noe 5 #1 Posted December 16, 2019 My 875 starts but when I put the belt on it won't start. the belt doesn't seem to be tight. when nothing on the pully it starts right up Share this post Link to post Share on other sites
ZXT 2,401 #2 Posted December 16, 2019 3 minutes ago, noe said: My 875 starts but when I put the belt on it won't start. the belt doesn't seem to be tight. when nothing on the pully it starts right up Will it attempt to crank? What belt are you speaking of? The drive belt or the PTO? Whichever it is, make sure that it turns freely. Share this post Link to post Share on other sites
noe 5 #3 Posted December 16, 2019 drive belt complete off starts no problem Share this post Link to post Share on other sites
ZXT 2,401 #4 Posted December 17, 2019 4 hours ago, noe said: drive belt complete off starts no problem Can you turn the transmission pulley by hand? Is this a tractor that you've had and used for a while or one you just got? Share this post Link to post Share on other sites
noe 5 #5 Posted December 17, 2019 one I just got. new carb. belt 71 in. they say it should be 72 Share this post Link to post Share on other sites
kasey54 305 #6 Posted December 17, 2019 Does it turn over and fail to fire, or don't even try? Share this post Link to post Share on other sites
rmaynard 16,373 #7 Posted December 17, 2019 (edited) There is nothing on an 875 that would prevent the engine from starting with the belt on or off. In other words, no safety switches. With the belt on and the parking brake engaged, the belt is loose on the pulleys. When the parking brake is released, the belt tightens but is not super tight, just enough tension to turn the pulley on the transmission. There is nothing in the belt area that would effect starting. The only thing I can think of is the battery ground wire on mine connects to the bolt that holds the belt cover to the engine. I'd look there first. Edited December 17, 2019 by rmaynard Share this post Link to post Share on other sites
