[Shotimes] timing sprockets not fitting crank

[van Oss]

Clearly, your crank is too big.
VO

p.s. This pulley shouldn't *slide" on. You should expect to have to tap it 
on and I'd use lubricant.  (Those who know me need no explanation.)  It's 
supposed to be a tight fit, else prone to cancer.  As I look at the key, I 
don't see one end being different from the other, so your concern about a 
misplaced key baffles me.  I'd use a BFH and the same large socket you use 
when removing the retaining nut at the outer end of a draive shaft.  To 
facilitate removal of the timing-belt pulley, I have a piece of 1/8'' by 
1/2'' by 3'' steel, drilled with two holes spaced per the threaded holes in 
the timing pulley.  A sequence of longer, then shorter spare screws do the 
trick (from parting too many SHOs, usually timing covers).

VO

----- Original Message ----- 
I've got 3 timing belt sprockets and none seem to slide onto my crank.
Ian