I checked the dealer records on my 90 Q and the guides have never been replaced to their knowledge.
My reason(s) for not replacing them up till now are mainly ignorance (I didn't know until NICO told me); and then conscience (should I fix a Q for more than it's worth); and then reluctance (can I somehow fix it myself).
I think I already know the answer, but, it would be nice if you confirmed the following:
1. How can you tell if it's needed?(I think the answer is you have to open the engine to take a look to see if the previous owner already did it).
2. If the engine has to be opened, is there a step-by-step procedure (preferably with photos accompanying each step) that shows us how to do it ourselves? (probably not ... that's why God made me
3. How long should it take for an expert? (To extrapolate what it would take me, I usually multiply shop time by 10 and then change the scale by one notch, e.g., from minutes to hours, from hours to days, and from days to weeks, etc.). With photos & posts back to NICO to help the next Q'bie, I up shop time by at least two notches.
4. What are the MAJOR steps?
I have NOT checked the shop manual for the chain-guide-check procedure ... but can you tell me the MAJOR steps involved (like does the engine have to be removed from the car, etc.)?