Table of Contents
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Table of Contents
Related Manuals for Makita DOLMAR PS-421
Summarization of Contents
Special Tools (Page 5)
Torx screwdriver
Tools for tightening and loosening Torx screws.
Mandrel
Tool for tapping out the flywheel without damaging the crankshaft thread.
Setting gauge
Gauge for measuring the gap between flywheel and armature.
Torque wrench
Tool for applying precise torque to fasteners.
Piston stop wedge
Wedge for blocking the engine through the exhaust port.
Special Tools (Page 6)
Piston ring tensioner
Tool for installing piston rings onto cylinders.
Assembly and disassembly wrench
Wrench for assembling/disassembling centrifugal clutch.
Pressure gauge
Gauge for checking carburetor fuel valve.
Tachometer
Electronic tachometer for measuring engine speed.
3/8" socket
Socket for spark plug and clutch installation/removal.
Needle-nose pliers
Pliers for various assembly/disassembly tasks.
Disassembly hook
Tool for brake band spring removal/installation.
Over/underpressure pump
Pump for checking sealing of radial rings and gaskets.
Special Tools (Page 7)
Sealing plate (intake)
Plate for sealing intake side.
Sealing plate (exhaust)
Plate for sealing exhaust side.
Sprocket Guard / Chain Tensioning System
Chain tensioner function
Explains how the angled worm drive adjusts the tensioning pin.
Ignition System
Removing the flywheel
Procedure for removing the flywheel.
Removing the ignition armature
Steps to remove the ignition armature.
Installing the ignition armature
Procedure for installing the ignition armature correctly.
Carburetor
Removing the intake manifold and carburetor
Procedure for removing intake manifold and carburetor.
Removing the carburetor bottom
Steps to remove the bottom part of the carburetor.
Basic Setting (without Limiter Caps)
Basic adjustment settings for the carburetor.
Pressure test
Testing carburetor pressure.
General check
General checks for carburetor contamination.
Check control parts
Checking carburetor control lever and inlet needle.
Check the pump diaphragm
Procedure for checking the pump diaphragm.
Check control diaphragm
Procedure for checking the control diaphragm.
Vibration Damper
Springs 1 and 2
Procedure for removing cushion springs 1 and 2.
Spring 3
Procedure for removing cushion spring 3.
Spring 4
Procedure for removing cushion spring 4.
Tank
Grip mechanism
Procedure for disassembling the grip mechanism.
Removal
Steps for removing the fuel tank.
Pressure test
Testing fuel tank pressure for leaks.
Vacuum testing ventilation valve
Testing the ventilation valve's vacuum holding capability.
Parts
Details on removing fuel lines and nipple.
Cylinder / Piston
Vacuum testing
Testing engine sealing with vacuum.
Removing the cylinder and piston
Procedure for removing cylinder and piston assembly.
Assembling the cylinder and piston
Procedure for assembling cylinder and piston with new gasket.
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