Starter spinning but not cranking

I parked my tractor a few days ago. I went to crank it today (after I changed a flat), and the tractor won't start. I started is spinning over making a "whirling" sound, but I'm not getting the cranking action. I ran a jumper cable from the HOT battery post to the starter post, same "whirling" sound. Just a lot of spinning, no cranking.

Thanks.

How difficult is a bendix replacement or should I just rebuild the starter?

TIP: don't pull yer 8" long starter bolts all the way out of yer starter 'cuz yer brushes will fall out and you'll learn some new words. (put some 5/16-18 nuts on the ends)

It take some jiggling and angle pointing towards the engine block to clear the starter ring gear. Some guys seem to think they need to remove the water drain and loosen the oilfilter. I don't remember doing that 12 years ago when I replaced my starter bendix drive.

Recommend you get the "new and improved" clutch style starter drive. Your old bendix drive may have lost some parts down in the "spareroom" of the tranny housing..... donnna worry, all N's carry spare bendix parts down there.

Removal of starter drive is really quite eazy. Just lightly clamp the starter UPSIDEDOWN so you can use yer left elbow to pressdown on the bendix drive springload to tap-out the pin with yer right hand hammer..... ....Dell