| Super A And AV Tractor Tune Up Info |
| Engine Model And Type |
C-113 Gas |
C-113 Dist. |
C-123 Gas Fire Crater Pistons+ |
C-123 Dist. Flat Top Pistons+ |
C-123 Gas Fire Crater Pistons++ |
C-123 Dist. Flat Top Pistons++ |
| Compression Pressure (at cranking speed)(psi) |
125 |
95 |
142 |
101 |
125 |
101 |
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| High Idle (no load) Engine RPM / PTO RPM |
1575 / 609 |
1575 / 609 |
1540 / 595 |
1540 / 595 |
1540 / 595 |
1540 / 595 |
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| Low Idle (no load) Engine RPM / PTO RPM |
525 / 203 |
525 / 203 |
525 / 203 |
525 / 203 |
525 / 203 |
525 / 203 |
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| Rated Load Speed Engine RPM / PTO RPM |
1400 / 541 |
1400 / 541 |
1400 / 541 |
1400 / 541 |
1400 / 541 |
1400 / 541 |
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| Horsepower (at load speed) PTO Shaft |
18.0 |
15.2 |
22.1 |
19.2 |
23.1 |
20.2 |
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| Approximate Fuel Rate (at load speed) gals/hour |
1.57-1.72 |
1.51-1.63 |
2.10-2.20 |
2.04-2.10 |
2.30-2.40 |
2.08-2.30 |
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| Firing Order |
1-3-4-2 |
1-3-4-2 |
1-3-4-2 |
1-3-4-2 |
1-3-4-2 |
1-3-4-2 |
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| Valve Lash (hot)(inch) |
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| Intake |
.014 |
.014 |
.014 |
.014 |
.014 |
.014 |
| Exhaust |
.014 |
.014 |
.014 |
.014 |
.014 |
.014 |
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| Spark Plug Gap (inch) |
.023 |
.023 |
.023 |
.023 |
.023 |
.023 |
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| Distributor |
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| Symbol |
J |
J |
J |
J |
J |
J |
| Breaker Point Opening (inch) |
.020 |
.020 |
.020 |
.020 |
.020 |
.020 |
| Part Number |
357935R91 |
357935R91 |
357935R91 |
357935R91 |
357935R91 |
357935R91 |
| Governor Spring Package |
358108R91 |
358108R91 |
358108R91 |
358108R91 |
358108R91 |
358108R91 |
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| Ignition Timing (spark advance BTDC unless otherwise specified) (degrees) |
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| At 400 RPM (+ or - 2 Degrees |
0 |
0 |
0 |
0 |
0 |
0 |
| At high Idle Speed |
30 |
30 |
30 |
30 |
30 |
30 |
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| Carburetor Liquid level (inches) |
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| I.H. |
- |
- |
- |
- |
- |
- |
| Zenith |
1/2 |
1/2 |
1/2 |
1/2 |
1/2 |
1/2 |
| Carter |
17/64 |
17/64 |
17/64 |
17/64 |
17/64 |
17/64 |
| Marvel-Schebler |
- |
- |
- |
- |
- |
- |
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| Torque Wrench Settings (foot pounds) |
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| Cylinder Head |
80 |
80 |
80 |
80 |
80 |
80 |
| Manifold |
20 |
20 |
20 |
20 |
20 |
20 |