This may be a stupid question but I'm going to replace the drive chain and have heard different opinions. Is it necessary and/or advisable to replace the sprockets when replacing the chain. If so, is this a major job?
Thanks in advance for advice.

 

yiur sig is a 54 pan and you have 48 pan but they are almost the same -- but you left no idea what it is you need them for -- sooo how diff it is to do what ever it is / is not easy

 

Sorry for not being clear. My question was is it necessary to replace the counter sprocket on the tranny and the rear sprocket when you replace the drive chain? The 2nd part of the question is how difficult a job is it to replace those 2 sprockets.
Thanks for response.

 

the sprockets teeth should be straight no bending in one direction if they are straight than ( no leave them ) if they have a bend they will wreck the new chain in no time

to change the rear is a thing, to make it as original you will need special tools -- some weld on a new sprocket to the drum BUT than its junk next time as cutting it off and welding it again you will worp it good -- the front sprocket you need a special 1 7/16 socket that is very deep we made ours out of 2 sockets 35 years ago, when that stuff was cheap not now -- jz

 

Thanks JZ. The teeth on both sprockets look good and straight. I had read somewhere that the chain and sprockets should be replaced as a set. The chain should be replaced as it has tight and loose spots. I just didn't know what was involved in replacing the sprockets. Now I know that they're OK and above my pay grade to replace.
Thanks for your help.

 

by the nature of of centers being machined on different machine equiptment at different times by different people you have indifferences -- sooo the chain will always have a tight and loose spots - how we determine the wear is to remove the chain place it flat on a table - pull it from both ends tight / than mark the end locations / than push the ends in lightly as not to pop the center out - if the distance is 1/2 of a link the chain is junk -- jz

 

Thanks JZ. I've already ordered a new chain. I'll check the old one as you suggest but I'm sure it's bad. The standard chain is 102 links, mine is 100. Is that common?

 

yea you have the low speed front sprocket on it 22 teeth soo 100 is the number

 

Thanks for the help JZ. You're a great source of information. That's what makes this forum what it is.