Service Manual
Removal and Inspection (Fig. 23)
IMPORTANT: Make sure to remove and neutralize
chemicals
from spray components before disas-
sembly. Wear protective clothing, chemical resist-
ant gloves, and eye protection during repair.
1. Park machine on a level surface, stop engine, en-
gage parking brake, and remove key from the ignition
switch.
2. Remove master boom valve handle, spray control
panel, and spray console from machine (Fig. 24).
3. Loosen and remove nut that secures flow sensor to
housing (Fig. 25). Carefully remove flow sensor from
flowmeter housing.
4. Clean rotor, rotor shaft, and flowmeter sensor if re-
quired (see Operator’s Manual).
5. With the flow sensor harness connected to the ma-
chine and the ignition key in the ON position, slowly spin
the flowmeter rotor
. The LED on the flowmeter should il-
luminate as a rotor magnet passes the flow sensor and
should g
o out as the next rotor magnet passes the sen-
sor.
NOTE: When using a magnet to check the flowmeter
,
make sure to alternately use both north and south poles
of the magnet.
6. If the flowmeter LED does not flash, remove rotor
a
nd rotor shaft from sensor. With the flowmeter harness
connected to the machine and the ignition key in the ON
position, slowly pass alternate poles of a magnet past
the flow sensor. If the flowmeter LED flashes as the
magnet poles pass the sensor, replace the rotor and ro-
tor shaft. If the flowmeter LED does not flash as the mag-
net poles pass the sensor, replace the flow sensor.
7. If necessary, remove flowmeter housing using Fig-
ures 23 and 25 as guides (also see Spray Control (Multi
Pro 1200) in this section). Discard all removed o–rings
and gaskets.
Assembly (Fig. 23)
NOTE: Coat all o–rings with vegetable oil before instal-
lation to reduce the chance of
damage during assembly.
NOTE: When installing flow sensor into housing, make
sure t
o align locating pin on sensor with hole in housing.
1. Reassemble flowmeter using Figures 23 and 25 as
guides. Replace all removed o–rings and gaskets.
2. Operate spray system and check for leaks.
3. Install spray console, spray control panel, and mas-
ter boom valve handle to machine (Fig. 24).
2
1
3
Figure 24
1. Boom valve handle 3. Spray console
2. Spray console panel
2
1
Figure 25
1. Flowmeter 2. Hose to boom valves
1
2
3
3
Figure 26
1. Rotor shaft 3. Rotor magnet
2. Rotor
Spray
System
Multi Pro 1200/1250
Page 6 – 27
Spray System