Makita EM4350LH, EM4350UH, EM4351UH specifications Valve section

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Repair

[4]DISASSEMBLY/ASSEMBLY [4]-13. Engine block (cont.)

ASSEMBLING

Assemble by reversing the disassembly procedure.

[4]-14. Valve section

DISASSEMBLING

(1)Remove two Rocker arm assemblies and Pin 5 from Cylinder block assembly. (Fig. 89)

(2)Push a rag into Cylinder block assembly from the bottom side so as not to fall off Intake valve and Exhaust valve. The rag works as protection of the inside of Cylinder block assembly.

(3)Remove Cotters, Retainers and Compression springs 11 from Intake valve and Exhaust valve with 1R389 and 1R005. (Figs. 90 and 91)

Fig. 89

Fig. 91

Rocker arm assembly (2 pcs.)

Pin 5

Fig. 90

1R389

1R005

Cotter

(4 pcs.)

Cotter (4 pcs.)

Retainer (2 pcs.)

Compression spring 11 (2 pcs.)

Exhaust	Intake
valve	valve

Image 20

Contents Specification Optional accessoriesStandard equipment EM4350UH EM4350LH EM4351UHNecessary Repairing Tools RepairAssembly Engine and ShaftDisassembling Shaft pipe completeAssembling Repair DISASSEMBLY/ASSEMBLY 4-3. Shaft pipe complete DISASSEMBLY/ASSEMBLY Gear case assembly Clutch shoe Clutch drum For 4351UH For 4350LH and 4350UHChecking Spark Plug Ignition systemChecking Plug CAP Mounting Ignition Coil FlywheelRemoving Ignition Coil Repair DISASSEMBLY/ASSEMBLY 4-9. Recoil starter Reel. FigsDISASSEMBLING/ Cleaning Carburetor Carburetor sectionRepair DISASSEMBLY/ASSEMBLY 4-10. Carburetor section Assembling CarburetorVacuum Leak Test of Carburetor Mounting CarburetorStop switch section Checking Stop SwitchFuel tube section Fuel Tube RoutingEngine block Ring gap Side rail Top ring Second ring Spacer Ring gapRepair DISASSEMBLY/ASSEMBLY 4-13. Engine block Valve section DISASSEMBLY/ASSEMBLY Tightening torque specifications EM4350UH