
Quick Start Guide
Compact Excavators
48Z-1/51R-1/55Z-1/57C-1
1

Index
Intended Use ......................................................................................................................................3
Dimensions ........................................................................................................................................4
Tie Down Points ................................................................................................................................5
Lifting Points .......................................................................................................................................6
Cab Layout & Controls ................................................................................................................. 7-10
Start Up Sequence ........................................................................................................................... 11
Setting Auxiliary Flows ......................................................................................................................12
Hydraulic Hitch Unlock .....................................................................................................................13
Auxiliary Venting & Shutdown ...........................................................................................................14
Maintenance Position ........................................................................................................................15
Service / Maintenance .......................................................................................................................16
Access Covers .............................................................................................................................17-18
Fluids & Lubricants ............................................................................................................................19
Machine Attachments .......................................................................................................................20
Troubleshooting / FAQs .............................................................................................................. 21-23
This Quick Reference Guide is to provide quick and simple information to the Operator and does not
include any health and safety aspec ts. In addition, because of our continual development of machines,
features described in this Quick Reference Guide may differ from those on your machine. Nor errors and
emissions be entirely ruled out. This Quick Reference Guide DOES NOT replace the Operators Manual.
You MUST read ALL the disclaimers and safety and other instructions in the Operators Manual before
initially operating this product. Accordingly, no legal claims can be entertained on the basis of the data,
illustrations or descriptions in this Quick Reference Guide. This machine should not be operated by any
person who isn’t appropriately qualified or had the appropriate training. Operation of this machine without
periodic maintenance could cause it to malfunction. For more information please contact your JCB Dealer.
2 Please see operator manual for full details.

Intended Use
General
> Machine type – Compact Excavator
> Self propelled machine with a tracked undercarriage
> 360° revolving upper structure with boom, dipper, bucket and slew mechanism
Intended Use
> Machine intended to be used in normal conditions as detailed in the operators manual
> With bucket fitted, machine work cycle consists of digging, elevating, slewing and discharging
of materials
> Applications include earthmoving, road construction, building and construction, landscaping etc.
> Can be used for object handling
> Not intended for use in mining and quarrying applications, demolition, forestry, any use
underground and any explosive atmospheres.
> Must not be used for forestry, used with attachments of unknown weight, used on surfaces with
unknown stability – list not exhaustive
>
PPE may be required in certain applications/environments e.g. high silica concentration or asbestos
> The machine should not be operated by any person without appropriate qualifications, training
or experience of using this type pf machine
> Prior to use, the machines suitability should be considered with regards to the intended
applications and any hazards which may be present
48Z-1, 51R-1, 55Z-1, 57C-1 3

Dimensions
Fig 1
F
G
H
I
J
L
D
K
E
A
B
C
Machine model 48Z-1 51R-1 55Z-1 57C-1
A Sprocket idler centres mm 198 5
B Track length on ground mm 198 5
C Undercarriage overall length – rubber mm 2490
Undercarriage over all length – steel mm 2490
D Kingpost clearance mm 631
E Tailswing radius mm 975 104 0 1000 130 0
F Overall width of supers tructure mm 1820 1850 1845
G Height over cab mm 25 51 25 61
H Ground clearance mm 300
I Track gauge mm 155 0
J Width over tracks mm 19 50
K Transpor t length with standard dipper mm 5176 5091 5271 5125
L Track height mm 560
M Counterweight clearance mm 618
M
* Standard machine specification, please see data plate for specific machine weight.
4 Please see operator manual for full details.4 Please see operator manual for full details.

Dimensions
Fig 2
A Rear track tie- down points
Fig 3
B Front track tie-down points
Note: These measurements are based on a 2500mm wide trailer bed. The correct tie down positions
are identified on the machine by their labels.
Tie Down Posi tion Decal
Fig 4
A Rear track tie-down points
B Front track tie-down points
C Angle = 44.7 ± 5º
D Angle = 43 ± 1.5º
E Length = 2,100 ± 400mm
F Length = 2,200 ± 100mm
48Z-1, 51R-1, 55Z-1, 57C-1 548Z-1, 51R-1, 55Z-1, 57C-1 5

Lifting Points
Fig 5
Description 48Z-1 51R-1 55Z-1 57C-1
A Boom Lift Point
B Dozer Lift Point
C 35°
D mm 2400 2480 2320 2220
E mm 4800 4850 4820 4700
F mm 993 1003 993 955
G mm 769 843 875 972
H mm 947 934 961 859
*COG = Centre of Gravity
Fig 6
The correct lifting positions are identified on the machine by their labels: Lifting point
Position label.
6 Please see operator manual for full details.

Cab Switch and Panel
Fig 7
A Track controls
B Fire extinguisher
C Instrument panel
D Auxiliary power socket
E USB port
F Excavator controls
G Dozer blade control
H Switch panel
J Rotary switch
K Ignition key switch
L HVAC controls
M Radio
N Glazing breaker
P Operator seat
Fig 8
A 2 Go
B Heavy + mode
C Aux 1 (high flow) selection switch
D Aux 2 (low flow) selec tion switch (opt)
E Lift overload on/off switch (opt)
F Auto idle on/off switch (opt)
G Worklights on/off switch
H Beacon on/off switch (opt)
J Wiper & washer on/off switch (opt)
K Q-hitch sequence switch (opt)
L Auto-hydraulic warming switch
M Blank
Key
(opt) – Option
48Z-1, 51R-1, 55Z-1, 57C-1 7

Instrument Panel
Fig 9
A LCD screen
B Warning and indicator lamps
C Fuel level gauge
D Coolant temperature gauge
E Engine speed
F Back button
G Up button
H Home button
J Down button
K Select but ton
Fig 10
A Travel speed status
B Power band status
C Auto idle status
D Dozer float status
E Low flow aux status
F High flow aux mode
G High flow aux status
H ISO/SAE status
J Swing / aux status
K Engine hours status
L Trip hours status
Green – Active / selected
Orange – Status
Grey – Inactive
8 Please see operator manual for full details.