24
www.ferrismowers.com
Troubleshooting
Spraying System Operates Incorrectly
FAILURE MODE
CAUSE OF PROBLEM
CORRECTIVE ACTION
Spraying pattern is uneven or spraying
system does not operate.
The spray nozzle tips are out of posi-
tion.
Ensure the spray nozzles are not dam-
aged or that the nozzle mounting tab is
not bent.
The pressure relief valve is set incor-
rectly.
Verify that the pressure gauge reads
approximately 20 psi at full engine
speed when spraying. Adjust the
pressure relief knob in or out to obtain
this pressure. Tighten the locking nut
against the pressure relief knob.
The strainer or tip is clogged.
Remove the spray nozzle tip. Inspect
the tip orifice and the straniner to
ensure they are not clogged. Clean or
replace these components as neces-
sary.
The filter is clogged.
Remove the sediment bowl from the
filter housing and inspect the filter
screen. Clean or replace the screen as
necessary.
The pump won’t operate.
Inspect the pump fuse located in the
fuse holder by the battery box. En-
sure that either the console switch or
the foot platform switch actuates the
pump.
Spray tank volume is low.
Refill the spray tank. Note that in very
rough or hilly conditions, the liquid in
the spray tank may slosh around and
the tank discharge tube may starve
when the tank level is low. This can
cause poor spraying performance.
The engine speed is too low.
Operate the machine at full engine
speed. The spray system is designed
to operate most efficiently at full engine
speed.
The pump is worn or damaged.
Loosen the suction fitting on the pump
to verify that there is liquid flow to the
pump. Tighten the suction fitting nad
loosen the discharge fitting to verify
that the pump is operating correctly. If
there is no flow, replace the pump.
NOT
FOR
REPRODUCTION
