GX340 ・ GX390K1/R1/T1/U1/UT1 Engine Assembly Information PISTON BALANCER CRANKCASE COVER/GOVERNOR MARKING PISTON RINGS BALANCER WASHER LOCK PIN DOWEL PIN (2) REASSEMBLY: DRIVE GEAR REASSEMBLY: REASSEMBLY: Refer to GX120·GX160·GX200 (large gear on the Install inside the case. · Install the lock pin immediately Engine Assembly Information. BALANCER crankshaft) TOP RING (CHROME FACED) after installing the governor arm GOVERNOR ARM SHAFT shaft, and move the shaft to the SECOND RING (BLACK FACED) TOP RING REASSEMBLY: cylinder side as shown. (CHROME FACED) After installing, rotate the shaft SPACER · The lock pin must be installed OIL RING SECOND RING to the cylinder barrel side. with the straight side of the pin SIDE RAIL (2) (BLACK FACED) PISTON PIN CLIP (2) against the groove in the shaft. CLIP REASSEMBLY: OIL RING REASSEMBLY: Refer to GX120·GX160· PISTON (COMBINATION RINGS) GOVERNOR SLIDER Install firmly into the shaft groove. GX200 Engine Assembly PUNCH MARKS REASSEMBLY: Information. Spread the governor weights to install the slider; then check to be BALL BEARING CONNECTING ROD PISTON PIN TIMING GEAR sure the slider moves smoothly. CLIP PISTON PIN REASSEMBLY: (smaller gear on GREASE Install the connecting rod with the long the crankshaft) GOVERNOR WEIGHT (3) end toward the triangle-marked side of CUT OUT REASSEMBLY: the piston. Check that the weights move freely. GOVERNOR PIN (3) WASHER CRANKSHAFT/BALANCER/PISTONCRANKSHAFT/BALANCER/PISTON GOVERNOR WEIGHT HOLDER OIL SEAL REASSEMBLY: CRANKCASE GASKET 35 x 52 x PISTON CAMSHAFT Before installing, check for wear and Do not reuse. 8 mm REASSEMBLY: REASSEMBLY: Before installing, inspect for PUNCH MARKS CRANKCASE 8 x 35 (7) Install with the CRANKCASE COVER, CRANKSHAFT,worn and weakened PISTON springs and check that the damage of the gear. CAMSHAFT COVER 24 N·m (2.4 kgf·m, 17 lbf·ft) triangle mark decompressor weight moves smoothly. toward the pushrod hole. DECOMPRESSOR WEIGHT FLYWHEEL/IGNITION COIL TRIANGLE MARK Refer to GX240・GX270R/RT/T/U/UT Engine Assembly Information. VALVE LIFTER (2) CYLINDER HEAD/VALVES DISASSEMBLY: When removing, VALVE SPRING RETAINER (2) EXHAUST VALVE CYLINDER HEAD mark so that the IN and EX sides DISASSEMBLY, REASSEMBLY: REASSEMBLY: Do not interchange with the intake valve. REMOVAL/INSTALLATION: BALL BEARING can be distinguished. Refer to GX120·GX160·GX200 VALVE HEAD DIAMETER IN: 35 mm EX: 31 mm Refer to GX120·GX160·GX200 OIL SEAL REASSEMBLY: Install the lifters Engine Assembly Information. Engine Assembly Information. 35 x 52 x 8 mm immediately before installing the GREAS camshaft. VALVE SPRING (2) VALVE ROTATOR DOWEL PIN GREAS VALVE SPRING SEAT (2) (Exhaust valve only) CLIP REASSEMBLY: INTAKE VALVE (EX side only) 10 mm FLANGE NUT Refer to GX120· HEAD COVER 10 N·m (1.0 kgf·m, 7 lbf·ft) GX160·GX200 VALVE GROMMET Engine Assembly GUIDE (2) Information. OIL DRAIN BOLT (2) 23 N·m (2.3 kgf·m, 17 lbf·ft) ROCKER ARM CYLINDER Replace.DRAIN BOLT WASHER PIVOT (2) CYLINDER HEAD ROCKER ARM INTAKE VALVESTEM SEAL GASKET OIL LEVEL SWITCH PIVOT LOCK PUSH ROD (2) NUT (2) Do not reuse. CONNECTING ROD BOLT (2) PUSH ROD GUIDE TIMING GEAR/ 10 N·m (1.0 kgf·m, HEAD COVER 14 N·m (1.4 kgf-m, 10 lbf·ft) ROCKER ARM PIVOT BOLT (2) CYLINDER HEAD COVER PACKING BALANCER GEAR 7 lbf·ft) WASHER ROCKER ARM (2) 24 N·m (2.4 kgf·m, 17 lbf·ft) REASSEMBLY: Install the gasket as shown, BALANCER HEAD COVER BOLT noting the installation direction. CONNECTING ROD CAP CRANKSHAFT REASSEMBLY: 10 x 80 (4) 35 N·m (3.5 kgf·m, 25 lbf·ft) REASSEMBLY: REASSEMBLY: Refer to GX120·GX160·GX200 CYLINDER HEAD PACKING Install with the oil dipper toward the camshaft and so Push in until the bearing touches the crankcase. Engine Assembly Information. REMOVAL/INSTALLATION: Loosen and tighten COVER the ribs on the cap and connecting rod are aligned. Be careful not to damage the oil seal. the bolts in a crisscross pattern in 2-3 steps. See the shop manual for additional information. © Honda Motor Co., Ltd. 2009.