Check Valve Clearance; Removal Of Cylinder Head; Disassembly Of Cylinder Head - KAYO MOTOR TT 125 Service Manual

Valve cover

Check valve clearance

Removal of cylinder head

Cap nut Cover of cylinder head
Connecting bolts for cylinder head and cylinder block

Disassembly of cylinder head

1.Remove the valve cover on both sides of the intake
and exhaust of the cylinder head;
2.After removing the valve cover, check whether the
thread is damaged and the sealing ring is damaged. If
there is damage, use new parts when reassembling.
1.Check that the magneto rotor timing mark is aligned
with the timing mark on the left front cover and that the
timing sprocket O mark is aligned with the cylinder
head timing mark.
2.The valve should have slight axial clearance, no
clearance up and down.
3.Valve clearance should be in the range 0.01-0.03mm.
The removal steps of cylinder head are as follows:
1.Remove the 4 GB/T 923/M6 cap nuts securing the
cylinder head cover;
2.Remove 3 φ 6.2× φ 13×2 iron washers and 1 φ 6.5× φ
13×2 copper washers;
3.Remove cylinder head and cylinder head gasket;
4.Remove left cylinder head cover;
5.Remove the 3 GB/T 5783/M5×12 hexagon bolts
fastening the timing driven sprocket and remove the
timing driven sprocket from the camshaft;
6.Remove 1 M6x20 bolt connecting the cylinder head
and cylinder block;
7.Remove cylinder head;
8.Remove locating pins, flanging bushings and
rectangular ring iron from A and B bolts and remove
cylinder head gaskets.