R
epair
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
[4] DISASSEMBLY/ASSEMBLY
[4]-1. Warning
Follow the instructions described below in advance before repairing:
Wear gloves.
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 Impact driver.
Tighten the bolts and the screws to the specified torque as shown in "
[4]-16. 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.
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[1] NECESSARY REPAIRING TOOLS
[2] HANDLING OF GASKET
Code No.
Description
Use for
When Gasket is removed:
(1) clean up Gasket residues from mating surfaces with Gaskets removed.
(2) replace Gasket with new one.
Air density tester
Diagnosing Carburetor
1R127
Removing Piston pin
Round bar for arbor 12-50
1R286
Fixing Flywheel complete
Hook wrench
1R365
Removing Flywheel complete
Flywheel puller
1R364
Wire brush
Adjusting Ignition coil, Spark plug and Rocker arm assembly
Removing/mounting Flywheel
Hex socket bit 14
Cleaning Spark plug
Feeler gauge set
1R366
• Apply Makita grease N No.2 to Spiral spring in Recoil
starter.
• When disassembling the engine, apply ThreeBond 1216 t
o the mating surface
between Crankcase and Cylinder block. (
Fig. 75
)
[3] LUBRICANT/ADHESIVE APPLICATION
P
2
/2
6
