Jacobsen LF550 2WD Parts Manual page 140

LIGHTWEIGHT FAIRWAY MOWER
62.1 Connector Terminal Identification
Tier 4 Final / Stage 5 Engine Harness 4297202 (Included with Engine)
1 2 3
Crank Sensor
(U2)
1 2
Intake Throttle Valve
4
140
1 2
Cam Sensor
(U3)
3 4 5 6
(U6)
3 2 1
EGR Valve
(U8)
Terminal Identification is from open (Not Wire) end of connector
1
2
3
Rail Pressure Sensor
(U4)
1 2
Coolant Temperature
(U7)
1 2
Supply Pump
(M3)
3
4
3
2
8
7
6
11
10
12
17 16 15 14
22 21 20 19
27 26 25 24
32 31 30 29
37 36 35 34
42 41 40 39
J6
Connects to Mower Harness
Serial No. All
1
5
9
13
18
23
28
33
38