Men
I am from india.
I am having a Machismo A350 2000 model with AVL engine. While going through parts catalogues, I came in some confusion about Part Numbers. Some examples are as under (catalogues pares are attached):
Stud tappet cover (Metric) 145119/a(A 350) 145119/a (350 & 500)
Tappet cover 814010 (A 350) 814010 (350 & 500)
Tappet cover gasket 500430 (A 350) 500333/b (350), 510253/b (500)
Decompressor shaft 500500 (A 350) 500335/a (350), 500500/f (500)
Decompressor lever 500503 (A 350) 500503/b (350 & 500)
Cam assembly Exhaust 500429 (A 350) 500429/e (350 & 500)
Cam assembly inlet 500428 (A 350) 500428/e (350 & 500)
Oil filter element 500613 (A 350) 500613/a (350 & 500)
What is the concept of this “a”, “b”, “c”, “d”, “e” etc in part number?
When ‘Tappet cover’ & ‘stud’ is same, how the ‘Tappet cover gasket’ & ‘Decompressor shaft ‘ are different for A350, 350 & 500?
Is the oil filter element can be fit to each other?
Besides the bore-piston & crank shaft assembly the tappet cover, decompressor shaft, decompressor lever are also a rare part for AVL engines (because they are quite cheap as and dealers are not interested to stock these 30-50 Rs parts.). I have seen many machismos with CI tappet cover, they have either lost the decompression function or converted like CI with hole in cylinder head.
Presently the parts are only available with new parts numbers like a, b, c etc and dealers says that there is no problem with these a, b, c.
Can anyone explain the mystery?
AVL engine Model details in brief are as follows for india:
Machismo A 350 Model: Year 2000 to 2003 with CDI ignition system & spacco carburetor
Machismo 350: Year 2004-2009 with TCI ignition system & BS26 series carburetor
Machismo 500: Year 2007-2009 with TCI ignition system & BS29 series carburetor