jerrell 1 #1 Posted September 11, 2008 :banghead: , hey guys i need some info on the different sizes of drive pulleys and pto's..i have most of the parts to restore my GT1800 work horse, planning on getting the engine ordered next week, my question is what size engine shaft is the most common as i will have to get a drive pulley and pto for the shaft, looking at the 18 hp honda , there is a 1 inch and a 1 1/8 inch shaft but the 1 1/8 shaft is quite a bit more expensive. Share this post Link to post Share on other sites
BPjunk 184 #2 Posted September 12, 2008 , hey guys i need some info on the different sizes of drive pulleys and pto's..i have most of the parts to restore my GT1800 work horse, planning on getting the engine ordered next week, my question is what size engine shaft is the most common as i will have to get a drive pulley and pto for the shaft, looking at the 18 hp honda , there is a 1 inch and a 1 1/8 inch shaft but the 1 1/8 shaft is quite a bit more expensive. Unfortunatly the 1 inch PTO parts are harder to find. With a 18hp engine you will want the bigger PTO clutch. Wild Bill in Richmond, Va. Share this post Link to post Share on other sites
Electro12WH 50 #3 Posted September 12, 2008 Or perhaps shim the 1" shaft? Share this post Link to post Share on other sites
CasualObserver 3,406 #4 Posted September 12, 2008 look on ebay for the pto assembly for a K181, or post a wanted ad for it in the classified section. You may also be able to find a used one if you ask around, or even just the insert that goes into the PTO bell that would reduce it to a 1 inch shaft. Share this post Link to post Share on other sites
TT-(Moderator) 1,129 #5 Posted September 12, 2008 The GT1800's are Eaton hydro equipped and require the 5 1/4" engine pulley with the 1" bore. Kevin (kpinnc) and a few others are also looking for this "hard-to-find" pulley. Other than the inner bearing race (or bushing - as some call it) the PTO clutch disc and PTO pulley will interchange between most newer garden tractors. Share this post Link to post Share on other sites
jerrell 1 #6 Posted September 13, 2008 :banghead: thanks guys, good info, i think i have the 1 1/8 inch, and i saw one of the 1 inch on ebay, but the price was skyrocketing 5 days before the end of auction. the inner bearing or shim is new info for me , are they available i haven't seen or heard of them. does any one have a spare lying around. thanks guys :omg: Share this post Link to post Share on other sites
jerrell 1 #7 Posted September 17, 2008 :USA: i just bid on and won a 1 inch drive pulley , so now i guess i'll order the engine, now i have a 1 & 1/8 spare pulley, i guess this is the way spare parts pile up. :banghead: Share this post Link to post Share on other sites
