Honda SH300I 2006, Manual

Page: 299 / 511

CRANKCASE/CRANKSHAFT
14-3
SERVICE INFORMATION
GENERAL
• This section covers the crankcase separation to service the crankshaft.
• The following parts must be removed before separating the crankcase.
– engine (page 8-4)
– cylinder head (page 9-11)
– cylinder and piston (page 10-4)
– centerstand (page 3-16)
– starter motor (page 21-6)
– flywheel (page 13-9)
– oil pump (page 5-8)
– oil filter (page 4-12)
– oil pressure switch (page 5-5)
– drive pulley (page 11-8)
– clutch/driven pulley (page 11-11)
• In addition to the parts listed above, remove the final reduction (page 12-6) when the left crankcase half must be
replaced.
• Be careful not to damage the crankcase mating surfaces when separating and assembling the crankcase halves.
• Clean all disassembled parts with clean solvent and dry them using compressed air before inspection.
• Prior to assembling the crankcase halves, apply sealant to their mating surfaces, Wipe off excess sealant thoroughly.
SPECIFICATIONS
Unit: mm (in)
TORQUE VALUES
ITEM STANDARD SERVICE LIMIT
Crankshaft Connecting rod big end side
clearance 0.15 – 0.30 (0.006 – 0.0012) 0.40 (0.016)
Crankpin bearing oil clearance 0.030 – 0.052 (0.0012 – 0.0020) 0.07 (0.003)
Main journal oil clearance 0.020 – 0.038 (0.0008 – 0.0015) 0.07 (0.003)
Crankshaft runout – 0.10 (0.004)
Main journal O.D. 39.982 – 40.000 (1.5741 – 1.5748) 39.976 (1.5739)
Main journal I.D. 45.000 – 45.012 (1.7717 – 1.7721) 45.060 (1.7740)
Crank pin bearing cap nut 33 N·m (3.4 kgf·m, 24 lbf·ft) Apply engine oil to the threads and flange surface
Cam chain tensioner pivot bolt 12 N·m (1.2 kgf·m, 9 lbf·ft)