Dolmar MS-231 C Manuel D’Utilisation

14

General 

Engine assembly, screws and nuts

Visual inspection for damage and tightness.
Check for general condition and security.

After each refueling

Control lever
I-O switch

Functional check
Functional check

Daily

Air filter
Cooling air duct
Cutting tool
Idling speed

To be cleaned
To be cleaned
Check for damage and sharpness
Inspect (Cutting tool does not rotate)

Weekly

Spark plug
Muffler

Inspection, replace if necessary
Check and clean the opening if necessary

Quarterly

Suction head
Fuel tank

To be replace
To be cleaned

Yearly
(Long Term)

Fuel tank
Carburetor

Empty fuel tank
Operate until engine stops

Trouble

System

Observation

Cause

Engine does not start or 
hard to start

Ignition system

Ignition spark O.K.

Failure in fuel supply or compression system, mechanical defect

No ignition spark

I-O switch operated, wiring fault or short circuit, spark plug or 
connector defective, ignition module faulty

Fuel supply 

Fuel tank filled

Wrong choke position, defective carburetor, fuel supply line bent 
or blocked, dirty fuel     

Compression

No compression when pulled over   Cylinder bottom gasket defective, Crankshaft seals damaged, 

Cylinder or piston rings defective or improper sealing of spark 
plug

Mechanical fault

Starter not engaging

Broken starter spring, broken parts inside the engine

Warm start problem

Tank filled
Ignition spark

Carburetor contaminated or damaged.  Clean or replace.

Engine starts but soon 
stops

Fuel supply 

Tank filled

Incorrect idle-adjustment,
Carburetor contaminated
Defective tank, fuel supply line interrupted, cable or I-O switch 
defective.

Insufficient performance

Several systems 

Poor engine idling

Air filter contaminated, carburetor contaminated, muffler 
clogged, exhaust duct in the cylinder clogged