Multi Pro 1200/1250
Page 5 -- 15
Electrical System
Neutral Engine Speed Control Coil
Theneutralenginespeedcontrolcoilisenergizedbythe
speedcontrolswitch andcruisemodule. Theenergized
coil becomes a magnet to hold the accelerator lever in
positionandmaintains engine speedfor sprayer opera-
tion when the machine is stationary.
Testing
1. Park machine on a level surface, stop engine, en-
gage parking brake and remove key from ignition
switch.
2. Locatecontrolcoilnexttoacceleratorleverunderthe
floorboard. Unplug coil connector from machine wire
harness (Fig. 21).
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the meter test leads together.
The meter will display a small resistance value (usually
0.5 ohms or less). This resistance is due to the internal
resistanceof themeter andtestleads.Subtract thisval-
uefromfrom themeasuredvalue ofthecomponentyou
are testing.
3. Using a multimeter(ohms setting), verify control coil
resistance between the two terminals of the connector.
Resistance should be from 10.2 to 11.2 ohms.
4. Ifcoildoesnotengagewhenvoltageisappliedorcoil
resistance is incorrect, replace control coil.
5. Connect the coil connector to the machine harness
after testing.
1. Accelerator lever
2. Speed control coil
3. Brake lever
Figure 21
1
2
3
Fusible Link Harness
TheMultiProsprayerusestwo(2)fusiblelinksforcircuit
protection. These fusible links are located in a harness
thatconnectsthestarterB+terminaltothewireharness
(Fig.22).Ifeitheroftheselinksshouldfail,currenttothe
protectedcircuitwill cease.Refertowire harness draw-
ings in Chapter 10 -- Electrical Drawings for additional
fusible link information.
Testing
Makesurethatignitionswitch isOFF.Disconnectnega-
tivebatterycablefrombatteryterminalandthendiscon-
nect positive cable from battery (see Battery Service in
theService andRepairs sectionofthis chapter).Locate
and unplug fusible link connector from machine wire
harness. Use a multimeter to make sure that continuity
existsbetweenthefusiblelinkterminals.Ifeitherfusible
link is open, replace the fusible link harness.
Afterfusiblelinktestingiscomplete,makesurethatfus-
iblelinkharnessissecurelyattachedtostarterB+termi-
nal and wire harness. Connect positive battery cable to
batteryterminal firstandthen connectnegativecable to
battery.
Figure 22
FUSIBLE LINK (14 GAUGE)
FUSIBLE LINK (16 GAUGE)
P01
STARTER B+
P02
TO MAIN HARNESS
Electrical
System
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