Multi Pro 1200/1250
Page 5 -- 14
Electrical System
Pump Drive Electric Clutch
Anelectricclutchisusedtoengageanddrivethespray-
er pump on the Multi Pro. Clutch operation is controlled
bythepumpcontrolswitchlocatedonthesprayconsole.
The electric clutch is mounted on the pump drive gear-
box output shaft and is coupled to the spray pump. The
clutch engages when current is applied to the clutch.
Testing
1. Park machine on a level surface, stop engine, en-
gage parking brake and remove key from ignition
switch.
2. Locate clutch on pump drive gearbox shaft. Unplug
clutch connector from machine wire harness (Fig. 20).
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 clutch coil
resistance between the two terminals of the connector.
Resistance should be 2.45 ohms.
4. If clutch does not engage when voltage is applied or
coil resistance is incorrect, replace clutch.
5. See Pump Drive Electric Clutch in the Service and
Repairs section of this chapter if clutch removal is nec-
essary.
6. Aftertesting,plugclutchconnectorintomachinewire
harness.
1. Electric clutch 2. Clutch connector
Figure 20
1
2
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