Hitachi CJ 110V Manual

MODEL
CJ 110V
POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
Revised Sep. 1999
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
C
JIG SAW
CJ 110V
LIST No. 0583

Symbols Utilized Competitors
Company Name Model Name
BBOSCH GST85PBAE
CMAKITA 4304T
REMARK :
Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s)
is(are) used in the place of company name(s) and model name(s) of our
competitor(s). The symbol(s) utilized here is(are) as follows:

CONTENTS
[ Business Section ]Page
1. PRODUCT NAME••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1
2. MARKETING OBJECTIVE
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1
3. APPLICATIONS•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
4. SELLING POINTS••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
4-1. Selling Point Descriptions
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
2
5. SPECIFICATIONS••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 3
6. COMPARISONS WITH SIMILAR PRODUCTS•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 6
7. ORBITAL MECHANISM••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
7-1. Blade Movement•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
7-2. Orbital Position Selection•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
8. BLADES
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
8
9. PRECAUTIONS IN SALES PROMOTION
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
9
9-1. Handling Instructions
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
9
9-2. Name Plate••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 9
10. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
••••••••••••••••••••••••••••••••••••••••••••••••
10
10-1. Disassembly
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
10
10-2. Reassembly••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
10-3. Wiring Diagrams•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
18
10-4. Insulation Tests••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
19
10-5. No-Load Current Value•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 19
11. STANDARD REPAIR TIME (UNIT) SCHEDULES•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 20
[Appendix ]
Assembly Diagram for CJ 110V•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 21
Notice for use
Specifications and parts are subject to change for improvement.
Refer to the Hitachi Power Tool Technical News for further information.

--- 1 ---
1. PRODUCT NAME
Hitachi Electric Jig Saw, Model CJ 110V [110 mm (4-1/4") ]
[100 mm (3-7/8") for Europe]
2. MARKETING OBJECTIVE
The Model CJ 110V has been developed based on the Model CJ 65V2. The key features of the Model
CJ 110V are as follows:
1 Base can be adjusted and locked without tools
2 Maximum cutting depth: 110 mm (4-1/4") [100 mm (3-7/8") for Europe, in compliance with standards]
[When using the No. 1 (Long) blade]
The Model CJ 110V is added to Hitachi's jig saw lineup together with the Model CJ 65V2.
3. APPLICATIONS
• Cutting or cutting out shapes in various types of wood workpieces
• Cutting various types of metals such as mild steel, aluminum and copper
• Cutting various types of synthetic resin materials such as bakelite and vinyl chloride
• Cutting various decorative sheets, and, thin and soft construction materials
• Cutting stainless steel sheets
4. SELLING POINTS
Maximum cutting depth: Wood 110 mm
Power-plus 580 W
motor for high cutting
speed
Base can be adjusted and locked without
tools.
Wood 100 mm for Europe (HITACHI CJ 65V2: Wood 65 mm)
(HITACHI CJ 65V2 and B: Accessory hex.
bar wrench is required.)
Rigid, cast aluminum base with reinforced steel
plate. Convenient storage compartment in base for
accessory jig saw blades and hexagonal bar wrench.
Electronic speed
control dial for best
cutting efficiency
Hitachi original plunger
support mechanism for
greater cutting accuracy

--- 2 ---
4-1. Selling Point Descriptions
(1) Adjusting and locking the base
The base must be adjusted when cutting in a circle using the optional circular guide, when cutting out
shapes, or when bevel cutting. The Model CJ 110V requires no tool for adjusting and locking of the base.
Adjust and lock the base according to the following procedure.
1 Turn the base handle just under the housing about 90˚to loosen (Fig. 1).
2 Move the base forward or backward if necessary. For bevel cutting, align the horizontal groove on
the half-round portion of the base to the mark on the gear cover to incline the base. The base can be
inclined to either side (right or left) up to 45˚. The half-round portion is calibrated from 0˚to 45˚in
increments of 15˚. The base can be easily inclined by adjusting the mark on the gear cover to the
desired calibration (Fig. 2).
3 Turn the base handle about 90˚in the direction opposite to 1 to lock the base and secure the base
handle to the original position just under the housing (Fig. 1).
Fig. 1 Fig. 2
Base handle
Loosen
Tighten
90˚
Base handle
mark on the
gear cover
Scale on the half-round portion
Groove on the half-round portion
Mark on the gear cover

