ENGLISH
38
Crank shaft
axial play ..................................................0,03 - 0,12 mm
(0,001-0,005 in)
run out of crank stud..................................max. 0,04 mm
(0,002 in)
Connecting rod bearing
radial play ..................................................max. 0,05 mm
(0,002 in)
axial play....................................................max. 1,00 mm
(0,04 in)
Piston forged
assembly clearance ....................................max. 0,12 mm
(0,005 in)
Piston rings end gap
compression rings.......................................max. 0,60 mm
(0,023 in)
oil scraper ring............................................max. 0,80 mm
(0,031 in)
Valves
seat sealing intake ......................................max. 1,50 mm
0,059 in)
seat sealing exhaust ...................................max. 2,00 mm
(0,080 in)
run out of valve heads................................max. 0,03 mm
(0,001 in)
valve guides diameter.................................max. 7,05 mm
(0,277 in)
Oil pump
clearance outer rotor - housing ..................max. 0,20 mm
(0,008 in)
clearance outer rotor - inner rotor ..............max. 0,20 mm
(0,008 in)
Bypaß valve
minimum spring lenght ..........................................25 mm
(1 in)
Clutch discs
wear limit organic .................................................2,5 mm
(0,1 in)
Clutch springs
minimum lenght ...........................34,5 mm (new 37 mm)
(1,36 in - new 1,45 in)
Transmission shafts
axial play ......................................................0,1 - 0,4 mm
(0,004 - 0,016 in)
ASSEMBLY CLEARANCE, WEAR LIMIT - ENGINE 620 SC
–
+
0°C
32°F
15W 40
15W 50
10W 40
10W 50
API: SG, SH
TEMPERATURE
Engine oil
Use only synthetic oil brands, which meet quality requirements (Shell
Advance Ultra 4) of API-classes SG or SH (informations on bottles) or
higher.
!
CAUTION
!
P
OOR OIL QUALITY OR MINOR QUANTITY EFFECT EARLY ENGINE
-
WEAR
.
Hexagon nut at primary gear
M20x1,5
Loctite 243 + 170 Nm
(125 ft.lb)
Collar nut flywheel
M12x1 left
60 Nm
(44 ft.lb)
Hexagon nut for inner clutch hub
M18x1,5
Loctite 648 + 80 Nm
(59ft.lb)
Kickstarter stop screw
M12x1,5
50 Nm
(37ft.lb)
Allan head screw oil pumps
M6
Loctite 243 + 8 Nm
(6ft.lb)
Hexagon screw camshaft gear
M10
Loctite 243 + 35 Nm
(25ft.lb)
Allan head screw cylinder head top sect.
M6x25/m6x35/M6x65/M6x70 (8.8)
8 Nm
(6ft.lb)
Allan head screw cylinder head top sect.
M6x50/M6x55 (12.9)
20 Nm
(15ft.lb)
Cylinder head screws
M10
50 Nm
(37ft.lb)
Collar nuts at cylinder base
M10
40 Nm
(30ft.lb)
Hexagon screw chain sprocket
M10
Loctite 243 + 40 Nm
(30ft.lb)
Oil drain plug
M22x1,5
30 Nm
(22ft.lb)
Magnetic plug
M12x1,5
20 Nm
(15ft.lb)
Plug bypass valve
M12x1,5
20 Nm
(15ft.lb)
Hollow screws oil lines
M8x1
10 Nm
(7ft.lb)
Hollow screws oil lines
M10x1
15 Nm
(11ft.lb)
Jet screw clutch cover
M8
10 Nm
(7ft.lb)
Screw plug timing-chain tensioner
M12x1,5
20 Nm
(15ft.lb)
Counternuts valve adjusting screws
M7x0,75
20 Nm
(15ft.lb)
Crankshaft locking bolt
M8
25 Nm
(19ft.lb)
Spark plug
M12x1,25
20 Nm
(15ft.lb)
Engine mounting bolt
M8
40 Nm
(30ft.lb)
Engine mounting bolt
M10
70 Nm
(52ft.lb)
TIGHTENING TORQUES - ENGINE 620 SC
