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You really want to DIY your life support system? Actually you should clean and inspect your 1st and 2nd stage and hoses after each dive...past that you really should let someone who has the training and the specs for your reg to do the annual overhaul.
Does it cost a bit more? Yes. Is it worth the money? This is your life support system....you make that call.
If you purchase a regulator new, the price generally should include 2 years maintenance that will be done by the local shop where you purchased it. Once out of service warranty, the cost for a complete octo plus BC annual service, including replacement of all regularly replaced parts- (o-rings, stem valve, etc) is under $100.00. If you are going to do it your self, have a service manual on hand for the item you are servicing, or at the least get a spec list for replacement parts from the manufacturer. An equipment specialist class is also worthwhile. Over the years I have become competent enough to do some (but not all) on site repairs/replacements, but still pay for annual servicing by a reputable dive center. I always get the replaced parts back and keep them for spare parts.
DivemasterDennis
* In recreational diving, there is no "life-support" gear.
Says the dive professional who wants to make sure divers keep paying the annual rent on THEIR regulators. Do you have any data on regulator failure related accidents as a function of "professional" service, DIY service and no service? How about information on qualifications and training required to become a regulator technician?
I have seen only one LDS that offered free service (parts and labor) on regulators he sold; and that did not last long. So, what shops and/or manufacturers have you found that do not charge for service labor for the first 2 years?