Troubleshooting; Electrical System Problem Table - Stiga MPV 320W Workshop Manual

WORKSHOP MANUAL
MPV 320W / 520W
Summary
7.1 TROUBLESHOOTING .........................................................................48
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.2 SYSTEM AND COMPONENT DESCRIPTIONS .................................52
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.2.9
7.3 FUNCTIONAL CHECKS ......................................................................61
7.3.1
7.3.2
7.4 ELECTRICAL WIRING DIAGRAMS ....................................................63
7.4.1

7.1.1 Electrical system problem table

Below are some of the most common problems connected to the malfunctioning of the electrical
system are shown, with their probable cause and the remedial action to be taken.
PROBLEM
Engine does not start
Electromagnetic clutch
malfunction
7 - ELECTRICAL SYSTEM
Electrical system problem table ....................................................48
Safety device intervention table ....................................................49
Equipment ....................................................................................50
Electrical measure gauges ...........................................................50
Electrical measurements ..............................................................51
Wiring ...........................................................................................52
Battery ..........................................................................................53
Switches .......................................................................................55
Ignition switch ...............................................................................57
Solenoids and Relays ...................................................................57
Fuses ............................................................................................58
Relay and Fuse operating faults ....................................................59
Diodes and Rectifiers ...................................................................59
Electromagnetic clutch .................................................................60
General system checks ................................................................61
Checking the components ............................................................61
Wiring layout .................................................................................63

7.1 TROUBLESHOOTING

CAUSE
The ignition consent conditions
have not been complied with
Low battery
Uncertain battery cable con-
nections
Uncertain spark plug
connections or faulty spark
plugs
The operator is absent
The operator present switch is
faulty
Faulty switch, diode or clutch
Chapter
7 - ELECTRICAL SYSTEM
Comply with all consent conditions and all the mi-
croswitches
Recharge the battery
Check and clean the terminals
Check and replace
Comply with the consent conditions
Check and replace
Check the components
[ 7.2.9]
EDITION
2017
REMEDY
[ 7.1.2] - [ 7.2.3]
[ 7.2.2]
[
[ 7.2.3]
[ 7.2.3]
and replace them
PAGE
48 /
64
7.2.2]
[ 7.1.2]
- [ 7.2.8] -