--- 3 ---
26 mm (1")
5. SPECIFICATIONS
CJ 110V
Max. cutting thickness Wood 110 mm (4-1/4")
Mild steel 10 mm (3/8")
(For Europe: Wood 100 mm (3-7/8") in compliance with standards)
Capacities
Min. cutting radius 25 mm (1")
Type of power source Single-phase AC 50/60 Hz
Type of motor Single-phase AC commutator motor
Voltage
Rated current 110 V
5.2 A
Insulation method Double insulation
Enclosure Housing, Handle, Tail cover••••••••••••••••••••••••••••••Polyamid resin
Gear cover, Upper cover ••••••••••••••••••••••••••••••••••Aluminum alloy die casting
(Black)
Type of switch Trigger switch
Power input 570 W (U.K. 110 V: 540 W)
Output About 345 W
Number of strokes
per minute No load 700 --- 3,200 /min
Length of stroke
Full load 2,450 /min
115 V
5.2 A 230 V 2.6 A
45˚(right and left)
Max. cutting angle
Net 2.4 kg (5.3 lbs) [actual weight: 2.6 kg (5.7 lbs)]
Gross 2.8 kg (6.2 lbs) [4.2 kg (9.3 lbs) with plastic case]
Weight
•Corrugated cardboard box with plastic case
Packaging
Length••••••••••2.5 m (8.2 ft)
Cord
Blade (No. 41, No. 42, No. 46)••••••••••••••••••••••••••••••••••••••••••••••••••••••Each 1pc.
Splinter guard•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••1 pc.
Standard accessories
*
*
*Be sure to check the Name Plate on product as it is subject to change by area.

--- 4 ---
Blade shape Application
Wood
Wood, Pulp
Synthetic resin
Steel, Pulp
Nonferrous metal
Synthetic resin
Wood, Pulp
Synthetic resin
Stainless steel
Blade No.
No. 1
(Long)
No. 11
No. 12
No. 15
No. 16
No. 21
No. 22
No. 95
No. 96
No. 97
Pitch
6
8
20
8
25
6
10
18
32
21
Code No.
879227
879336
963390
879337
963391
879338
963392
879339
963393
879340
963394
879341
963395
950482
950483
950480
950481
963400
Per pkg.
3
5
10
5
10
5
10
5
10
5
10
5
10
5
10
5
10
5
Optional Accessories
(1) Blades
Code No.
316126
(2) Dust collector ass'y
NOTE:
•The shapes of the standard blade No. 41 and the optional blade No. 21 are the same.
•The shapes of the standard blade No. 42 and the optional blade No. 12 are the same.
•The shapes of the standard blade No. 46 and the optional blade No. 16 are the same.

--- 5 ---
Code No.
305955
(3) Straight guide ass'y
Code No.
305956
(4) Circular guide ass'y
Type
TR 12-B
(5) Bench stand

--- 6 ---
6. COMPARISONS WITH SIMILAR PRODUCTS
CJ 110V
100 (3-7/8 " ) for E.U.
110 (4-1/4")
10 (3/8")
25 (1")
26 (1")
570*
700 --- 3,200
87
None
Equipped
45˚
217 (8-9/16")
202 (7-15/16")
72 (2-13/16")
2.4 (5.3 lbs)
2.6 (5.7 lbs)
4.2 (9.3 lbs)
5
HITACHI
Maker
Model name
Cutting
capacity
Wood
Mild steel
Min. cutting radius
Length of stroke
Power input
No-load speed
No-load noise level
Tool-less blade attachment
Tool-less base adjustment
Max. bevel angle of base
(right and left)
Dimensions Length
Height
Width
Weight
Actual weight
Shipping weight
Unit per master carton
mm
mm
mm
mm
W
/min
dB
mm
mm
mm
kg
kg
Unit
CJ 65V2
65 (2-1/2")
10 (3/8")
25 (1")
26 (1")
570
700 --- 3,200
87
None
None
45˚
217 (8-9/16")
190 (7-5/16")
72 (2-13/16")
2.4 (5.3 lbs)
2.5 (5.5 lbs)
4.0 (8.8 lbs)
5
B
85 (3-11/32")
10 (3/8")
---
26 (1")
580
500 --- 3,100
81
Equipped
None
45˚
250 (9-27/32")
203 (8")
79 (3-1/8")
2.4 (5.3 lbs)
2.6 (5.7 lbs)
---
---
C
110 (4-1/4")
10 (3/8")
---
26 (1")
600
500 --- 3,000
95
Equipped
Equipped
45˚
230 (9-1/16")
204 (8")
73 (2-7/8")
2.4 (5.3 lbs)
2.6 (5.7 lbs)
---
---
*Be sure to check the Name Plate on product as it is subject to change by areas.

