Farmall 450D And W-450D Tractor Tune Up Info
Engine Model And Type	D-281
Compression Pressure (at cranking speed)(psi)	556-614*
High Idle (no load) Engine RPM / PTO RPM	1580 / 582
Low Idle (no load) Engine RPM / PTO RPM	625 / 230
Rated Load Speed Engine RPM / PTO RPM	1450 / 534
Horsepower (at load speed) PTO Shaft	47.4
Approximate Fuel Rate (at load speed) gals/hour	3.61-3.81
Firing Order	1-3-4-2
Valve Lash (hot)(inch)
Intake	.017
Exhaust	.017
Spark Plug Gap (inch)	.025
Distributor
Symbol	C
Breaker Point Opening (inch)	.020
Part Number	353892R91
Governor Spring Package	358107R91
Ignition Timing (spark advance BTDC unless otherwise specified) (degrees)
At 400 RPM (+ or - 2 Degrees	0
At high Idle Speed	8
Carburetor Liquid level (inches)
I.H.	9/16
Zenith	-
Carter	-
Marvel-Schebler	-
Diesel Timing
Static (Crankshaft Degrees)	TDC
Torque Control Adjustment	Refer to Pump Type Info
Additional Information	Refer to Construction Equipment Service Manual ISS-1012-Y
Torque Wrench Settings (foot pounds)
Cylinder Head	100
Manifold	50