I have a Bobcat zero turn, model 218es with a Briggs Intel 18hp engine, model 405777. I have been working on her pretty steady over the past few seasons to keep it going but am planning on replacing the engine in the next season or two with something a little more commercial grade. Probably a Briggs Vanguard or maybe an Intek Commercial series. Is there a reference guide out there that can accurately tell me my crankshaft output size and length? I am getting multiple conflicting bits of information and would like to know if I can confirm it without pulling the electric PTO off and measuring by hand. So far here is what I have to go off of:
I have a spare engine in the shop, model 407777. Briggs customer support is telling me it is internally identical to my 405777. I measure the output shaft length and diameter on this engine and it is 3-5/32 long and 1' around. This I confirmed with my own two eyes. If it is the identical engine as mine currently installed unit then I would expect the shaft length and diameter to also be the same but when I went through a repower specialist they are insisting briggs says my current engine has a 4-5/16 long shaft that is 1-1/8 in diameter. I asked that they verify this info today based on what I know to be true above and they came back again and stated the were correct per the info from Briggs. Then I found this info on another repower website that confirms what the first report support professional stated, my engine is a 1-1/8 diameter shaft and 4-5/16 in length. Here is that website showing Bobcat replacement for my exact engine code and the crankshaft demensions. https://www.engine4less.com/repower/BOBCAT/405777-0112-E1.html . There was also someone in another post of my earlier that checked on something when I was asking questions about my two engines who stated his records showed by the 405777 and the 407777 had 1 inch shafts that were 3-5/32 long. Finally I looked up some replacement PTO parts (specifically the part number for a new electric pto on my machine) and it states the internal diameter was 1-1/8. see here: https://www.stens.com/255-455-electric-pto-clutch . At this point I am thoroughly confused and thinking the only option I have is wait to order my new engine once my current one is pulled from the machine so I can verify this info prior to ordering but I just wanted to check to see if anyone knows of a way to confirm it? Briggs wouldn't come out and state the spec on it today, probably for some sort of liability reason I suspect, but they did sent me all kinds of data sheets I just don't see that info on any of them. Does anyone have concrete info for me?
Thansk
I have a spare engine in the shop, model 407777. Briggs customer support is telling me it is internally identical to my 405777. I measure the output shaft length and diameter on this engine and it is 3-5/32 long and 1' around. This I confirmed with my own two eyes. If it is the identical engine as mine currently installed unit then I would expect the shaft length and diameter to also be the same but when I went through a repower specialist they are insisting briggs says my current engine has a 4-5/16 long shaft that is 1-1/8 in diameter. I asked that they verify this info today based on what I know to be true above and they came back again and stated the were correct per the info from Briggs. Then I found this info on another repower website that confirms what the first report support professional stated, my engine is a 1-1/8 diameter shaft and 4-5/16 in length. Here is that website showing Bobcat replacement for my exact engine code and the crankshaft demensions. https://www.engine4less.com/repower/BOBCAT/405777-0112-E1.html . There was also someone in another post of my earlier that checked on something when I was asking questions about my two engines who stated his records showed by the 405777 and the 407777 had 1 inch shafts that were 3-5/32 long. Finally I looked up some replacement PTO parts (specifically the part number for a new electric pto on my machine) and it states the internal diameter was 1-1/8. see here: https://www.stens.com/255-455-electric-pto-clutch . At this point I am thoroughly confused and thinking the only option I have is wait to order my new engine once my current one is pulled from the machine so I can verify this info prior to ordering but I just wanted to check to see if anyone knows of a way to confirm it? Briggs wouldn't come out and state the spec on it today, probably for some sort of liability reason I suspect, but they did sent me all kinds of data sheets I just don't see that info on any of them. Does anyone have concrete info for me?
Thansk