c . S PA R E PA R T S O F E N G I N E
Please read the following instruction carefully, and ensure spare parts in right position. Otherwise engine
cannot perform.
1. All marks of the following parts should be towards combined surface of left crankcase and
transmission case:Output shaft of left crankcase, middle shaft, output shaft bering
6203,6202,6204, and output shaft of transmission case, middle shaft, output shaft bearing
6004,6002,6301.
2. The side of driven wheel disc rolling needle bearing with mark needs to be toward seeable direction,
and the side of ball bearing with mark needs to be towards clip.
3. The convex prick side of the gasket between driver wheel disc and driven wheel disc is towards
locknut.
4. The side of kick-starter gear and transition gear with mark is towards left cover.
5. Chain guiding groove is towards chain, and column rod of chain guiding part is not higher than
the surface of cylinder.
6. White piston circle is the first one, black piston circle is the second one; hatches
of circle 1 and circle 3 are towards exhaust port, hatches of circle 2 and circle
4 are towards inlet port; the side with English letter is towards the top of piston.
7. “IN” mark on piston is towards carburetor side.
8. Valve spring (dense end) is towards valve pipe.
9. The side of camshaft bearing 6002 with mark is towards cam.
10. The side of oil pump with letters is towards outside.
The side of left and right crankcase bush with “W” mark is towards the reverse of combined surface
of left and right crankcase
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