Snowmobile Arctic Cat (2007 year). Manual - part 13

2-37

2

10. Using a 7/8 in. wrench, remove the oxygen sen-

sor; then remove the four cap screws (five cap

screws on the turbo models) securing the heat

shield. Remove the shield.

„ NOTE: On turbo models, remove the turbo (see
Section 3).

AO269

11. Remove the two cap screws and four lock nuts

securing the exhaust manifold to the cylinder

head.

AO268

12. Loosen the 8 mm cap screw and move the alter-

nator forward to allow the engine belt to be

removed; then remove the engine belt and the 8

mm cap screw.

AO207

13. Remove the lower mounting cap screw; then

remove the alternator.

14. Remove the water pump; then remove the hous-

ing. Account for an O-ring.

AO208

AO278A

15. Remove the alternator adjustment bracket.

MD1615

16. Remove the oil pressure sensor only if replacing

is necessary.

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MD1483

„ NOTE: Unless the oil pressure sensor has failed,
replacement is not necessary.

17. Remove the four engine mount brackets.

18. Remove the thermostat outlet pipe and thermo-

stat.

MD1610

MD1609

19. Remove the thermostat housing with the water

temperature sensor.

MD1472

20. Remove the starter mounting plate and ring gear

shield.

21. Remove the six cap screws securing the ring

gear and PTO adapter; then remove the ring

gear,  washer, and PTO adapter. 

MD1739

MD1611

22. Remove the crankshaft pulley cap screw; then

remove the crankshaft pulley.

„ NOTE: The crankshaft pulley shares the same
key used by the crankshaft timing chain sprocket.
The key will be removed when the crankshaft tim-
ing chain sprocket is removed.

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2

23. Remove the oil pan cap screws and flange nuts.

„ NOTE: A carefully placed strike with a rubber/
plastic hammer may be necessary to break the
sealant.

MD1491

24. Remove the three cap screws securing the oil

pump strainer to the engine block. Account for

the oil pump strainer O-ring.

AO209

AO210

25. Remove the valve cover. Account for one outer

gasket and three inner gaskets.

MD1458

26. Remove the intake cam timing sensor.

MD1477

27. Remove the timing chain cover cap screws and

timing chain cover.

„ NOTE: Note the position of the alternator adjust-
ment bracket, wiring harness tab, and intake cam
timing sensor for assembling purposes.

MD1490

28. Remove the timing chain tensioner guide

bracket cap screws,  timing chain guide cap

screws, and the timing chain tensioner pivot cap

screw; then remove the timing chain tensioner

guide bracket, timing chain tensioner, and tim-

ing chain guide.

! CAUTION

Do not drive any tool between the oil pan and engine
block gasket surfaces. Damage to the sealing sur-
faces will result.

2-40

MD1497

29. Remove the timing chain tensioner cap screws

and the timing chain guide.

30. Remove the two cap screws securing the timing

chain tensioner plunger; then remove the

plunger.

MD1518

31. To remove the timing chain, first remove the

crankshaft timing sprocket; then remove the

timing chain from the camshaft sprockets.

MD1514

MD1515

„ NOTE: Because the intake and exhaust cam-
shafts and all camshaft caps are unique, it is rec-
ommended that the technician make note of the
location for assembling purposes.

32. Remove the camshaft cap retaining cap screws

and camshaft caps; then remove the camshafts.

Account for the dowel pins.

MD1522

33. Starting with the inside rows using a 10 mm 12

point socket, remove the eight cylinder head cap

screws; then remove the cylinder head. Account

for the two dowel pins and discard the gasket.

„ NOTE: Always install a new head gasket.