Every time I am setting up my routine I put my weight and then select manual and select time,when I ever put the minutes,it gives me an invalid time,although always put less than 60 minutes thanks
Exercise & Fitness - Life Fitness - 9000 Next Generation Treadmill
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Http://us.home.lifefitness.com/content.cfm/ownersmanual
You can possibly find your model here for owners manual.