Craftsman 917.273170 User Manual
Page 49
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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
49