130 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	1575 / 609	1575 / 609	1575 / 609
Low Idle (no load) Engine RPM / PTO RPM	425 / 164	425 / 164	425 / 164
Rated Load Speed Engine RPM / PTO RPM	1400 / 541	1400 / 541	1400 / 541
Horsepower (at load speed) PTO Shaft	21.8	22.5	17.5
Approximate Fuel Rate (at load speed) gals/hour	1.85-1.95	2.10-2.20	1.74-1.83
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 AB	X
Breaker Point Opening (inch)	.020	.020	.020
Part Number	366928R91	372712R91	366928R91
Governor Spring Package	366942R91	372785R91	366942R91
Ignition Timing (spark advance BTDC unless otherwise specified) (degrees)
At 400 RPM (+ or - 2 Degrees	1	1	1
At high Idle Speed	25	22	25
Carburetor Liquid level (inches)
I.H.	-	-	-
Zenith	1/2	1/2	1/2
Carter	-	-	-
Marvel-Schebler	9/32	9/32	9/32
Torque Wrench Settings (foot pounds)
Cylinder Head	80	80	80
Manifold	20	20	20