743

[Dillon]

Just bought a bobcat 743 I pick it up this weekend. I was wondering what weight oil to run in the engine and how much it holds. I also would like to know how to check the hydro oil. I'am going to get a manual but want to change the oil and make sure the fluids are all topped off so I can work with it this weekend. Thanks

 

[OldMachinist]

You can download all your manuals here http://www.mediafire.com/?sharekey=31fe914bdce0f590ab1eab3e9fa335ca2fe3e23dbbc2ef73
Engine oil with filter is 9 Quarts of 10w30 diesel classification for -10 F to 100 F operation.
It depends on your serial number as to where to check the hydraulic oil. It could have a petcock, sight glass or dipstick.

 

[mrfixitpaul]

You can download all your manuals here http://www.mediafire.com/?sharekey=31fe914bdce0f590ab1eab3e9fa335ca2fe3e23dbbc2ef73
Engine oil with filter is 9 Quarts of 10w30 diesel classification for -10 F to 100 F operation.
It depends on your serial number as to where to check the hydraulic oil. It could have a petcock, sight glass or dipstick.

Should hold 9 qts. engine oil when filter is changed. When checking fluids, don't forget to check the chaincase oil....the big plug at front of the machine....you should be able to at least reach the oil with a finger and make sure it isn't milky.

 

[Dillon]

Should hold 9 qts. engine oil when filter is changed. When checking fluids, don't forget to check the chaincase oil....the big plug at front of the machine....you should be able to at least reach the oil with a finger and make sure it isn't milky.

Thanks guys. I stopped and tinkered with it today. It has a site class for hydro oil. Is the chain case oil the same as the hydro oil or is it seperat oil. What kind of oil do you run in them? Just regular hydro oil? The machine has set for a few years and it got water down the exhaust. It had a stuck exhaust valve. Got that to free up today. So hopfuly towmorrow it will be running and I'll bring it home.

 

[Dillon]

Should hold 9 qts. engine oil when filter is changed. When checking fluids, don't forget to check the chaincase oil....the big plug at front of the machine....you should be able to at least reach the oil with a finger and make sure it isn't milky.

Thanks guys. I stopped and tinkered with it today. It has a site class for hydro oil. Is the chain case oil the same as the hydro oil or is it separate oil. What kind of oil do you run in them? Just regular hydro oil? The machine has set for a few years and it got water down the exhaust. It had a stuck exhaust valve. Got that to free up today. So hopefully tomorrow it will be running and I'll bring it home.

 

[mrfixitpaul]

Thanks guys. I stopped and tinkered with it today. It has a site class for hydro oil. Is the chain case oil the same as the hydro oil or is it separate oil. What kind of oil do you run in them? Just regular hydro oil? The machine has set for a few years and it got water down the exhaust. It had a stuck exhaust valve. Got that to free up today. So hopefully tomorrow it will be running and I'll bring it home.

The chaincase is separate from the hydro oil, but both use the same oil. As for what oil to use....everyone has a different opinion, Bobcat recommends either using their hydrostatic fluid or 10w30 or 10w40 engine oil. All I've ever used is the Bobcat oil, but i was probably brainwashed when I worked for a Bobcat dealership.

 

[Dillon]

The chaincase is separate from the hydro oil, but both use the same oil. As for what oil to use....everyone has a different opinion, Bobcat recommends either using their hydrostatic fluid or 10w30 or 10w40 engine oil. All I've ever used is the Bobcat oil, but i was probably brainwashed when I worked for a Bobcat dealership.

Got the machine home. Had to winch it on the trailer because it would not start from bad fuel. After I got it home I strapped an old snowmobile gas tank to the cage and got it running hooking the fuel line to the fuel pump. I ran it around and made sure everything worked put about an hour and a half on it with no problems. So today it was raining so I brought it to my friends shop and cleaned out the fuel tank and replaced all the fuel lines and filter. Now I cant get it to bleed out and start. Is there a trick to getting these engines bled? I checked the hydro oil and chain case also no milky oil. I was surprised after it has set for around seven years.

 

[Tazza]

Got the machine home. Had to winch it on the trailer because it would not start from bad fuel. After I got it home I strapped an old snowmobile gas tank to the cage and got it running hooking the fuel line to the fuel pump. I ran it around and made sure everything worked put about an hour and a half on it with no problems. So today it was raining so I brought it to my friends shop and cleaned out the fuel tank and replaced all the fuel lines and filter. Now I cant get it to bleed out and start. Is there a trick to getting these engines bled? I checked the hydro oil and chain case also no milky oil. I was surprised after it has set for around seven years.

Open the bleed screw on the injector pump and pump the hand primer till it feels firm and you can't feel bubbles in the primer bulb. When it feels good, close the bleed screw and you should be good to go. If it runs then stops after a short time, do it again to get the last of the air out.
The Kubota engine is one of the easiest engines to prime.

 

[Dillon]

Open the bleed screw on the injector pump and pump the hand primer till it feels firm and you can't feel bubbles in the primer bulb. When it feels good, close the bleed screw and you should be good to go. If it runs then stops after a short time, do it again to get the last of the air out.
The Kubota engine is one of the easiest engines to prime.

Thanks got it running today. I pulled the line out of the tank and there was no cheek ball on the line. so it was just dropping the fuel. I had a spare cheek ball from my snowmobile put that in and pumped up the primer and it started right up.