Every 3000 Hours; Checking Injection Pump; Every 1 Year; Checking Fuel Line - Kubota L2501 Operator's Manual

70 PERIODIC SERVICE
Always use a 50/50 mix of long-life coolant and clean soft
water in KUBOTA engines.
Consult your local KUBOTA Dealer concerning coolant for
extreme conditions.
1. Long-life coolant (hereafter LLC) comes in several
types. Use ethylene glycol (EG) type for this engine.
2. Before employing LLC-mixed cooling water, fill the
radiator with fresh water and empty it again.
Repeat this procedure 2 or 3 times to clean up the
inside.
3. Mixing the LLC
Premix 50% LLC with 50% clean soft water. When
mixing, stir it up well, and then fill into the radiator.
4. The procedure for the mixing of water and antifreeze
differs according to the make of the antifreeze and the
ambient temperature. Refer to SAE J1034 standard,
more specifically also to SAE J814c.
Freezing Point
Vol %
Anti-freeze
50 -37
D At 1.013 x 10 Pa (760mmHg) pressure (atmospheric).
A higher boiling point is obtained by using a radiator
pressure cap which permits the development of
pressure within the cooling system.
5. Adding the LLC
(1) Add only water if the mixture reduces in amount
by evaporation.
(2) If there is a mixture leak, add the LLC of the same
manufacturer and type in the same mixture
percentage.
D Never add any long-life coolant of different
manufacturer. (Different brands may have
different additive components, and the engine
may fail to perform as specified.)
6. When the LLC is mixed, do not employ any radiator
cleaning agent. The LLC contains anticorrosive agent.
If mixed with the cleaning agent, sludge may build up,
adversely affecting the engine parts.
7. Kubota's genuine long-life coolant has a service life of
2 years. Be sure to change the coolant every 2000
hours or every 2 years whichever comes faster.
A The above data represent industry standards that
necessitate a minimum glycol content in the
concentrated antifreeze.

EVERY 3000 HOURS

BChecking Injection Pump
Consult your local KUBOTA Dealer for this service.
Boiling Point*
-34 108 226

EVERY 1 YEAR

BChecking Fuel Line
1. Check to see that all lines and hose clamps are tight
and not damaged.
2. If hoses and clamps are found worn or damaged,
replace or repair them at once.
(1) Fuel lines
(2) Clamp bands
A If the fuel line is removed, be sure to properly bleed the
fuel system.
(See "Bleeding Fuel System" in "SERVICE AS
REQUIRED" in "PERIODIC SERVICE" section.)
BChecking Intake Air Line
1. Check to see that hoses and hose clamps are tight and
not damaged.
2. If hoses and clamps are found worn or damaged,
replace or repair them at once.
(1) Hose
(2) Hose clamps