Craftsman 917.273170 - Manual (Page 49)

TRACTOR - - MODEL NUMBER 917.273170
KOHLER ENGINE-MODEL NUMBER CV490TYPE NUMBER 27532
CYLiNDER HEADA/ALVE/BREATHER CRANKCASE
KEY PART
KEY PART
NO. NO. description
NO. NO. description
1 25*351-01-3 Lifter, valve (2) 1 12-032-03-S Seal, crankshaft
2 12-755-97-3 Kit, cylinder head
2 N/A Crankcase (Use Short
(Includes 3-16, Gaskets Block 12 522 51)
12 041 01-3 (Qty.2), 3 12-445-02-S Strap, lifting
12 041 02-3, & 12 041 03-3) 4 M839025-S Screw, hex. flange M8x1.25x25
3 12-411-05-3 Rod, push (2) 5 24-380-13-S Pin, locating (4)
4 12-041-10-3 Gasket, cylinder head
6 12-010-31-S Camshaft assembly
5 12-017-01-3 Valve, intake (3td.) 7 12-422-08-S Shim, camshaft-blue(A.R.)
6 12-016-01-3 Valve, exhaust (Std.) 12-422-09-S Shim, camshaft - red(A.R.)
7 12-318-36-3 Cylinder Head
12-422-10-3 Shim, camshaft - yellow (A.R.)
8 25-186-01-3 Arm, rocker (2)
12-422-11-S Shim, camshaft - green (A.R.)
9 12-599-03-3 Pivot, rocker arm (2)
12-422-12-S Shim, camshaft - gray (A.R.)
10 M-640034-S Screw, hex, flange M6xL0x34
12-422-13-S Shim, camshaft - biack (A.R.)
(2)
12-422-07-S Shim, camshaft - white (A.R.)
11 12-089-34-3 Spring, valve (2) 8 12-144-28-S Shaft, balance
12 12-173-01-3 Cap, valve spring (2)
9 12-874-07-S Piston w/Ring Set (Std.)
13 12-755-03-3 Kit, retainer (2) (Includes 11,12)
14 12-468-05-3 Washer, plain 13/32”
12-874-11-S Piston w/Ring Set (.08)
15 12-112-13-3 Spacer, head bolt exhaust port 12-874-08-S Piston w/Ring Set (.25)
16 20-086-02-3 Screw, hex, flange 12-874-09-S Piston w/Ring Set (.50)
M10x1.5x81 (5)
10 12 018 02-3 Retainer, piston pin (2)
17 25-237-14-S Clamp, hose (2)
11 12-108-07-S Ring Set (Std.)
18 12-326-18-S Hose, breather 12-108-08-S Ring Set (.25)
19 M-645016-S Screw, hex, flange 12-108-09-S Ring Set (.50)
M6x1.0x20 (5)
12 12-067-11-S Connecting Rod (Std.)
20 12-096-47-3 Cover, valve w/nipple
12-067-12-3 Connecting Rod (.25)
21 M-545010-3 Screw, hex. flange M5x0.8x10 13 12-380-01-S Pin, governor regulating
22 66-018-04-3 Retainer, breather reed 14 12-043-05-S Gear, governor
23 12-402-02-3 Reed, breather 15 M631005-3 Washer, plain 6 mm
16 12-144-02-S Shaft, governor gear
NOT ILLUSTFÌATED 17 52-139-09-3 Plug, cup
12-017-02-3 Valve, intake (.25)
18 12-755-64-S Kit, governor cross shaft
12-016-02-3 Valve, exhaust (.25) w/clip (Includes 22)
19 X25102-S Washer, plain 1/4”
20 12-032-01-S Seal, governor cross shaft
21 M631015-S Washer, plain 6 mm
22 12-154-05-S Clip, hitch pin
NOTE : All component dimensions given in U.S,
inches 1 inch - 25.4 mm
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