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When using the following chart it may be found that overhaul of major components or hydraulic
pressure adjustments are necessary. In this case it is recommended that your authorised dealer make
these repairs as they are properly equipped to do this work.
WARNING: PREVENT ACCIDENTS - ALWAYS Apply the parking brake, switch off the engine
and remove the ignition key before attempting to work on the mower.
FAULT
Hydraulic oil system
overheating
Excessive noise in
hydraulic system
Cylinders rotate in the
wrong direction
After initial satisfactory
operation machine loses
power.
TROUBLE SHOOTING
POSSIBLE CAUSE
Cylinders are tight against bottom blades
Low relief valve setting
Low oil level
Brakes engaged
Cutting cylinders tight on bottom blades
Excessive work rate
Hydraulic oil viscosity incorrect
Faulty pump
Faulty motor
Air leaking into system
Suction strainer blocked or damaged
Excessive oil viscosity due to cold
conditions
Low relief valve setting
Low hydraulic oil level
Back lap control lever not locked in the
'normal operation' position
Worn pump or motor
Low hydraulic oil level
Incorrect oil viscosity
Oil filter element blocked
Faulty pressure relief valve
Overheating
Leaks on suction hose
REMEDY
Adjust cylinder to bottom blade clearance
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Fill reservoir to correct level
Disengage brakes
Re adjust settings
Reduce work rate i.e., increase height of cut
or reduce forward speed
Drain and refill hydraulic oil reservoir with
correct grade viscosity oil, refer to
RECOMMENDED LUBRICANTS.
Identify noisy pump and service or replace
Identify noisy motor and service or replace
Tighten or replace hydraulic fittings
particularly in suction lines
Clean and replace suction strainer or renew
as necessary
Allow system to warm up
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Fill hydraulic oil reservoir to correct level
Lock the back lap control lever in the 'nor-
mal operation' position
Replace as necessary
Fill hydraulic oil tank to correct level
Renew oil in hydraulic tank with hydraulic
oil of correct viscosity grade, refer to
SPECIFICATIONS
Change filter element
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Incorrect hydraulic oil grade, refer - Problem
'HYDRAULIC OIL SYSTEM
OVERHEATING'
Check and tighten fittings. Replace hose if
necessary
1.75
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