Lubricating The Gear Box; Suction Head In The Fuel Tank; Cleaning The Muffler Opening; Service And Maintenance - Dolmar MS-260 U, MS-330 U, MS-430 U, MS-230 C, MS-260 C, MS-330 C Instruction Manual

Lubricating the gear box

D
After about 50 operating hours the gear box (D/8) should be
checked by a OLMAR service centre, and if necessary re-
grease.
The service centre will add the exact amount of grease, as
excessive grease will lead to overheating of the gearbox.
Servicing and maintenance
After about 50 tankfuls, have the brushcutter thoroughly inspected
at a DOLMAR service centre.
no maintenance and adjustment work not described in this
manual may be performed by the user. al such work must
be performed only by a DoLMar service centre.

Trouble shooting

fault
Engine will not start or
starts only with difficulty
Warm start problems
Engine starts but
dies immediately
Insufficient power
18
Service
System observation
Ignition system Ignition spark OK
No ignition spark
Fuel supply Fuel tank full
Compression Inside of engine
system
Outside of engine
Mechanical fault Starter not engaging
Carburetor Tank filled
Ignition spark OK
Fuel supply Tank full
Several systems Engine idling
may be affected
simultaneously

Suction head in the fuel tank

E
The felt filter (E/9) of the suction head is used to filter the fuel
taken in by the carburetor.
A periodical visual inspection of the felt filter should be con-
ducted. For this purpose open the tank cap, and use a wire
hook to pull out the suction head through the tank opening. If
the filter has hardened or is dirty or clogged, replace it.
Insufficient fuel supply can result in the admissible maximum
speed being exceeded. It is therefore important to replace the
felt filter at least every three months to ensure a good fuel sup-
ply to the carburetor.

Cleaning the muffler opening

Regularly inspect the muffler opening (E/8). When it becomes
clogged with carbon residues, carefully scrape them out with
the suitable tool.
Cause
Fault in fuel supply or compression system,
mechanical defect
STOP switch is depressed, wiring fault or short
circuit, spark plug or connector defective,
ignition module faulty
Incorrect choke position, carburetor defective,
suction head dirty, fuel supply line bent or
interrupted
Cylinder bottom gasket defective, crankshaft
seals damaged, cylinder or piston rings worn
Poor sealing of spark plug
Broken starter spring, broken parts inside engine
Incorrect carburetor setting
Incorrect idle speed, suction head or
carburetor dirty
Fuel tank vent defective, fuel supply line
interrupted, cable or STOP switch faulty
Air filter dirty, carburetor adjustment
incorrect, muffler clogged, exhaust duct in
the cylinder clogged