Troy-bilt engine (170-to) – Troy-Bilt 640 Series User Manual
Page 9
Troy-Bilt Engine (170-TO)
Part No.
Part Description
Ref
No.
Qty.
751-10806
Air Filter Heating Pipe Base
20
1
751-10792
Ignition Complete
22
1
751-10818
Air Filter Housing
24
1
751-10794
Air Filter
24
1
751-10796
Fuel Tank
28
1
751-10790
Recoil Starter Assembly
34
1
751-10649
Fuel Filler Cap Complete
38
1
751-10654
Governor Spring
44
1
751-10657
Stud 8 × 34
57
2
751-10292
Spark Plug
58
1
751-10793
Muffler
64
1
751-10662
Dipstick Decoration Cover
65
1
751-10648
Push Rod Kit
71/72
—
Valve Lifter
71
2
Push Rod
72
2
751-10647
Valve Kit
73/74
—
Inlet Valve
73
1
Exhaust Valve
74
1
751-10651
Fuel Tank Nipple
79
1
751-10655
Dipstick
82
1
751-10656
Engine/Dipstick Cover
83
1
751-10797
Carburetor
90
1
751-10799
Cylinder Head
—
—
Rocker Arm
51
2
Valve Adjusting Nut
52
2
Pivot Locking Nut
53
2
Cylinder Head Complete
54
1
Dowel Pin
56
2
Muffler Gasket
59
1
Part No.
Part Description
Ref
No.
Qty.
751-10798
Short Block
—
—
Bolt
1
6
Oil Filler Plug
2
1
O-Ring
3
1
Oil Seal
4
1
Left Crankcase Cover
5
1
Radial Ball Bearing
6
1
Camshaft Assembly
7
1
Dowel Pin
8
1
Dowel Pin
9
1
Case Cover Packing
10
1
Crankshaft Complete
11
1
Governor Kit
12
1
Radial Ball Bearing
13
1
Lock Pin
14
1
O-Ring
15
1
Governor Arm
16
1
Crankase Complete
17
1
Oil Seal
21
1
Carburetor Packing
25
1
Bolt
28
1
Nut
29
2
Head Cover Gasket
47
1
Cylinder Head Gaskket
55
1
Carburetor Insulator Packing
61
1
Carburetor Insulator
62
1
Connecting Rod Assembly
66
1
Piston Pin Clip
67
2
Piston
68
1
Piston First Ring Set
69
1
Piston Pin
70
1
751-10307
Flywheel Key (Not Shown)
—
—
751-10800
Carb. Kit Major (Not Shown)
—
—
751-10801
Gasket Kit — Ext. (Not Shown)
—
—
751-10802
Gasket Kit — Comp. (Not Shown)
—
—
9