Bobcat S175 hand pump vacuum

[bobcats175]

Hi all, Can somebody help me with my bobcat s175 i'm getting to have sometimes vacuum on hand pump

 

[OldMachinist]

Do you mean that the hand primer is getting sucked flat? If so then either there's crud in the fuel tank clogging the fuel pick up or the line is getting pinched. Another thing is if it's very cold where you are and the fuel is gelled in the tank.

 

[Storm79]

Do you mean that the hand primer is getting sucked flat? If so then either there's crud in the fuel tank clogging the fuel pick up or the line is getting pinched. Another thing is if it's very cold where you are and the fuel is gelled in the tank.

Thank you, i will reply when i got done whit cleaning.

 

[Storm79]

Thank you, i will reply when i got done whit cleaning.

The final solution is that i do not let the fuel a quarter less. So it is working fine. Thank you for help.

 

[antfarmer2]

The final solution is that i do not let the fuel a quarter less. So it is working fine. Thank you for help.

Check your vent on your fuel cap

 

[Storm79]

Check your vent on your fuel cap

Ok.

 

[Storm79]

Ok.

The fuel cap ventil is working good

 

[farmshop]

The fuel cap ventil is working good

If it works good till 1/4 tank I would check for debris in the tank blocking the pick up tube. Also check the primer bulb there is a flow arrow maybe got reversed.

 

[Storm79]

If it works good till 1/4 tank I would check for debris in the tank blocking the pick up tube. Also check the primer bulb there is a flow arrow maybe got reversed.

If there is debris in the tank , how do i check, i can not look into the tank. Might blow it out? The thubes are thin it's hard for bigger debris to get through it. The the primer bulb flow arrow is in good direction. There is a small pump on the high pressure fuel pump It was replaced is brand new.

 

[farmshop]

If there is debris in the tank , how do i check, i can not look into the tank. Might blow it out? The thubes are thin it's hard for bigger debris to get through it. The the primer bulb flow arrow is in good direction. There is a small pump on the high pressure fuel pump It was replaced is brand new.

Most tanks have a drain. I would pull the pick up tube when it acts up to see if anything is in it. I had a 773 that I had to replace a lines to get it to work right. Blowing it out doesn't work because there is usually a check valve