Makita EM4350LH, EM4350UH, EM4351UH specifications Necessary Repairing Tools

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Repair

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

[1] NECESSARY REPAIRING TOOLS

	Code No.	Description	Use for
	1R004	Retaining ring pliers ST-2 for External ring	removing/ installing Retaining rings
	1R005	Retaining ring pliers RT-2N for Internal ring	removing/ installing Cotter by using 1R389
	1R006	Retaining ring pliers RT-2E for Internal ring	removing/ installing Retaining rings
	1R028	Bearing setting pipe 20-12.2	press-fitting Cutter shaft set into Ball bearing 6000DDU
	1R031	Bearing setting pipe 28-20.2	removing Spiral bevel gear 14 from Ball bearing 609ZZ
			press-fitting Clutch drum into Ball bearing 6004LLU/6003LLU
	1R033	Bearing setting plate 10.2	removing Ball bearing 6000DDU from Cutter shaft complete
	1R045	Gear extractor (Large)	removing Ball bearings
	1R127	Air density tester	diagnosing Carburetor
	1R247	Round bar for arbor 20-100	removing Clutch drum complete from Clutch case
			removing Spiral bevel gear 14 from Ball bearing 6000ZZ and
	1R282	Round bar for arbor 8-50	6000
			removing Piston pin
	1R286	Round bar for arbor 12-50	press-fitting Clutch drum complete into Clutch case
	1R291	Retaining ring S and R pliers	removing/ installing Retaining rings
	1R364	Flywheel puller	removing Flywheel
	1R366	Feeler gauge set	adjusting Ignition coil, Spark plug
	1R389	Cotter removal attachment	removing/ installing Cotter by using 1R005
---		10mm Hex socket bit	removing/ installing Flywheel
---		14mm Hex socket bit	removing/ installing Clutch
---		Wire brush	cleaning Spark plug
	1R219	Torque wrench shaft 7-23N.m	tightening Bolts to specified torque
	1R254	Torque wrench shaft 2-6N.m

[2] HANDLING OF GASKET

Once Gasket is removed:

(1)Clean up the mating surface where the gasket was installed to maintain its sealing performance.

(2)Replace it with a new one.

[3] LUBRICANT / ADHESIVE APPLICATION

(1)Apply a little amount of Makita grease N No. 2 to Spiral spring in Recoil starter and the spline ends of Shaft in Shaft pipe complete.

(2)When the inside of Gear case is cleaned, supply 11g of Makita grease N No. 2 from the grease inlet.

(3)Apply 4g of Makita grease N No. 1 to the entire portion of Shaft in Shaft pipe complete.

(4)Once Engine is disassembled, remove oil/grease from the mating surface of Cylinder and Crankcase complete, then apply ThreeBond 1215/1216 to the mating surface for the reassembly.

[4]DISASSEMBLY/ASSEMBLY

[4]-1. Warning

Follow the instructions described below in advance before repairing:

•Wear gloves.

•Remove the cutting tool from the unit, and if it is a saw blade, attach the blade cover to the blade.

•When the engine is hot from use, cool down the engine enough or you can get burned.

•Remove remaining fuel from Fuel tank and Carburetor completely. [FLAMMABLE MATERIAL KEEP FIRE AWAY]

•Remove Spark plug cap from Spark plug.

•Repair the engine on a stable workbench and in a clean workplace kept as free of dust and debris as possible.

•In order to avoid wrong reassembly, draw or write down where and how the parts are assembled, and what are the parts. It is also recommended to have boxes ready to keep disassembled parts by group.

•Handle the disassembled parts carefully. Clean and wash them properly.

•If some bolts and screws are too tight, use an impact driver.

•Tighten the bolts and the screws to the specified torque as shown in "[4]-15. Tightening torque specifications".

•Each time after you mounted a main part of the engine such as the piston, check if it moves smoothly without abnormal noise by manually turning the crankshaft.

•After completion of reassembly, check for loose parts or abnormal noise and vibration by manually turning the crankshaft.