Spark Plug; Cleaning And Adjustment Clearance; Radiator; Checking Coolant Level, Adding Coolant - Kubota WG972-E4 Operator's Manual

18 PERIODIC SERVICE

SPARK PLUG

BCleaning and adjustment clearance
If the spark plug electrode or its insulator is soiled or is
covered with deposited carbon, it may cause engine
trouble. The soil, carbon deposits etc. can be brushed off
using a wire brush.
After cleaning, be sure to adjust for proper clearance.
C Tightening Torque
24.5 to 29.4 N-m (2.5 to 3.0 kgf-m, 18.0 to 21.6 ft-lbs)
(1) Spark plug (A) Clearance : 0.7 to 0.8 mm
(0.028 to 0.032 in.)

RADIATOR

Coolant will last for one day's work if filled all the way up
before operation start. Make it a rule to check the coolant
level before every operation.
To avoid personal injury or death:
A Do not stop the engine suddenly,
stop it after about 5 minutes of
unloaded idling.
A Work only after letting the engine and
radiator cool off completely (more
than 30 minutes after it has been
stopped).
A Do not remove the radiator cap while
coolant is hot. When cool to the
touch, rotate cap to the first stop to
allow excess pressure to escape.
Then remove cap completely.
If overheats should occur, steam
may gush out from the radiator or
recovery tank; Severe burns could
result.
BChecking coolant level, adding coolant
1. Remove the radiator cap, after the engine has
completely cooled, and check to see that coolant
reaches the supply port.
(1) Radiator pressure cap