Checking The Autodecompressor; Checking Camshafts; Checking The Radial Clearance Of The Camshaft Bearings - KTM 450 SX ATV 2010 Repair Manual

30/ENGINE - WORK ON INDIVIDUAL PARTS

Checking the autodecompressor

19.23

Checking camshafts

19.24

Checking the radial clearance of the camshaft bearings

19.25
–
Mount screw
Guideline
Screw, camshaft gear
–
Repeat these steps for the second camshaft.
301219-11
–
Check the autodecompressor for damage.
» If there is damage or wear:
–
Change the exhaust camshaft.
–
Slide the camshaft bearing to the camshaft gear.
–
Pull lever

» If the lever does not return to its original position:
–
Change the exhaust camshaft.
301221-10
–
Check the camshaft for damage and wear.
» If there is damage or wear:
–
Change the camshaft.
–
If the surface of the cams is damaged, check the oil supply to the camshaft
and cam lever.
–
Measure the cams of the camshaft.
Camshaft - cam height
Exhaust
301250-10
Camshaft - cam height (450 SX ATV)
Intake
Camshaft - cam height (505 SX ATV)
Intake
» If the measured value does not meet specifications:
–
Change the camshaft.
–
Position the camshafts.
The valves are not activated.
–
Insert the Plastigauge clearance gauge in area
Plastigauge measuring strips (60029012000) (
301222-10
but do not tighten yet.

M10x1
away from camshaft and release it.
50 Nm lubricated with
(36.9 lbf ft) engine oil
33.10... 33.30 mm (1.3031...
1.311 in)
33.90... 34.10 mm (1.3346...
1.3425 in)
34.20... 34.40 mm (1.3465...
1.3543 in)
.

p. 230)
130