Toro Groundsmaster 300 Series Service Manual page 111

Check
engine
rpm
Low
Adjust,
use
tachometer
Repair or replace
transmission
(pump & motor)
Test lift
Ok
cylinders
for internal
leakage
Defective
Replace
hydraulic
cylinder
®
Groundsmaster 300 Series
Ok Ok
Inspect Check
underside of
hydraulic
cutting unit oil level
Excess debris Low
Fill to
Clean
proper
level
Inspect Inspect
Ok
Ok
charge implement
pump relief valve
Defective Defective
Repair Repair or shim
charge implement
pump relief valve
Inspect
Ok
lift valve
Defective
Repair
lift valve
Page 5 - 15
Inspect lift
Ok Ok
valve control
linkage
Binding, broken
or out of adjustment
Lubricate
or
repair
Check charge
Ok
pump
pressure/flow
Low
Test
Ok
steering
valve
Control valve
sticking
Repair or replace
steering
valve
Cutting Unit Will Not Lift or Lifts Slowly
Inspect
Ok
lift arm
pivots
Binding
Lubricate
or
repair
Inspect
Ok
inlet
filter
Loose or clogged
Tighten
or
replace
Troubleshooting