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TRACTOR - - MODEL NUMBER 917.273180
KOHLER ENGINE - MODEL NUMBER CV490TYPE NUMBER 27532
CYUNDER HEAD/VALVE/BREATHER
CRANKCASE
KEY PART KEY PART
NO. NO. DESCRIPTION NO. N_ DESCRIPTION
1 25-351-01-S Lifter,valve (2) 1 12-032-03-S
2 12-755-97-S Kit, cylinder head (Includes 3-16, 2 N/A
Gaskets 12 041 01-S (Qty. 2), 3 12-445-02-S
12 041 O2-S, & 12 041 03-S) 4 M-8390P-5-S
3 12-411-05-S Rod, push (2) 5 24-380-13-S
4 12-041-10-S Gasket, cylinder head 6 12-010-31-S
5 12-O17-01-S Valve, intake (Std.) 7 12.422-08-S
6 12-O16-01-S Valve, exhaust (Std.) 12-422-09-S
7 12-318-36-S Cyitnder Head 12.422-10-S
8 25-186-01-S Arm, rocker(2) 12-422-11-S
9 12-599-03-S Pivot, rockerarm (2) 12-422-12-S
10 M-640034-S Screw, hex. flange M6xl.0x34 (2) 12-422-13-S
11 12-089-34-S Spring, valve (2) 12-422-07-S
12 12-173-01-S Cap, valve spring (2) 8 12-144-28-S
13 12-755-03-S Kit, retainer (2) 9 12-874-07-S
14 12-468-05-S Washer, plain 13/32_
15 12-112-13-S Spacer, head boltexhaust port 12-874-11 -S
16 20-086-02-S Screw, hex.flange M10x1.5x81 (5) 12-874-O8-S
17 25-237-14-S Clamp, hose (2) 12-874-09-S
18 12-326-18-S Hose, braather 10 12 018 02-S
19 M-645016-S Screw, hex.flange M6xl.0x20 (5) 11 12-108-07-S
20 12-096-47-S Cover, valve w/nipple
12-108-08-S
21 M-545010-S Screw, hex. flange M5x0.8xl0
12-108-09-S
2;2 66-018-04-S Retainer, breather reed
12 12-067-11 -S
23 12-402-02-S Reed, breather
12-067-12-S
13 12-380-01-S
NOT ILLUSTRATED
12-017-02-S Valve, intake (.25) 14 12-043-05-S
12-016-02-S Valve, exhaust (.25) 15 M-631005-S
16 12-144-02oS
17 52-139-09-S
18 12-755-64-S
19 X-25-102-S
20 12-032-01-S
21 M-631015-S
22 12-154-05-S
Seal, crankshaft
Crankcase (Use Short Block12 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 (KR.)
Shim, camshaft- gray(A.R.)
Shim, camshaft - black(A.R.)
Shim, camshaft - white (A.R.)
Shaft, balance
Piston w/Ring Set (Std.)
(Includes 11,12)
Piston w/Ring Set (.08)
Piston w/Ring Set (.25)
Piston w/Ring 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, governorcross shaftw/cUp
(Includes 22)
Washer, pJain1/4"
Seal, governor crossshaft
Washer, plain6 mm
Clip, hitch pin
NOTE: Allcomponent dimensions glvea in U.S. inches
1 inch = 28.4 mm
51