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11. CRANKSCASE/CRANKSHAFT/

BALANCE SHAFT

11-0

MX’er SYSTEM

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CRANKCASE/CRANKSHAFT/BALANCE SHAFT

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SERVICE INFORMATION -------------------------------------------- 11- 2

TROUBLESHOOTING ------------------------------------------------- 11- 2

CRANKCASE SEPARATION ----------------------------------------- 11- 3

CRANKSHAFT INSPECTION----------------------------------------- 11- 4

CRANKCASE/BALANCE SHAFT ASSEMBLY -------------------- 11- 5

Summary of content (7 pages)

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11. CRANKSCASE/CRANKSHAFT/ BALANCE SHAFT MX’er SYSTEM SERVICE INFORMATION GENERAL INSTRUCTIONS • This section covers crankcase separation to service the crankshaft. The engine must be removed for this operation. • The following parts must be removed before separating the crankcase. -Cylinder head (!Section 7) -Cylinder/piston (!Section 8) -Drive and driven pulleys (!Section 9) -A.C.
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11. CRANKCASE/CRANKSHAFT/ BALANCE SHAFT MX’er SYSTEM CRANKCASE SEPARATION Remove the left and right crankcase attaching bolts. (Section 10) Separate the left and right crankcase halves. ＊ Do not damage the crankcase gasket surface. Crankcase Bolts Remove the gasket and dowel pins. Gasket Balance Shaft Dowel Pins Remover balance shaft from the left crankcase.
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11. CRANKSCASE/CRANKSHAFT/ BALANCE SHAFT MX’er SYSTEM Remove the crankshaft and cam chain from the left crankcase. Clean off all gasket material from the crankcase mating surfaces. Gasket ＊ Avoid damaging the crankcase mating surfaces. CRANKSHAFT INSPECTION Measure the connecting rod small end I.D. Service Limit: 15.06 mm replace if over Measure the connecting rod big end side clearance. Service Limit: 0.
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11. CRANKCASE/CRANKSHAFT/ BALANCE SHAFT Turn the crankshaft bearings and check for excessive play. Measure the crankshaft bearing play. Service Limit: Axial : 0.20mm replace if over Radial : 0.05mm replace if over MX’er SYSTEM Play Play Radial Axial Measure the crankshaft run out. Service Limit: 0.10mm replace if over CRANKCASE/BALANCE SHAFT ASSEMBLY Crankshaft Install the cam chain into the left crankcase. Install the crankshaft and balance shaft into the left crankcase.
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11. CRANKSCASE/CRANKSHAFT/ BALANCE SHAFT Align the mark on the balance gear with the mark on the crankshaft gear. Install the right and left case cover. MX’er SYSTEM Mark Right Case Cover . Install the cylinder.