--- 7 ---
III II I 0
Orbital position
Blade edge movement
7. ORBITAL MECHANISM
7.1 Blade Movement
In the Model CJ 110V, the orbital mechanism moves the blade up-and-down and forward-and-backward in
the same manner as the Model CJ 65V2. This makes the blade dig well into wood and other soft materials
and also discharges cutting chips well to achieve speedy cutting. The amount of fore-and-aft blade
movement can be adjusted just by turning the change knob to any of the four settings. The following table
shows the modeled orbits of blade movement at each orbital position (change knob position).
7-2. Orbital Position Selection
Selection of the most appropriate orbital position for each cutting job is essential to achieve the best
efficiency for cutting. However, as the best orbital position depends on such factors as the hardness and
thickness of the workpiece, the desired finish of the cut surface, and so on, it is not practical to set a single,
simple standard for best orbital position selection. The table (next page) can be used as a general guide for
appropriate orbital position selection based on various factors.
III II I0
Perpendicular
movement only
Table 1 Blade movement illustration
26 mm (1")
1.5 mm (1/16")
1 mm
(1/24")
0.5 mm
(1/48")
(At guide roller position)

--- 8 ---
Material
to be cut Blade
Material quality
No. 1 (Long) No. 11 No. 12, 42 No. 15 No. 16, 46 No. 21, 41 No. 22 No. 95 No. 96 No. 97
Thickness of material [mm (inch)]
Lumber General lumber
Below
110 (4-1/4) 10 (3/8)
---
60 (2-11/32)
Below
20 (3/4) 10 (3/8)
---
60 (2-11/32)
5 (5/16) ---
40 (1-9/16)
Plywood
Iron
plate
Mild steel plate
Stainless steel
plate
Nonferrous
metal
Aluminum
copper, brass
Aluminum sash
Plastics
Phenol resin,
melamin resin, etc.
Vinyl chloride,
acryl resin, etc.
Foamed polyethylene,
foamed styrol
Pulp
Cardboard.
corrugated paper
Hardboard
Fiberboard
5 (3/16) ---
30 (1-3/16) Below 10 (3/8) 5 (3/16)
---
30 (1-3/16) 3 (1/8)
---
20 (1-3/4)
3 (1/8)
---
10 (3/8) Below 3 (1/8) 3 (1/8)
---
6 (1/4) Below 3 (1/8) 2 (5/14)
---
5 (3/16)
1.5 (1/16)
---
2.5 (3/32) 0.5 (1/64)
---
1.5 (1/16) 1.5 (1/16)
---
2.5 (3/32)
Below
3 (1/8) Below 5 (3/16)
3 (1/8)
---
12 (15/32) Below 3 (1/8) 3 (1/8)
---
12 (15/32)
Height
up to
30 (1-3/16)
Height
up to
30 (1-3/16)
Height
up to
30 (1-3/16)
5 (3/16)
---
20 (3/4) Below 6 (1/4) 5 (3/16)
---
15 (19/32) Below 6 (1/4) 5 (3/16)
---
20 (3/4) Below 6 (1/4) 5 (3/16)
---
15 (19/32)
5 (3/16)
---
30 (1-3/16)
10 (3/8)
---
60 (2-11/32)
Below
10 (3/8)
3 (1/8)
---
30 (1-3/16)
5 (3/16)
---
20 (3/4)
5 (3/16)
---
30 (1-3/16)
Below
5 (3/16)
3 (1/8) ---
30 (1-3/16)
5 (3/16)
---
30 (1-3/16)
10 (3/8)
---
60 (2-11/32)
3 (1/8) ---
20 (3/4)
3 (1/8)
---
40 (1-1/2)
5 (3/16)
---
20 (3/4)
5 (3/16)
---
30 (1-3/16)
Below
5 (3/16)
3 (1/8) ---
30 (3/16)
5 (3/16)
---
15 (19/32)
5 (3/16)
---
30 (1-3/16)
10 (3/8) ---
60 (2-11/32)
3 (1/8) ---
30 (1-3/16) 10 (3/8)
---
60 (2-11/32)
3 (1/8) ---
40 (1-1/2)
3 (1/8)
---
30 (1-3/16) Below 6 (1/4) 3 (1/8)
---
30 (1-3/16) Below 6 (1/4) 3 (1/8)
---
30 (1-3/16)
Below
6 (1/4)
Factor Orbital position
III II I 0
Table General guide for appropriate orbital position selection
Material hardness Soft material
Material thickness Thick
Cutting speed Faster cutting
Straight cutting or curved
cutting Straight cutting
Surface finishing Rough finish acceptable
Material stability Very stable
Hard material
Thin
Slower cutting
Curved cutting
Fine finishing
Unstable
8. BLADES
Proper blade selection is very important to obtain the maximum performance of this model. The table below,
based on type and thickness of the material to be cut, can be used as a handy reference is selecting the
optimum blade.
Note
•The minimum cutting radius of No. 1 (Long), No. 21, No. 22 and No. 41 blades is 100 mm (4").
•No. 1 (Long), No. 11, No. 12, No. 15, No. 16, No. 21, No. 22, No. 95, No. 96 and No. 97 blades are sold
separately.

