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TRACTOR-
- MODEL
NUMBER
917.273130
KOHLER ENGINE-MODEL
NUMBER CV490, TYPE NUMBER 27508
CYLINDER
H EADNALVFJBREATH
ER
CRANKCASE
KEY
PART
KEY
PART
NO,
NO,
DESCRIPTION
NO,
NO,
DESCRIPTION
1
25_351-01S Liften valve (2)
2
12_755-94_S Kit, cylinder head (Includes
3417, Gaskets 12 041 014S
(Qty. 2), 12 041 02-8, & 12
041 0348)
3
12_411-03_S Rod, push (2)
4
12_041410S Gasket, cylinder head
5
12_017401S Valve, intake (Std.)
12_017402S Valve, intake (.25)
6
12_016-01 S Valve. exhaust (Std.)
12-016-02 S Valve, exhaust (.25)
7
25q 39-60-S Plug, allen hd. pipe 1/8"
8
12_318436S Cylinder Head
9
25_186-01uS Arm, rocker (2)
10
12 599-03 S Pivot, rocker arm (2)
11
M-640034-S Screw. hex. flange M6xl.0x34
2)
12
12_089-01 S Spring, valve (2)
13
12q73401_S Cap, valve spring (2)
14
12_755-03_S Kit, retainer (2)
15
12_468405_SWasher, plain 13/32"
16
12q 12413_S Spacer, head bolt exhaust port
17
12_086-15_S Screw, hex.flange
M10x1.5x81 (5)
18
25_237414_S Clamp, hose (2)
19
12 326-03 S Hose, breather
20
M-6450204S Screw. hex. flange
M6x1.0x20 (5)
21
12 096-07_S Cover. valve w/nipple
22
M-5450104S Screw. hex. flange
M5x0.Sx10
23
12_018401 S Retainer. breather reed
24
12_402-02_S Reed, breather
1
12_032_03 S Seal, crankshaft
2
Block, cylinder (Use Short
Block 12 522 51)
3
12 445_02-S Strap, lifting
4
M-839025-S Screw, hex. flange
M8x1.25x25
5
24_380q3-S Dowel, locating (4)
6
12_755 49 S Kit, camshaft (Includes 7,8)
7
12_089_31 S Spring, actuating
8
12422_08_S Shim, camshaft (A.R.) blue
12-422_09_S Shim. camshaft (A.R.) red
12422q0_S
Shiml camshaft (A.R.) yellow
12422q 1_S Shiml camshaft (A.R.) green
12422q2-S
Shim. camshaft (A.R.) gray
12422q3
S Shiml camshaft (A.R.) black
12422 07 S Shim, camshaft (A.R.) white
9
12_144 28 S Shaft, balance
10
12_874_07_S Piston w/Ring Set (Std.)
(Includes 11,12)
12-874 11S Piston w/Ring Set (.08)
12-874 08_S Piston w/Ring Set (.25)
12-874_09_S Piston w/Ring Set (.50)
11
12 018 02_S Retainer, piston pin (2)
12
12q08 07 S Ring Set (Std.)
12q08 08_S Ring Set (.25)
12q08 09 S Ring Set (.50)
13
12-067q 1_S Connecting Rod (Std.)
12-067_06_S Connecting Rod (.25)
14
12-380 01_S Pin, governor regulating
15
12 043 05 S Gea£ governor
16
M-6310054S Washe£ plain 6 mm
17
12q44 02-S Shaft, governor gear
18
52q39-09 S Plug, cup
19
12_755_64_S Kit, gov. cross shaft w/clip
(Includes 23)
20
X4254102_S Washe£ plain 1/4"
21
1203201uS
Seal, governor cross shaft
22
M-631015-S Washe£ plain 6 mm
23
12q54_05 S Clip, hitch pin
NOTE: All component
dimensions
given in U.S.
inches 1 inch = 25.4 mm
51
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