Service Manual

Engine Maintenance
2-12 627333-A
Valve Lash Check
An adjustment is not necessary if the measurement of
the valve lash is in the rang shown in table below
NOTE: TC Exhaust stroke is 360° from Compression
stroke.
NOTE: The no. 1 cylinder is at the front of the engine
(see picture below).
FIG. 1: Cylinder and valve location
a. Exhaust Valves;
b. Inlet Valves.
If the measurement is not within this range, an
adjustment is necessary. Refer to the chapter “Valve
Lash Adjustment” for the proper procedure.
Valve Lash Adjustment
Use the following procedure to adjust the valve lash.
1. Ensure that the No. 1 pistion is at the TDC (Top
Dead Center) position on the compression stroke;
NOTE: To get No. 1 pistion in top center position. Turn
engine in the direction it runs untill all valves
from pistion 1 are closed. Until TDC (Top Dead
Center) is reached.
When the No. 1 pistion is at TDC. Install the timing
bolt in the flywheel.
2. Adjust the valve lash according to the table above;
a. Lightly tap the rocker arm with a soft mallet.
This will ensure that the lifter roller seats
against the camshafts base circle;
b. Loosen the adjustment locknut;
Inlet Valves Exhaust Valves
Valve Lash (stopped Engine) 0,38 ± 0,08 mm
(0,015 ± 0,003 inch)
0,64 ± 0,08 mm
(0,025 ± 0,003 inch)
TC Compression Stroke 1-2-4 1-3-5
TC Exhaust Stroke 3-5-6 2-4-6
Firing Order 1-5-3-6-2-4
FIG. 1
Q000060S
A
B
TC Exhaust Stroke Inlet Valves Exhaust Valves
Valve Lash 0.38 ± 0.08 mm
(0.015 ± 0.003 inch)
0.64 ± 0.08 mm
(0.025 ± 0.003 inch)
Cylinders 1-2-4 1-3-5