuel tank for closing the top of the passage.

20. The snowmobile of claim 19 , wherein the at least one fastener is at least one toolless fastener.