Roper dryer won't start

My Roper dryer won’t start. My wife had just finished drying a load and put another load in to dry and it wouldn’t start. When you turn the timer to a setting you do hear some clicks but it won’t start up.

I turned the timer on around, when it got to the fluff setting it did come on. When I took my hand off of the timer it kinda clicked back a notch maybe and stopped. It would repeat this action but only on fluff setting.

I haven’t tested anything yet.

What should I check first?

Thanks!

Here are your parts
http://www.appliancepartspros.com/parts-for-roper-res6745pq0.html

See the attachment for the wiring diagram.

Since the unit will start in air fluff the start switch, motor and thermal fuse are OK.

Sounds like a timer problem.
Set the timer to a problem area.
Unplug the unit.
Check BK to BU on the timer, should be 0 ohms.
Check T to W, should be 0 ohms.

It is a good idea to disconnect one side of the contact set you are checking. This ensures that you do not read an alternate/parallel circuit path.
Also use the most sensitive meter scale and short the meter leads together before starting. This will tell you if there is a zero offset in the meter.