Engine - Engine and crankcase
Engine - General specification
Boomer™ 3040 CVT
WE
Boomer™ 3045 CVT
WE
Boomer™ 3050 CVT
WE
Boomer 3040
Boomer 3045
Boomer 3050
Engine Model
ISM N844
ISM N844L
ISM N844L
Number of Cylinders
4
4
4
Bore x Stroke
84 mm
x
90 mm
(
3.31 in
x
3.54 in
)
84 mm
x
100 mm
(
3.31 in
x
3.94 in
)
84 mm
x
100 mm
(
3.31 in
x
3.94 in
)
Displacement
1995 cm³
(
121.7 in³
)
2216 cm³
(
135.2 in³
)
2216 cm³
(
135.2 in³
)
Compression Ratio
22.5:1
22.5:1
22.5:1
Rated Speed
2600 RPM
2600 RPM
2800 RPM
Muffler
Horizontal
Firing Order
1-3-4-2
1-3-4-2
1-3-4-2
Low Idle Speed
1050 RPM
1050 RPM
1050 RPM
Maximum No-Load Speed
2825 RPM
2825 RPM
3025 RPM
Cylinder Arrangement
In-Line Vertical
In-Line Vertical
In-Line Vertical
Valve Arrangement
Overhead
Overhead
Overhead
Compression Pressure at
200 RPM
(cylinder speed)
29.4 ± 1.8 bar
(
427 ±
50 psi
)
29.4 ± 1.8 bar
(
427 ±
50 psi
)
29.4 ± 1.8 bar
(
427 ±
50 psi
)
Variation between cylinders
Engine - Torque
Boomer™ 3040 CVT
WE
Boomer™ 3045 CVT
WE
Boomer™ 3050 CVT
WE
Boomer 3040
Boomer 3045
Boomer 3050
Engine Model
ISM N844
ISM N844L
ISM N844L
TORQUE SPECIFICATION
Connecting Rod Cap Bolts
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
Main Bearing Retaining
Bolts
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
Relief Valve Assembly
59 - 69 N·m
(
43 - 51 lb ft
)
59 - 69 N·m
(
43 - 51 lb ft
)
59 - 69 N·m
(
43 - 51 lb ft
)
Crankshaft Main Bearing
Holder Bolts
Rear Main
25 - 29 N·m
(
18 - 22 lb ft
)
25 - 29 N·m
(
18 - 22 lb ft
)
25 - 29 N·m
(
18 - 22 lb ft
)
Center Mains
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
49 - 54 N·m
(
36 - 40 lb ft
)
Engine Rear Mounting Plate
12 - 17 N·m
(
9 - 12 lb ft
)
12 - 17 N·m
(
9 - 12 lb ft
)
12 - 17 N·m
(
9 - 12 lb ft
)
Flywheel Retaining Bolts
68 - 78 N·m
(
51 - 58 lb ft
)
68 - 78 N·m
(
51 - 58 lb ft
)
68 - 78 N·m
(
51 - 58 lb ft
)
Engine Front Plate
9 - 12 N·m
(
6 - 9 lb ft
)
9 - 12 N·m
(
6 - 9 lb ft
)
9 - 12 N·m
(
6 - 9 lb ft
)
Crankshaft Pulley Nut
274 - 333 N·m
(
202 - 246 lb
ft
)
274 - 333 N·m
(
202 - 246 lb
ft
)
274 - 333 N·m
(
202 - 246 lb
ft
)
Cylinder Head Bolts
98 - 103 N·m
(
72.3 - 76 lb
ft
)
98 - 103 N·m
(
72.3 - 76 lb
ft
)
98 - 103 N·m
(
72.3 - 76 lb
ft
)
Rocker Arm Assembly
27 - 39 N·m
(
20 - 29 lb ft
)
27 - 39 N·m
(
20 - 29 lb ft
)
27 - 39 N·m
(
20 - 29 lb ft
)
Rocker Arm Locknut
11 - 16 N·m
(
8 - 12 lb ft
)
11 - 16 N·m
(
8 - 12 lb ft
)
11 - 16 N·m
(
8 - 12 lb ft
)
Oil Tube Banjo Bolt
9 - 13 N·m
(
7 - 9 lb ft
)
9 - 13 N·m
(
7 - 9 lb ft
)
9 - 13 N·m
(
7 - 9 lb ft
)
Oil Pressure Switch
14 - 20 N·m
(
10 - 14 lb ft
)
14 - 20 N·m
(
10 - 14 lb ft
)
14 - 20 N·m
(
10 - 14 lb ft
)
Rocker Cover Bolts
7 - 12 N·m
(
6 - 9 lb ft
)
7 - 12 N·m
(
6 - 9 lb ft
)
7 - 12 N·m
(
6 - 9 lb ft
)
Glow Plugs
14 - 20 N·m
(
10 - 14 lb ft
)
14 - 20 N·m
(
10 - 14 lb ft
)
14 - 20 N·m
(
10 - 14 lb ft
)
Cooling Fan Bolts
9 - 13 N·m
(
7 - 9 lb ft
)
9 - 13 N·m
(
7 - 9 lb ft
)
9 - 13 N·m
(
7 - 9 lb ft
)
Balancer
Retaining Bolts
49 - 53.9 N·m
(
36 - 39 lb ft
)
49 - 53.9 N·m
(
36 - 39 lb ft
)
49 - 53.9 N·m
(
36 - 39 lb ft
)
48017760 14/11/2016
10.1 [10.001] / 3
Summary of Contents for Boomer 3040 CVT
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