Well they were being a bit evasive on the answer. They were also unclear on an estimate on hours to do the service for me. They couldn't remember exactly where the fuel tank was and if it was in the way. Also said if it had ac it would be more money to adjust the valves. More stuff to clear out of the way. It has 890 hours on it now and I know the light will come on at 900. So when the snow removal season is over I will take it in and have the Hydraulic pressure checked and then I can get a better feel about pricing for adjusting the valves. It does not appear that it is absolutely essential that it must go in immediately as some of the others have posted on this thread. Been looking for a reason to buy an 5740 anyway, maybe this will help.