--- 9 ---
9. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model CJ 110V Jig Saw by all of our
customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer
seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the
meaning of the precautions listed on the Caution Plate attached to each tool.
9-1. Handling Instructions
Although every effort is made in each step of design, manufacture, and inspection to provide protection
against safety hazards, the dangers inherent in the use of any electric tool cannot be completely eliminated.
Accordingly, general precautions and suggestions for the use of electric power tools, and specific
precautions and suggestions for the use of the Jig Saw is listed in the Handling Instructions to enhance the
safe, efficient use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of
the Handling Instructions to be able to offer appropriate guidance to the customer during sales promotion.
9-2. Name Plate
Each tool is provided with a Name Plate which lists the following basic safety precautions in the use of the
tool.
(1) For U.S.A. and Canada
DOUBLE INSULATED
- When servicing,
use only identical replacement parts.
•For safe operation, see instruction manual.
AVERTISSEMENT
•Lire avec attention la notice
d'utilisation.
(2) For New Zealand
CAUTION
•Read thoroughly HANDLING INSTRUCTIONS before use.

--- 10 ---
10. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The circled numbers and the [Bold] numbers in the descriptions below correspond to the item numbers in
the Parts Lists and exploded assembly diagram for the Model CJ 110V.
10-1. Disassembly
(1) Disassembly of the Base [82] (Fig. 3)
Remove the four M5 Nylock Flat Hd. Screws [79] and remove the Sub Base [78] from the Base [82].
Remove the two M4 x 8 Hex. Socket Hd. Bolts [81] together with the two Washers [80]. Holding the
Base Handle [77] with a hand, loosen and remove the Base Bolt [84] with a flat head screwdriver. Now,
the Base [82], the Base Locker [83], the Washer [76] and the Base Handle [77] can be removed from
the Gear Cover [51].
(2) Disassembly of Handle (A) [1] and Handle (B) [8] (Fig. 4)
Remove the D4 x 20 Tapping Screw [10], and disassemble the Tail Cover [30]. Then loosen the D4 x
25 Tapping Screw [9], the two D4 x 20 Tapping Screws [10] and the two D4 x 16 Tapping Screws [11].
Handle (A) [1] and Handle (B) [8] can be removed.
Fig. 3

--- 11 ---
(3) Removal of the Upper Cover [33] (Fig. 5)
Remove the Special Screw [53] and then remove the Chip Cover [54]. Remove the two M4 x 16
Machine Screws [32] and the two D4 x 65 Tapping Screws [31]. Then move the Upper Cover [33] in the
forward direction to remove it together with the Plunger [58A] and related parts.
Fig. 4
Fig. 5

--- 12 ---
(5) Disassembly of the Guide Roller [56] from the Upper Cover [33] (Fig. 7)
Extract the D5 x 19.8 Needle [55] which is press-fitted into the Upper Cover [33], and remove the Guide
Roller [56].
Fig. 7
(4) Removal of the Plunger [58A] and the Plunger Holder Ass'y [35] from the Upper Cover [33] (Fig. 6)
Remove the Rubber Cushion [37]. Remove the two M4 Seal Lock Flat Hd. Screws [66] and then
remove the Connector [39]. Pull out the D6 x 47 Pin [36] from the Upper Cover [33]. Pull out the
Plunger [58A] downward from the Upper Cover [33]. Remove the Plunger Holder Ass'y [35] together
with the O-ring [57] from the Upper Cover [33]. Remove the Connector Holder [38] and the two Springs
[34] from the Upper Cover [33].
Fig. 6

