I have used the JD 650 twice in the current sub-twenty degree temps we have been having.
The tractor started,, but, not happily,, cough, cough,,, chug,, chug,, chugg,,,
Today, I decided to plug in the block heater I installed some 18 months ago.
After a few minutes,,, you could hear a sizzling noise,,
kinda like the old immersion heaters we used 30 years ago to make instant coffee.
I guess the noise is normal?
On another note,, do I turn the key clockwise and hold to operate the start assist grid,,
whatever it is called?