cam sensor timing issue

super-merc

Registered User
Good day all,

I am rebuilding the motor on my basket case and I guess the plastic cover (around the harmonic balancer) with the numbers on it for the cam sensor timing has been either killed in action or broken off. The insturctions for the tool used to set the cam postion sensor say to put the crank at 12deg atdc I think. How can I get this timing right if I don't have this plastic thing? Is there some way to cheat? Do I have to go and find that harmonic balancer cover to do this correctly? Thanks for your time :confused:
 
There is a pointer on the timing cover and a large groove on the balancer. The groove on the balancer is 26atdc which is where you align the crank sensor.
 
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