--- 13 ---
(6) Disassembly of the Weight Holder [43] from the Gear Cover [51] (Fig. 8)
First, remove the D8 Retaining Ring [67] from the end of the Spindle [49]. Then, being very careful not
to lose the Orbital Pin [70], pull out the Weight Holder [43] together with the Gear [47], the three
Balance Weights [45], and related parts from the Gear Cover [51].
Fig. 8
(7) Disassembly of the Weight Holder [43] from the Gear Cover [51] (Fig. 9)
Remove the M5 x 12 Hex. Socket Hd. Bolt [69] from the Weight Holder [43]. Washer (A) [44], the three
Balance Weights [45], the Orbital Cam [46], and then Washer (A) [44] can be removed in that order.
Fig. 9

--- 14 ---
(9) Disassembly of the Change Knob [72] from the Gear Cover [51] (Fig. 11)
Being very careful not to lose Spring (C) [73] and the D3.97 Steel Ball [74] inside the Change Knob
[72], remove the D5 Retaining Ring (E-Type) [75] from the end of the Change Knob [72], and remove
the Change Knob from the Gear Cover [51].
Fig. 11
(8) Disassembly of the Gear Cover [51] and the Housing [25] (Fig. 10)
Prior to disassembly, remove the two Carbon Brushes [29] as described in the Instruction Manual.
Remove the two D4 x 30 Tapping Screws [50] from inside the Gear Cover [51]. Then move the Gear
Cover [51] toward the front to remove it together with the Armature [19].
Fig. 10

--- 15 ---
(10) Removal of the Carbon Brushes [29] from the Housing [25]
For removal of the Carbon Brushes [29], please refer to the Handling Instructions.
(11) Removal of Wiring Block (C) [28] (Fig. 12)
Remove the two D4 x 16 Tapping Screws [15]. Wiring Block (C) [28] can then be removed by pulling it
toward the rear while holding the Housing [25].
10-2. Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse. However, special
attention should be given to the following points:
(1) Installation of the Carbon Brushes [29]
For installation of the Carbon Brushes [29], please refer to the Instruction Manual.
Fig. 12
(2) Assemble Spring (C) [73] and the D3.97 Steel Ball
[74] in the Change Knob [72] as shown in
Fig. 13.
Fig. 13
Gear Cover [51] D3.97 Steel Ball [74]
Spring (C) [73]
D5 Retaining
Ring [75]
Change Knob [72]

--- 16 ---
(6) When installing the Plunger Holder Ass'y [35]
in the Upper Cover [33], ensure that the
O-Ring [57] is properly mounted at the lower
portion of the Plunger Holder Ass'y [35], as
shown in Fig. 16. Also, ensure that the two
Springs [34] are properly mounted between
the Plunger Holder Ass'y [35] and the Upper
Cover [33] (Fig. 16).
Fig. 16
Upper Cover
[33]
Spring [34] Plunger Holder
Ass'y [35]
O-Ring [57]
(3) Carefully ensure that two Washers (A) [44], the
Orbital Cam [46], and the three Balance Weights [45]
are assembled as shown in Fig. 14.
Fig. 14
(4) During reassembly, be very careful not to forget to
install the Felt [71] at the lower portion of the Orbital
Cam [46], as shown in Fig. 15.
(5) Grease
Insert 20 g of Nippeco SEP-3A Grease inside the
Gear Cover. Also liberally apply grease to the following
portions:
•the teeth of the Gear [47]
•the slide contact portions of the Balance Weights [45]
•inside of the Needle Bearing [42]
•inside of the Connector [39]
•the slide contact portions of the Plunger [58A]
•the Plunger Holder Ass'y [35] surfaces in sliding
contact with the Connector [39]
Fig. 15
Orbital Cam [46]
Washer (A) [44]
Gear [47]
Spindle [49]
Weight Holder [43]
Washer (A) [44]
Balance Weights [45]
Orbital Cam [46]
Orbital Pin [70]
Felt [71]
Gear Cover
[51]

--- 17 ---
(8) Install Handle (A) [1] and Handle (B) [8] so that their pawls (two on Handle (A), one on Handle (B)) are
properly inserted into the grooves provided on the Gear Cover [51] (Fig. 18).
Fig. 18
(7) After confirming that the Packing [40] and the Rubber
Cushion [37] are properly installed, fit the Upper
Cover [33] to the Gear Cover [51] so that the
Connecting Piece [41] properly enters the Connector
[39] (Fig. 17).
Fig. 17
Plunger [58A]
Rubber
Cushion [37]
Upper Cover [33]
Connector [39]
Connecting Piece [41]
Pawl
Pawls
Grooves