All dimensions in inches.

Model (Horsepower)				KT17 (17)	KT19 (19)	K582 (23)
General	Bore x Stroke			3.125 x 2.750	3.125 x 3.063	3.500 x 3.000
	Displacement Cu. In.			42.18	47.0	57.73
	Max. Operating RPM			3600	3600	3600
Camshaft	Sleeve I.D. Installed			-	-	Rear 1.251/1.252 Front 1.876/1.877
	End Play			.003/.013	.003/.013	.003/.024
Connecting Rod	Running Clearance	Rod to Crankpin (New)		.0012/.0024	.0012/.0024	.001/.002
		Rod to Crankpin Wear Limit		.0029	.0029	.0025
		Rod to Piston Pin (New)		.0006/.0011	.0006/.0011	.0003/.0008
	Small End I.D. (New)			.6255/.6258	.7507/.7510	.8757/.8760
Crankshaft	Main	Sleeve Bearing Journal	New	1.7412/1.7422	1.7412/1.7422	1.7495/1.7500
			Wear Limit	1.7407	1.7407	1.7490
		Ball/Roller Bearing Journal	New	-	-	1.7716/1.7721
			Wear Limit	-	-	1.7711
		Max. Out of Round (Sleeve)		.0005	.0005	.0005
		Max. Taper (Sleeve)		.001	.001	.001
		Running Clearance (Sleeve)	New (Max.)	.0049	.0049	.004
			Wear Limit1	.0059	.0059	.005
		New Sleeve Bearing I.D. Installed		1.7439/1.7461	1.7439/1.7461	1.7515/1.7535
	Crankpin	New		1.3738/1.3733	1.4998/1.49932	1.6250/1.6245
		Max. Wear Limit		1.3728	1.49882	1.6240
		Max. Out of Round		.0005	.0005	.0005
		Max. Taper		.001	.001	.001
	End Play			.002/.014	.002/.014	.004/.010
Cylinder Bore	Inside New Diameter Max. Wear Limit			3.1255/3.1245	3.1255/3.1245	3.5005/3.4995
				3.128	3.128	3.503
	Max. Out of Round			.002	.002	.005
	Max. Taper			.0015	.0015	.002
Cylinder Head	Max. Out of Flatness			.003	.003	.003
Model (Horsepower)				KT17 (17)	KT19 (19)	K582 (23)
Ignition	Spark Plug Type & Gap		Type3	RY17YC	RV17YC	RH-10
			Battery	.025	.025	.025
			Gaseous Fuels	.018	.018	.018
	Nominal Point Gap			.020	.020	.020
Piston	Service Replacement Sizes			.003 - .010 - .020 - .030
	Thrust Face O.D.4		New	3.118/3.117	3.121/3.120	3.4941/3.4925
			Max. Wear Limits	3.113	3.113	3.491
	Thrust Face to Bore Clearance (New)1			.0065/.0085	.0035/.0055	.007/.010
	Ring End Gap		New Bore	.010/.020	.010/.020	.010/.020
			Used Bore (Max.)	.030	.030	.030
	Max. Ring Side Clearance			.004	.004	.006
Piston	Service Replacement Sizes			.003 - .010 - .020 - .030
	Thrust Face O.D.5		New	3.1210/3.1203	3.1215/3.1208	-
			Max. Wear Limits	3.118	3.119	-
	Thrust Face to Bore Clearance (New)1,5			.0035/.0052	.0030/.0047	-
	Ring End Gap		New Bore6	.010/.020	.010/.023	-
			Used Bore (Max.)6	.032	.032	-
	Max. Ring Side Clearance			.006	.006
Piston Pin	Outside Diameter			.6247/.6249	.7499/.7501	.87521.8754
Valves	Guide Reamer Size			.3125	.3125	.3125
	Tappet Clearance(Cold)		Intake	.003/.006	.003/.006	.008/.010
			Exhaust	.011/.014	.011/.014	.017/.020
	Minimum Lift (Zero Lash)		Intake	.280	.280	.318
			Exhaust	.280	.280	.318
	Minimum Valve Stem O.D.		Intake	.3103	.3103	.3103
			Exhaust	.3088	.3088	.3074
	Nominal Angle Valve Seat			45o	45o	45o
	Guide I.D. Max. Wear Limit1		Intake	.005	.005	.006
			Exhaust	.007	.007	.008

¹Subtract O.D. of inner part from I.D. of outer part.
²Pre Series II 1.3733/1.3738, Maximum Wear 1.3728.
³Champion spark plugs or equivalent.
⁴Measure just below oil ring groove and at right angles to piston pin.
⁵Measure 1/2' above the bottom of the piston skirt.
⁶Top and center compression rings.

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