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It varies depending on how much electrical load you force it to carry. The more lights/load you put on them the harder it has to work. using LED's will reduce this load substantially I replaced mine in the 89 2 years ago and I have put 160,000 km on it I was running high wattage bulbs as well. Running too long with low or dirty oil can also be a factor since it uses the oil to keep it from overheating.

Yes I did. I have the service manual & the after looking at it again I found the adjustment bolt. They are located under the front crowling. Don't need to remove anything. Thanks for all the input guys!

Thank you everyone for replying, I'm heading to the store now to buy a clamp, hopefully this will get the job done. I'll see about upgrading from a trial member. @Squidley I appreciate the offer, I'm sure I will definitely need your advice sooner or later!

And this is why I said slowwwly apply air. .....Oh and I guess won't hurt to keep your finger out of the way ..... cause it will hurt if you don't.

Be very careful when using comresed air to extract brake caliper pistons. They can move quickly with extreme force. You could easily lose a finger if you are not careful.

I was going to call him, but his profile doesn't have his number in it.

Hey Brad I am not sure if trial members have access to member profiles.

I apply the brake fluid to the outside of the pistons after cleaning as best I can and before pushing them back in to give the pistons some lubrication so they slide in easier (only use brake fluid other lubricants can swell the rubbers). This is only if I do not intend on rebuilding the caliper and intend only on pushing the pistons back in and reinstalling calipers as they are. Applying air to the brake bleed valve is only if you want to pop the pistons right out, and replace the seals after cleaning pistons and bores. in which case at this point you would have removed the calipers completely from the bike and now have them on the work bench. generally I keep the bleed valve closed and apply the air to were the brake line was attached. place a thin piece of wood were the disc pads sit or set in an old disc pad than slowly apply air until the pistons pop out. A rag covering the caliper and air line during this process helps avoid getting brake fluid in your eyes.

My number is in my profile, give me a call if you get a chance.

You really need to clean those pistons befor compressing them. I just use a piece of wood that fits and a couple c clamps.