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Service Manual
2/93
DOLMAR GmbH
DOLMAR 109
DOLMAR 110i
DOLMAR 111
DOLMAR 111i
DOLMAR 115i
Postfach 70 04 20
D-2000 Hamburg 70
Germany

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Summarization of Contents

Chain brake
Releasing the chain brake
Procedure for releasing the chain brake using a screwdriver.
Relieving the tension spring
Steps to remove the brake band by relieving the tension spring.
Pretensioning the tension spring and brake gate
Procedure for pretensioning the tension spring and brake gate after installation.
Removing the hand guard
Instructions for removing the hand guard by unscrewing specific screws.
Fitting the hand guard
Guidance on fitting the hand guard, ensuring correct spring installation.
Clutch drum
Removing the clutch drum
Steps to remove the clutch drum, immobilizing the cylinder unit.
Unscrewing the clutch
Method for unscrewing the clutch using specific spanners.
Clutch designs
Details on differing clutch designs for various Dolmar models.
Checking the clutch drum/sprocket
Procedure for checking clutch drums and sprockets for wear.
Mounting the clutch drum
Instructions for mounting the clutch drum and clutch, including torque specification.
Oil pump
Adjusting oil pump delivery
How to adjust the oil pump delivery using a screw for chain oil.
Removing the oil pump
Steps to remove the oil pump housing from the crankcase.
Checking the oil pump for wear
Procedure for checking oil pump components like set screw and plunger.
Removing the intake pipe
Instructions for removing the intake pipe from the oil reservoir.
Cleaning the intake pipe
Guidance on cleaning the intake pipe, including oil filter replacement.
Withdrawing the worm
Method for withdrawing the worm from the crankshaft using a special tool.
Ignition system
Checking the spark plug
Procedure for checking spark plug function and condition.
Replacing the spark plug terminal
Steps for removing the spark plug terminal using pliers.
Installing the spark plug terminal
Instructions for installing the spark plug terminal onto the ignition cable.
Replacing the short-circuiting switch
Procedure for removing the short-circuiting switch from the engine.
Installing the short-circuiting switch
Steps for installing the short-circuiting switch in the crankcase.
Removing ignition armature and flywheel
Procedure for removing the ignition armature and flywheel assembly.
Installing ignition armature
Instructions for installing the ignition armature and setting the air gap.
Replacing the short-circuiting cable
Steps for removing and installing the short-circuiting cable.
Withdrawing the flywheel
Method for withdrawing the flywheel from the crankshaft using a punch.
Installing the flywheel
Instructions for installing the flywheel, ensuring a clean cone and proper torque.
Starter assembly
Removing the starter assembly
Procedure for removing the starter assembly, relieving the return spring.
Removing the return spring
Steps to remove the return spring and associated components.
Attachment of the starter rope
Details on how the starter rope is attached in the rope drum.
Pretensioning the return spring
Procedure for pretensioning the return spring after assembly.
Replacing the starter ratchets
Instructions for replacing starter ratchets as a complete assembly.
Carburettor
Adjusting the carburettor
Basic and idling adjustment procedures for the carburettor.
Removing the carburettor
Steps to remove the carburettor, including fuel pipe and linkage.
Adjusting the control lever
Guidance on aligning the control lever with the carburettor body.
Carburettor (Tillotson) control side
Procedure for accessing and checking the control side of a Tillotson carburettor.
Carburettor (Walbro) control side
Procedure for accessing and checking the control side of a Walbro carburettor.
Carburettor (Tillotson) pump side
Procedure for cleaning the pump side of a Tillotson carburettor.
Carburettor (Walbro) pump side
Procedure for cleaning the pump side of a Walbro carburettor.
Removing the injection valve
Steps to remove the injection valve assembly from the carburettor.
Removing the intermediate flange
Procedure for removing the intermediate flange after carburettor removal.
Cover system, air filter
Removing the air filter cover
Instructions for removing the air filter cover for cleaning.
Removing the cover
Steps to remove the cover assembly for cleaning the air filter.
Cleaning the air filter
Procedure for cleaning the auxiliary and main air filters.
Removing the bottom part
Steps for removing the bottom part of the engine housing.
Vibration damping system, handle
Removing and fitting the handle
Instructions for removing and fitting the chainsaw handle.
Replacing the vibration damper (KS)
Procedure for replacing vibration dampers using a special tool.
Replacing the vibration damper (MS)
Steps for replacing vibration dampers on the MS model.
Damping system design
Overview of the damping system design with three dampers on the tank housing.
Damper system design
Details on the fourth vibration damper's location and components.
Fuel tank
Removing and installing the fuel tank
Procedure for removing and installing the fuel tank.
Replacing the ventilation valve
Steps to replace the ventilation valve in the fuel tank.
Replacing the fuel pipe
Instructions for replacing the fuel pipe, ensuring proper sealing.
Replacing the intake head
Procedure for replacing the intake head and its felt component.
Removing throttle lever and locking system
Steps to remove the throttle lever and starting throttle locking system.
Cylinder and piston
Removing the cylinder
Procedure for removing the cylinder from the housing and piston.
Replacing the piston rings
Instructions for replacing piston rings and handling the piston.
Different cylinder design
Comparison of die cast and Henkel cylinder designs and piston rings.
Cylinder and piston marking
Explanation of identification markings on Henkel cylinders and pistons.
Installing the cylinder
Procedure for installing the cylinder using a fork and tension band.
Crankcase, crankshaft
Replacing the radial sealing rings
Procedure for replacing radial sealing rings using a special tool.
Dismantling the crankcase
Steps to dismantle the crankcase and oil reservoir.
Removing the crankcase
Instructions for separating the crankcase after removing screws.
Crankcase is divided
Details on how the crankcase is divided into magnet and clutch sides.
Assembling the crankcase halves
Procedure for assembling the crankcase halves, including crankshaft and seal.
Checking operations
Checking the ignition system
Procedure for checking the ignition system and spark plug using a tester.
Checking the carburettor
Method for checking the carburettor in-situ using a pressure tester.
Checking carburettor and crankcase
Pressure-testing the carburettor or crankcase at a maximum of 0.5 bar.
Using a torque wrench
Importance of using a torque wrench for tightening screwed connections.
Checking the crankcase with cylinder
Procedure for pressure-testing the crankcase with cylinder attached.

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