230 Tractor Tune Up Info
Engine Model And Type
C-123 Gas
C-123 Gas Fire Crater Pistons
C-123 Dist.
Compression Pressure (at cranking speed)(psi)
160
142
95
High Idle (no load) Engine RPM / PTO RPM
1980 / 647
1980 / 647
1980 / 647
Low Idle (no load) Engine RPM / PTO RPM
425 / 139
425 / 139
425 / 139
Rated Load Speed Engine RPM / PTO RPM
1800 / 588
1800 / 588
1800 / 588
Horsepower (at load speed) PTO Shaft
27.0
28.2
21.8
Approximate Fuel Rate (at load speed) gals/hour
2.32-2.47
2.50-2.60
2.24-2.37
Firing Order
1-3-4-2
1-3-4-2
1-3-4-2
Valve Lash (hot)(inch)
Intake
.014
.014
.014
Exhaust
.014
.014
.014
Spark Plug Gap (inch)
.023
.023
.023
Distributor
Symbol
X
X
X
Breaker Point Opening (inch)
.020
.020
.020
Part Number
366928R91
366928R91
366928R91
Governor Spring Package
366942R91
366942R91
366942R91
Ignition Timing (spark advance BTDC unless otherwise specified) (degrees)
At 400 RPM (+ or - 2 Degrees
1
1
1
At high Idle Speed
30
30
30
Carburetor Liquid level (inches)
I.H.
-
-
-
Zenith
1/2
1/2
1/2
Carter
-
-
-
Marvel-Schebler
3/4
3/4
3/4
Torque Wrench Settings (foot pounds)
Cylinder Head
80
80
80
Manifold
20
20
20