Service manual

2. Overhauling
2-2
2.1.2 Disassembly and assembly
(1) Wash dirt, dust and grime off vinyl tube and fuel hose before removing it, and take necessary
steps to cover or tape the openings of vinyl tubes or fuel hoses to prevent any dirt from entering
them.
(2) Perform disassembly work in a dust-free location whenever possible.
(3) When disassembling parts, wash their outer surface and place them on a clean sheet of paper or
cloth, taking care not to contaminate or damage them.
(4) Wash disassembled parts with diesel oil (cleaning solvent) after checking for contamination or
discoloration. However, do not wash rubber parts with diesel oil.
(5) Be careful not to damage disassembled parts, they are precision built.
(6) Replace consumables such as oil seals, O-rings, filters, oil, etc. with new items when
reassembling parts.
(7) Apply a coating of clean grease to O-rings when installing them in the machine.
(8) When reassembling parts, place each part in the order of assembly and take care that no parts
are missing or misassembled.
(9) When reassembling an assembled part (set part), be sure to replace it as an assembly.
(10) Contamination or rusting may occur due to dust or humidity if parts are left in disassembled or
partly disassembled condition for a long time. Therefore, be careful to prevent dust or rust from
affecting parts if you have to leave the repair incomplete for a long period of time.
(11) Check tightening torque and clearance when assembling parts.
(12) Check the direction of rotation, speed, and oil leakage after assembly.
(13) Before starting the machine after disassembly, run it at low idle to check for unusual noises, etc.
to prevent engine or generator damage.