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!

Study, understand, and follow
all instructions provided with
and on this device before
operating this device.

Do not exceed rated capacity.

This is a lifting device only.

After lifting, immediately
transfer the load to appro-
priately rated vehicle stands.

Never work on, under, or around
a load supported by this device.

Use only on hard, level
surfaces capable of sustaining
rated capacity loads.

Do not move or dolly loads with
this device.

Do not modify this device.

Do not use adapters or
accessories that are not
provided initially.

Lift only on areas of the vehicle
as specified by the vehicle
manufacturer.

Failure to heed these markings
may result in personal injury
and/or property damage.

!

  

 WARNING

To avoid crushing and related
injuries:
NEVER work on, under or around a
load supported only by a jack.
ALWAYS use adequately rated jack
stands. Immediately transfer loads
to appropriate jack stands.

OPERATION

Lifting

1. Place the vehicle in the park gear.
2. Engage the emergency brake.
3. Chock the wheels securely to prevent

inadvertent vehicle movement.

4. Locate and close the release valve by

turning release knob clockwise, firmly.

5. Center jack saddle under lift point. Refer

to the vehicle manufacturer owner's
manual to locate approved lifting points
on the vehicle.

6. Verify lift point then use handle pump to

contact lift point. To lift, pump handle
until load reaches desired height.

7. Transfer the load immediately to

appropriately rated jack stands.

To lower load

1. Raise load high enough to clear the

jack stands.

2. Remove jack stands, carefully. (

always

used in pairs).

3. Slowly turn the release knob counter-

clockwise, but no more than 1/2 turn.
If the load fails to lower:

a. Use another jack to raise the

vehicle high enough to reinstall jack
stands.

b. Remove the malfunctioning jack and

then the jack stands.

c. Using the functioning jack, lower

the load by turning the operating
handle counterclockwise, but no
more than 1/2 turn.

4. Push saddle down to reduce ram

exposure to rust and contamination
after removing the jack from under the
load.

MAINTENANCE

Important:

 Use only a good grade

hydraulic jack oil. Avoid mixing different
types of fluid and 

Never 

use brake fluid,

turbine oil, transmission fluid, motor oil
or glycerin. Improper fluid can cause
failure of the jack and the potential for
sudden and immediate loss of load. We
recommend Mobil DTE 13M.

Adding oil

1. Lower saddle fully.
2. Set jack in its upright, level position.
3. Locate and remove air vent screw
4. Fill with oil until ~3/16" above the inner

cylinder as seen from the  air vent
screw hole.

5. Reinstall the air vent screw

Changing oil

For best performance and longest life,
replace the complete hydraulic fluid at
least once a year.
1. Lower saddle fully.
2. Remove the air vent screw.
3. Lay the jack on its side and drain the

fluid into a suitable container.

Note: 

Dispose of hydraulic fluid in

accordance with local regulations

.

4. Fill with oil until ~3/16" above the inner

cylinder as seen from the  air vent
screw hole.

5. Reinstall the air vent screw.

Lubrication

A periodic coating of light lubricating oil to
pivot points, axles and hinges will help to
prevent rust and assure that wheels,
casters and pump assemblies move
freely.

Cleaning

Periodically check the pump piston and
ram for signs of rust or corrosion. Clean
as needed and wipe with an oily cloth.

Note: 

Never use sandpaper or abrasive

material on these surfaces!

Storage

Lower the saddle to its lowest position
when not in use.

• Leer, comprender, y seguir las

instrucciónes antes de utilizar el
aparato.

• El manual de instrucciónes y la

información de seguridad deben
estar comunicado en lengua del
operador antes del uso.

• No seguir estas indicaciónes puede

causar daños personales o
materiales.

!

   ADVERTENCIA

!

  

 WARNING

Summary of Contents for YA657B

Page 1: ...e handle and handle socket may have to gently tap the pin with a hammer 8 Align the pivot pin with the holes on the side plates that the pivot pin was removed from and tighten the 5 16 18 bolts into t...

Page 2: ...malfunctioning jack and then the jack stands c Using the functioning jack lower the load by turning the operating handle counterclockwise but no more than 1 2 turn 4 Push saddle down to reduce ram exp...

Page 3: ...Handle Release Knob Caster Air Motor Air Vent Screw on the power unit Air Vent Screw on the power unit Handle Fork Min Height Max Height 5 1 4 Capacity 26 Model 5 1 4 YA657B Jack Size L x H 4 Ton 4 To...

Page 4: ...rts give Model number serial number and description below Call or write for current pricing Snap on Tools Company Kenosha WI 53141 1410 4 TROUBLESHOOTING Contact Snap on Technical Service Possible Cau...

Page 5: ...5 Service Parts for Model YA657B...

Page 6: ...6 Service Parts for Model YA657B continued Hyd Unit...

Page 7: ...22098 Speed Pump Assy 1 222201h Spring 1 222257 Plug Poppet Valve 2 222533h Screen 2 223166h Ram Screen 1 226314 Gland Nut 1 226318 Grease Fitting 1 226324 Pressure Plug 1 226325 Pump Link 2 226326 Nu...

Page 8: ...8 Service Parts for Model YA660B...

Page 9: ...9 Service Parts for Model YA660B continued Hyd Unit...

Page 10: ...26325 Pump Link 2 226326 Gland Nut 1 226331 Spring 1 226353h Spring 1 226366 Bolt 1 226372 Plunger Spring 1 227397 Link 1 227436 Turning Rod Assy 1 228875 Spring 1 229887h O ring 1 229888h O ring 1 22...

Page 11: ...11 Service Parts for Model YA662B...

Page 12: ...12 Service Parts for Model YA662B continued Hyd Unit...

Page 13: ...64 Lockwasher 2 210225 Spacer 1 210311 Pipe Plug 3 210411h Washer 1 211341 Rivet 1 212227 Release Valve 1 212689 Bolt 2 213152h Packing Ring 2 213171h Packing Ring 2 214538 Groove Pin 4 Continue on ne...

Page 14: ...ed Tube 1 229910 Retaining Ring 2 229911 Retaining Ring 2 229912 Washer 4 229913 Bell Crank 1 229915 Front Wheel 2 229927 Cap Housing 1 229929 Bearing 1 229932 Spring 2 229933 Plate 2 229934 Pin 1 229...

Page 15: ...15 Service Parts for Model YA667B...

Page 16: ...16 Service Parts for Model YA667B continued Hyd Unit...

Page 17: ...r Pin 1 204842h Copper Gasket 1 209964 Lockwasher 2 210225 Spacer 1 210311 Pipe Plug 4 210411h Washer 1 211341 Rivet 1 212227 Release Valve 1 213152h Packing Ring 2 213171h Packing Ring 2 213639 Bolt...

Page 18: ...od 1 227436 Turning Rod Assy 1 228235 Cotter Pin 1 228257h U cup 1 228354 Universal Linkage 1 228813 Washer 1 228814 Glant Nut 1 228815 u cup Packing 1 228816 Washer 1 228875 Spring 1 228881 Grip 2 22...

Page 19: ...r retailer for disposition or you may contact an Au thorized Service Center listed in the product owner s manual Except where such limita tions and exclusions are specifically prohibited by law the co...

Page 20: ...memo...

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