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TRACTOR -- MODEL NUMBER 917.272068
KOHLER ENGINE-MODEL NUMBER CV490, TYPE NUMBER 27507
CYLINDER HEAD/VALVE/BREATHER
CRANKCASE
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 25-351-01-S Lifter, valve (2) 1 12-032-03-S
2 12-755-94-S Kit, cylinder head (Includes 2 12-067-12-S
3-17, Gaskets 12 041 01-S
(Qty. 2), 12 041 02-S, & 12 3 12-445-02-S
041 03-S) 4 M-83g025-S
3 12-411-03-S Rod, push (2)
4 12-041-10-S Gasket, cylinder head 5 24-380-13-S
5 12-017-01-S Valve, intake (Std.) 6 12-010-31-S
6 12-016-01-S Valve, exhaust (Std.) 7 12-422-08-S
7 25-139-60-S Plug, allen hd. pipe 1/8" 12-422-09-S
8 12-318-36-S Cylinder Head 12-422-10-S
9 25-186-01-S Arm, rocker (2)
10 12-599-03-S Pivot, rocker arm (2) 12-422-11-S
11 M°640034-S Screw, hex. flange 12-422-12-S
M6xl.0x34 (2) 12-422-13-S
12 12-089-34-S Spring, valve (2) 12-422-07-S
13 12-173-01-S Cap, valve spring (2) 8 12-144-28-S
14 12-755-03-S Kit, retainer (2) 9 12-874-07-S
15 12-468-05-S Washer, plain 13/32"
16 12-112-13-S Spacer, head bolt exhaust 12-874-11-S
port 12-874-08-S
17 12-086-15-S Screw, hex. flange 12-874-09-S
M10x1.5x81 (5) 10 12 018 02-S
18 25-237-14-S Clamp, hose (2) 11 12-108-07-S
19 12-326-18-S Hose, breather 12-108-08-S
20 M-645016-S Screw, hex. flange 12-108-09-S
M6xl.0x20 (5) 12 12-067-11-S
21 12-096-45-S Cover, valve w/nipple 12-067-06-S
22 M-545010-S Screw, hex. flange 13 12-380-01-S
M5x0.8xl0 14 12-043-05-S
23 12-018-01-S Retainer, breather reed 15 M-631005-S
24 12-402-02-S Reed, breather 16 12-144-02-S
NOT ILLUSTRATED 17 52-139-09-S
12-017-02-S Valve, intake (.25) 18 12-755-64-S
12-016-02-S Valve, exhaust (.25)
19 X-25-102-S
20 12-032-01-S
21 M-631015-S
22 12-154-05-S
Seal, crankshaft
Crankcase (Use Short Block
12 522 51)
Strap, lifting
Screw, hex. flange
M8x1.25x25
Pin, locating (4)
Camshaft assembly
Shim, camshaft - blue (A.R.)
Shim, camshaft - red (A.R.)
Shim, camshaft - yellow
(A.R.)
Shim, camshaft - green (A.R.)
Shim, camshaft - grey (A.R.)
Shim, camshaft - black (A,R.)
Shim, camshaft - white (A.R.)
Shaft, balance
Piston w/Ring Set (Std.)
(Includes 11,12)
Piston wiring Set (.08)
Piston w/Ring Set (.25)
Piston wiring Set (.50)
Retainer, piston pin (2)
Ring Set (Std.)
Ring Set (.25)
Ring Set (.50)
Connecting Rod (Std.)
Connecting Rod (.25)
Pin, governor regulating
Gear, governor
Washer, plain 6 mm
Shaft, governor gear
Plug, cup
Kit, governor cross shaft w/
clip (Includes 22)
Washer, plain 1/4"
Seal, governor cross shaft
Washer, plain 6 mm
Clip, hitch pin
NOTE: All component dimensions given in U.S.
inches 1 inch = 25.4 mm
53