Engine Top End Tightening Torque Specifications; Engine Top End Specifications - Polaris 1999 Sportsman 400 Service Manual

ENGINE TOP EN»
Table 3 ENG INE TOP END TIGHTENI NG TORQUE SPECIFICATIONS
135
Item
N'm
in.lb.
ft.-lb.
Cylinder h ead bolts
La rge b olt s*
Sma ll 6 mm b olts 8
71
-
Cylind er blo ck bolts
10
mm
bolts 63
-
46
6
mm
bolts 8
71
-
Crankcase bolts 19-21
-
14-15
Camshaft cha in
Driv e sprocket slotted nut
48-7 0
-
35-52
Driven sprocke t bo lt
7-8 62-71
-
Rear tens ioner
Moun ti ng bol ts
7-8
62-71
-
Cen ter bolt 17
-
12
011 delivery pi pe 25-34
-
16-25
0 11 pressu re bli nd plu g 9-15 80-133
-
Roc ker arm support bolt s 11-12 97-106
-
Roc ker arm adj uste r loc knut
6-7 53-71
-
Spark plug 19
-
14
*
See text in thi s ch apt er for torque procedure.
Table 4 ENGINE TOP END SPECIFICATIONS
Item
Rocker arm out side dia meter
Rocker arm sh aft outer d iamete r
Rocker arm- to- shaft clea rance
Camshaft
Lobe height
Intake and exhaust
Journal ou t side diameter
Both sides
Journal bore ou tside diameter
Both sides
Journal-ta-bore clea rance
Cy lin der head
Top surface wa rp
Valves
Contact seat w idth
Intake
Exha ust
Margin thickness
Intake
Exha ust
Valve clearanc e (c ol d)
Intake and exhaust
New
mm (in.)
22. 020-22.041
(0.8 669-0.8678)
21.987-22.000
(0.8656-0.866 1)
0.020-0.054
(0.0008-0.0021 )
32.726-32.826
(1.2884-1.2924)
37.935-37.950 0
(1.4935-1.49 41)
38.005-38.025
(1.4963-1.4970)
0.055-0.090
(0.0022-0.0035)
0.7 (0.02 8)
1.0 (0.039)
1.0 (0.039)
1.2 (0.04 7)
0.15 (0.006)
(continued)
Service limit
mm (in.)
0 .10
(0.0039)
32.426
(1.2766)
0.10
(0.0039)
0.050 (0.0020)
1.4 (0.055)
1.9 (0.0 75)
0.8 (0.031)
0.8 (0.031)