Kohler KT17 Service Manual

SECTION 1
GENERAL INFORMATION
TOLERANCES, FITTED PARTS
(Cont'd)
KT17 KT19
KT21
Tappet Clearance in Guide-
Max . ..................... .0005/.0024" (.013/.060 mm)
.0005/.0024" (.013/.060 mm) .0005/.0024" (.013/.060 mm)
Valve Guide Interference
Fit in Cylinder ............. .005/.002" (.013/.051 mm)
.005/.002" (.013/.051 mm) .005/.002" (.013/.051 mm)
Valve Guide Ream
Diameter
......... ......... .312/.313" (7.925/7.950 mm)
.312/.313" (7.925/7.950 mm) .312/.313" (7.925/7.950 mm)
Pump Shaft to Crankcase
Running
.................. .001 0/.0025" (.025/.063 mm)
.0010/.0025" (.025/063 mm) .0010/.0025" (.025/.063 mm)
Pump Drive Gear End Play ..... .010/.029" (.254/.736 mm) .01 0/.029" (.254/.736 mm)
.010/.029" (.254/.736 mm)
WEAR TOLERANCES
Cylinder Bore-
New Diameter ............. 3.125" (79.375 mm)
3.125" (79.375 mm) 3.312" (84.125 mm)
Cylinder Bore-
Max. Wear Diameter ........
3.128" (79.45 mm)
3.128" (79.45 mm)
3.315" (84.201 mm)
Cylinder Bore -
Max. Taper
................
.0015'' (.038 mm) .0015'' (.038 mm) .0015" (.038 mm)
Cylinder Bore-
Max. Out of Round
.........
.002" (.05 mm)
.002"
(.05mm) .002" (.05mm)
Crankshaft Crankpin
New Diameter
...............
1.3733 (34.882/34.895 mm) 1.3733/ (34.882/34.895 mm) 1.4993/ (38.082/38.095 mm)
1.3738" 1.3738" 1.4998"
Series II ...... ............
1.3733/
(34.882/34.895
mm)
1.4993/
(38.082/38.095 mm)
1.3738"
1.4998"
Crankshaft Crankpin-
Max. Out of Round ......... .0005"
(.013
mm)
.0005" (.013 mm) .0005"
(.013
mm)
Crankshaft Crankpin-
Max. Taper .. .............. .001" (.025 mm) .001" (.025 mm) .001" (.025 mm)
Crankshaft Main Bearing
New Diameter ............. 1.7412/ (44.226/44.252 mm) 1.7412/ 44.226/44.252 mm) 1.7412/ (44.226/44.252 mm)
1.7422" 1.7422" 1.7422"
Crankshaft Main Bearing-
Min. Diameter .............
1.7407"
(44.22 mm) 1.7407" (44.22 mm) 1.7407" (44.22 mm)
Connecting Rod Crankpin
Bore -
New Diameter
...............
1.3750/
(34.925/34.943 mm) 1.3750/ (34.925/34.943 mm) 1.5010/ (38.125/38.143 mm)
1.3757"
1.3757" 1.5017"
Series II ............ ......
1.3750/ (34.925/34.943 mm) 1.5010/
(38.125/38.143 mm)
1.3757"
1.5017"
Connecting Rod Crankpin
Bore- Max. Diameter
...............
1.3765 (34.963 mm)
1.3765 (34.963 mm) 1.5025 (38.164 mm)
Series II .......... ........ 1.3765 (34.963 mm) 1.5025 (38.164 mm)
Connecting Rod Wristpin
Bore- New Diameter .... .... .62565"
(15.891 mm)
.7511" (19.078 mm) .85975" (21.837 mm)
Piston Thrust Face-
Max. Wear Dia. * ............ 3.1165" (79.159 mm) 3.1165" (79.159 mm) 3.303" (83.896 mm)
*Measured just below oil ring at right angles to pin.
8

Kohler KT17 Specifications

General

Cooling System	Air-cooled
Type	Horizontal shaft
Horsepower	17 hp
Fuel Type	Gasoline
Displacement	0.694 liters (694 cc)
Power	17 HP (12.7 kW) @ 3600 RPM
Ignition System	Magneto
Oil Capacity	1.9 L (2.0 US qt)
Starter	Electric
Bore x Stroke	3.03 x 2.95 inches (77 mm x 75 mm)