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This is an exploded view of the YS 115S Engine. 

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Part #

 Description Qty Price Purchase
01 YSE6405 Crankcase 1 69.95
  YSE6410 Cylinder head assembly   149.95
02 YSE6415 Cylinder head 1 $119.95
03 YSE1590 Intake valve 1 $15.75
04 YSE1600 Exhaust valve 1 $14.25
05 YSE0540 Valve spring set 2  $6.25
06 YSE2030 Spring retainer set 2

$5.75

07 YSE2040 Valve spring retainer clips 4  $5.75
08 YSE5415 Cylinder gasket 1  $4.95
09 YSE5420 Head screws 4    $4.95
10 YSE1640 Valve cover 1  $11.50
11 YSE1650 Valve cover gasket 1 $
12 YSE1660 Valve cover screws 2  $2.95
13 YSE1670 Rear air chamber 1  $12.95 
14 YSE1680 Air chamber gasket 1 $
15 YSE1690 Air chamber screws 4 $4.25
16 YSE1700 Air chamber O ring 1 $
17 YSE6420 Crankshaft 1   79.50
18 YSE5430 Crankshaft ring      $22.95
19 YSE6425 Rear bearing 1   26.95
20 YSE1050 Front bearing 1  $13.95
21 YSE1730 Front bearing oil seal 1  $8.75
22 YSE4325 Drive washer 1 $18.75
23 YSE4330 Drive washer retainer 1 $5.95
24 YSE0425 Propeller washer 1 $2.50
25 YSE0830 Propeller nut set 2  $7.25
26 YSE6430 Piston 1   $54.95
27 YSE0615 Piston ring 1 $18.50
28 YSE6035 Wrist pin 1 $
29 YSE1790 Rocker arm set 2 $27.50
30 YSE0560 Tappet adjusting screw set 2 $6.25
31 YSE0565 Tappet adjusting lock nuts 2 $3.10
32 YSE1800 Rocker arm shaft 1   $7.25
33 YSE1810 Rocker arm screw 1 $1.50
34 YSE0580 E ring set 2  $2.50
35 YSE0670

Cam gear

1 $46.25
36 YSE1820 Cam gear cover 1  $5.75
37 YSE1830 Cam gear cover O-ring 1    $
38 YSE1840 Cam gear cover screws 2  $2.95
39 YSE0705 Cam gear bearing set 2 $12.95
40 YSE0675 Cam followers set 2  $12.25
41 YSE1850 Push rods 2   $5.50
42 YSE1860 Push rod covers 2  $7.25 
43 YSE0690 Push rod cover O rings 4   $
44 YSE6435 Connecting rod 1 $26.95
  YSE6440 Back Plate assembly   $74.95
45 YSE6445 Back plate 1 $
46 YSE6450 Disk valve 1  $ 
47 YSE6455 Disk valve pin 1 $
48 YSE6460 Disc valve set screw 1   $3.95
49 YSE1930 Back plate gasket 1  $
50 YSE6465 Carburetor body 1   $56.95
51 YSE6470 Throttle barrel 1 $32.95
52 YSE2050 Low speed needle valve 1   $8.50
53 YSE2060 Low speed needle valve  O- ring 1 $
54 YSE4315 Throttle barrel seal 1 $4.95
55 YSE1090 Throttle barrel retainer 1 $3.10 
56 YSE0200 Throttle arm set 1   $5.50
57 YSE0785 Throttle stop screw 1 $1.50
58 YSE0790 Throttle stop spring 1  $1.50
  YSE6475 Needle valve Set 1 $34.95
59 YSE2690 Needle valve 1   $12.95
60 YSE2695 Needle valve O-ring 1   $3.50
61 YSE6480 Needle socket 1    $16.95
62 YSE6330 Needle socket O-ring 3   $4.95
63 YSE2710

Needle valve detent

 1 $4.95  
64 YSE1970 Carburetor gasket 1  $
65 YSE5485 Carburetor screws 6  $8.95 
  YSE6335 Regulator assembly 6  $59.95
66 YSE5330 Regulator body A 1  $34.95
67 YSE5340 Diaphram 1 $3.50 
68 YSE5343 Regulator valve 1 $3.95
69 YSE5345 Regulator valve O ring 1  $3.50 
70 YSE6340 Regulator body B 1  $34.95
71 YSE6345 Regulator  screws 2   $3.95
72 YS6485 Regulator spacer 1 $3.95
  YSE4335 Muffler set   $44.95
73 YSE4340 Muffler assembly 1  $36.25
74 YSE4345 Exhaust pipe 1   $16.95
75 YSE4350 Rock nuts 2   $8.25
  YSE0405 Check valve 1   $7.75
  YSE6490 Gasket set 4  $15.95
  YSE6495 O ring set 12   $24.95
 

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Copyright 2008 Prices Subject to Change Without Notice
06/28/11

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