Super H, HV, 4 Series Tractor Tune Up Info
Engine Model And Type
C-164 Gas
C-164 Dist.
C-169 Gas Fire Crater Pistons*
C-169 Flat Top Pistons*
Compression Pressure (at cranking speed)(psi)
130
85
150
95
High Idle (no load) Engine RPM / PTO RPM
1815 / 594
1815 / 594
1815 / 594
1815 / 594
Low Idle (no load) Engine RPM / PTO RPM
425 / 139
425 / 139
425 / 139
425 / 139
Rated Load Speed Engine RPM / PTO RPM
1650 / 540
1650 / 540
1650 / 540
1650 / 540
Horsepower (at load speed) PTO Shaft
30.2
26.5
33.6
30.0
Approximate Fuel Rate (at load speed) gals/hour
2.87 Max.
2.81 Max.
3.00-3.20
2.94-3.14
Firing Order
1-3-4-2
1-3-4-2
1-3-4-2
1-3-4-2
Valve Lash (hot)(inch)
Intake
.017
.017
.017
.017
Exhaust
.017
.017
.017
.017
Spark Plug Gap (inch)
.023
.023
.023
.023
Distributor
Symbol
J
J
J S
J
Breaker Point Opening (inch)
.020
.020
.020
.020
Part Number
353935R91
353935R91
364653R91
353935R91
Governor Spring Package
358108R91
358108R91
362725R91
358108R91
Ignition Timing (spark advance BTDC unless otherwise specified) (degrees)
At 400 RPM (+ or - 2 Degrees
0
0
0
0
At high Idle Speed
30
30
22+
30
Carburetor Liquid level (inches)
I.H.
9/16
9/16
9/16
9/16
Zenith
-
-
-
-
Carter
-
-
-
-
Marvel-Schebler
-
-
-
-
Torque Wrench Settings (foot pounds)
Cylinder Head
70
70
70
70
Manifold
50
50
50
50
* Increased Bore
+ 20 Degree Spark Advance When Cylinder Head Assembly 364439R91 is used on Engine