● After WEVB system is used, the adjustment method of exhaust
valve clearance is as follows (see Fig. 2 for part serial numbers)
● The cylinder piston to be adjusted is located on the top dead center
of the compression travel.
● As shown in Fig. 2, loosen No. 2 adjusting bolt assembly. In case
that the oil seal plane of exhaust valve rocker arm is not pressed, rst by
using No. 10 valve clearance adjusting.
1. Valve clearance adjusting nut 2. Regulating bolt assembly
3. Exhaust valve rocker arm assembly 4. Steel ball 5. Valve
rocker arm piston 6. Rocker arm piston spring 7. Needle 8.
Ball valve spring 9. Valve rocker arm seat assembly 10. Valve
clearance adjusting screw 11. Hexagonal bolt 12. Support arm
Fig. 2 Total Valve
Clearance of Cold-State
Exhaust Valve 0.4 mm
Fig. 3 End Valve
Clearance of Cold-State
Exhaust Valve 0.25 mm
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