Engine Maintenance And Service - Joyner JNSZ1600QL Owner's Manual

ENGINE MAINTENANCE AND SERVICE

Introduction.............................................................................................................30
Engine configuration view and sectional view........................... ........................................31
Main engine technical indexes and operation parameters.....................................................32
Engine structural features.............................................................................................35
Engine maintenance.......................................................................................................36
Engine removal and assembly procedure..........................................................................39
[1] Positioning no.1 cylinder top dead center (compression) ................................................39
[2] Upper and lower timing gear cover assemblies removal and installation.............................40
[3] Crankshaft pulley removal and installation.................................................................41
[4] Valve cover and seal gasket removal and installation.....................................................42
[5] Timing belt removal, installation and adjustment..........................................................43
[6] Tension pulley, crankshaft gear and camshaft gear removal, check and installation...............45
[7] Camshaft oil seal removal and installation...................................................................47
[8] Valve mechanism and cylinder head removal, check and installation.................................48
[9] Piston and connecting rod assembly removal and installation..........................................57
[10] Flywheel assembly and rear oil seal bracket assembly removal and installation ..................61
[11] Crankshaft, crankshaft thrust washer, bearing bushing and main bearing cap removal and
installation .......................................................................................................63
[12] Oil baffle assembly removal and installation..............................................................67
[13] Engine oiling system.............................................................................................68
[14] Engine cooling system..........................................................................................75
[15] Engine air intake and exhaust system......................................................................80
[16] Engine crankcase ventilation system........................................................................84
[17] Engine fuel supply system.....................................................................................86
Carburetor engine malfunction, cause and correction........................................................93
CAC480MEngine single-point electric control injection system............................................101
[1] Summarize.........................................................................................................101
[2] Operation principle ..............................................................................................102
[3] Wiring diagram....................................................................................................121
[4] System service......................................................................................................123
[5] Malfunction, cause and correction.............................................................................127
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