Valve Clearance Check; Checking Cylinder “1” Valve Clearance; Valve Clearance Measurement; Checking Cylinder “2” Valve Clearance - Husqvarna NUDA 900 R 2012 Workshop Manual

ENGINE SETTINGS AND ADJUSTMENTS
NUDA 900 2012/2013 - NUDA 900 R 2012/2013
H10911
H10182
H10912

VALVE CLEARANCE CHECK

Remove the coil / spark plug cap and the head cover as described in chapter
"F1".
Checking cylinder "1" valve clearance:
Turn the crankshaft in the normal direction of engine rota -
tion until cylinder "1" ("1"=> clutch side) is at power stroke TDC.
At power stroke TDC, the cylinder 1 cams of both the intake and exhaust camshafts
must face upwards and be at the same angle relative to the upper face of the head.
In this position, check the valve clearance between cam base circle and the
rocker arm.
NOTE: The crankshaft cannot be locked in this position.

Valve clearance measurement

Use a feeler gauge to measure valve clearance between the cam and the rocker
arm.
Note down the measurements on a measurement sheet.
Technical specifications
Intake valve clearance with cold engine
max. 35 °C
Exhaust valve clear- with cold engine
ance max. 35 °C
Checking cylinder "2" valve clearance:
Turn the crankshaft in the normal direction of engine rota-
tion until cylinder "2" ("2"=> magnet side) is at power stroke TDC.
At power stroke TDC, the cylinder 2 cams of both the intake and exhaust camshafts
must face upwards and be at the same angle relative to the upper face of the head.
In this position, check the valve clearance between cam base circle and the
rocker arm.
NOTE: The crankshaft cannot be locked in this position.
If the valves do not lie within the correct tolerance, correct clearance must be
restored by replacing the half-balls.
F.3
0,23 ÷ 0,33 mm
0,0091 ÷ 0,013 in.
0,30 ÷ 0,41 mm
0,0118 ÷ 0,0161 in.
Workshop Manual Ed. 11-2011