Clas Ohlson JYQ2-9410, Instruction Manual

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Lowering loads

1.  Close the release valve by inserting the handle and turning it clockwise, do not turn it too hard.

2.  Make sure that no people or animals are under the load whilst it is being lowered.

3.  Pump the handle, raising the load enough for the axle stands to be removed.

4.  Using the handle, turn the release valve carefully anticlockwise, allowing the load to lower 

slowly until it is completely down.

Care

1.  When the jack is not in use the lifting arm and handle sleeve should be in the fully lowered 

position. This prevents the pistons from rusting.

2.  The oil container holds approx. 0.5 l hydraulic oil.

3.  Keep the floor jack clean and well lubricated, even the moveable parts on the outside e.g. the 

lifting arm spindle and wheel bearings.

Problems: Localisation and solution

1.  The floor jack does not go up or doesn’t lift the load

a)  The release valve is open, close the release valve and then try lifting.

b)  There might be air pockets in the oil system. Open the release valve. Pump the handle six full 

strokes. Close the release valve and try again.

c)  Check the oil level. Do the following: Put the floor jack on an even surface. Open the release 

valve. The oil level is correct if there is oil up to the lower thread inside the oil container when 
the lifting arm is in the fully lowered position. If the oil level is too low you need to remove the 
plug under the cover plate and fill the oil to the right level, then put the plug back and tighten 
it. Shut the release valve and raise the lifting arm to its full height. Open the release valve 
to lower the lifting arm. Do this 3 or 4 times. The air should now be purged and the oil can 
circulate everywhere. In most cases that is enough to get the floor jack to work properly. Close 
the release valve and try lifting a load.

d)  The release valve is not tight because of dirt on the seal. Rinse by pulling the lifting arm up 

and down several times with the release valve open. If it is necessary you can remove the 
valve for cleaning.

2.  The floor jack sinks when loaded

a)  The piston o-ring could be worn out. This is only likely if the floor jack has been used long and 

hard. Contact our Customer Service Department.

b)  Dirt in the release valve makes the floor jack sink while under load. Remove the release valve, 

clean the seat and replace the valve.

3.  The floor jack does not sink completely after lifting

a)  The lifting arm return spring is loose or has broken off. Replace it.

b)  The floor jack probably needs to be lubricated. Clean and lubricate all movable parts in the 

lifting mechanism.