Kubota EA330-E4 Series Workshop Manual page 38

EA330-E4, WSM
2) Valve Timing
The valve opening and closing timing is extremely
important for effectively taking air into the cylinder and
sufficiently discharging unnecessary exhaust gas.
An appropriate timing can be obtained by aligning
the alignment line on the crank gear, idle gear and cam
gear.
Intake valve open (I.D.)
Intake valve close (I.C.)
Exhaust valve open (E.O.)
Exhaust valve close (E.C.)
Fuel Injection Timing
(1) Intake
(2) Compression
(3) Combustion (Power)
(4) Exhaust
FI: Fuel Injection
T.D.C.:Top Dead Center
B.D.C.:Bottom Dead Center
1-M5
ENGINE
0.35 rad before T.D.C.
(20° before T.D.C.)
0.79 rad after B.D.C.
(45° after B.D.C.)
0.87 rad before B.D.C.
(50° before B.D.C.)
0.26 rad after T.D.C.
(15° after T.D.C.)
0.4320 to 0.4581 rad (24.75 to
26.25°) before T.D.C.
(a) 0.35 rad before T.D.C.
(20° before T.D.C.)
(b) 0.79 rad after B.D.C.
(45° after B.D.C.)
(c) 0.87 rad before B.D.C.
(50° before B.D.C.)
(d) 0.26 rad after T.D.C.
(15° after T.D.C.)
9Y1211018ENM0007US0
KiSC issued 05, 2015 A