Dolmar PS-7900 Repair Manual Information
Dolmar PS-7900 Repair Manual for the Dolmar Chainsaw. Repair and service the PS 7900 with this manual, which contains clear repair pictures. The manual contains diagrams and accurate information as used by professional mechanics and repair shops to troubleshoot and repair the Chainsaw. View free page images online or download full PDF that you can print or view on any suitable device using a PDF reader. The manuals have plenty of pictures and diagrams to make the entire repair process easy for you. Can be used as guides for other models as they may share key components such as motors.
Dolmar PS-7900 Repair Manual Contents
Technical data, Troubleshooting, Special tools, Sprocket guard / Chain tensioning system, Clutch drum / Rim sprocket, Chain brake, Clutch, Oil pump, Starter, Ignition system, Carburetor, Vibration damper / Tubular handle, Tank, Cylinder / Piston, Outside components / Crankcase / Crankshaft, Handle Heating, Torques, Check operation.
Troubleshoot The PS-7900 Chainsaw
The chain does not run
Engine runs Chain brake actuated.
The engine does not start or with difficulty
Malfunction in the fuel supply system, compression system, mechanical malfunction.
Switch on STOP, fault or short-circuit in the wiring, plug cap or spark plug defective.
Choke in the wrong position, carburetor defective, fuel filter dirty, fuel line bent or interrupted, torn, Perforated.
Cylinder base packing ring defective, radial shaft packings defective, cylinder or piston rings defective.
Spark plug does not seal.
Spring in starter broken, broken parts inside the engine.
The warm engine doesn‘t start
Wrong carburetor adjustment, flooded by the usage of the choke.
The engine starts but dies immediately.
Wrong idling adjustment, fuel filter or carburetor dirty. Tank venting defective, fuel line interrupted, cable defective, STOP switch defective. Decompression valve dirty.
Air filter dirty, wrong carburetor adjustment, muffler clogged, exhaust channel in cylinder clogged, spark arrester screen clogged, worn piston.
No chain lubrication
Oil tank empty, oil guide groove dirty.
Removing the carburetor
Disengage the choke lever (pull out and turn clockwise). Use needle-nose pliers to remove oil-pump adjusting screw incorrectly adjusted, oil pump drive defective.
Dolmar PS-7900 Repair Manual PDF
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