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14 ► GTR20 User Manual
STORAGE
• Clean the unit thoroughly before storage. Do not use
water pressure.
• Always store the unit in a clean and dry facility.
• If the unit will be stored for a prolonged period (over
30 days), add a fuel additive to the fuel tank to prevent
the fuel from gumming. Run engine for a short period to
circulate the additive.
• Replace crankcase oil with new oil.
• Remove spark plugs and pour approximately 1 ounce
(30 ml) of engine oil into each cylinder. Replace spark
plugs and crank the engine slowly to distribute the oil.
• Check hydraulic reservoir for water. If water is found,
change the oil and circulate it through the tool hose and
tool. (See "HYDRAULIC SYSTEM MAINTENANCE"
earlier in this section).
• Disconnect tool hoses.
ENGINE MAINTENANCE
Follow the maintenance schedule and general mainte-
nance instructions in the engine maintenance and op-
eration manual furnished with the power unit.
SPARK PLUG
On power units equipped with Briggs & Stratton Engines,
ONLY Champion RC12YC or equivalent can be used.
For power units equipped with Honda Engines, ONLY
Denso J16CR-U or equivalent can be used.
Incorrect type spark plugs can produce radio frequency
interference that will corrupt and damage the controller.
Failure to use the correct spark plug could result in a
warranty that will not be considered.
HYDRAULIC SYSTEM MAINTENANCE
• Check hydraulic uid level daily. Add uid per speci-
cations in this manual. (See "HYDRAULIC FLUID" un-
der the section titled "OPERATING INSTRUCTIONS".
• Remove condensed moisture from the hydraulic
uid by pumping the hydraulic uid into a 5 gal/20 l con-
tainer through the pressure hose. Make sure the engine
is at idle when performing this procedure. When the hy-
draulic reservoir is empty turn the engine off immedi-
ately.
• Allow the uid to sit long enough for the water to settle
to the bottom of the container. Slowly pour the uid back
into the hydraulic tank, avoiding the water at the bottom
of the container.
• Each day, check hydraulic lines and ttings for leaks,
kinks, etc. Do not use your hand to perform this check.
• Change the hydraulic lter element every 200 hours
of operation. Change more often if cold, moist or dusty
conditions exist.
• Check oil cooler for debris. Remove debris with air
pressure.
ROUTINE MAINTENANCE