Dolmar HT-2249 D Manual De Usuario

STORAGE

㪄㩷 When keeping the machine in storage for a long time, drain fuel from the fuel

tank and carburetor, as follows: Drain all fuel from the fuel tank.

㪄㩷 Remove the spark plug and add a few drops of oil into the spark plug hole.

Then, pull the starter gently to confirm that oil film covers the engine inside
and tighten the spark plug.

㪄㩷 Clear dirt or dust from the cutter blade and outside of engine, wipe them with

a oil-immersed cloth and keep the machine at a place as dry as possible.

MAINTENANCE SCHEDULE

General

Engine assembly,
screws and nuts

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

After each refuelling

Throttle lever
Safety lock key
I-O switch

Functional check
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
Inspection (cutting tool must not move)

Every 20 hours

Gear case

Supply of grease

Weekly

Spark plug
Muffler

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

Quarterly

Suction head
Fuel tank

To be replaced
To be cleaned

Shuting down
procedure

Fuel tank
Carburetor

Empty fuel tank
Operate until engine runs out of fuel

FAULT LOCATION

Fault System Observation

Cause

Ignition system

Ignition spark is present

Faulty fuel supply or compression system, mechanical defect

Engine not starting or
under difficulties

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

Incorrect choke position, carburetor defective, suction head (gas
line filter) dirty, fuel supply line bent or interrupted

Inside of engine

Cylinder bottom gasket defective, crankshaft seals damaged,
cylinder or piston rings defective

Compression

Outside of engine

Improper sealing of spark plug

Mechanical
fault

Starter not engaging

Broken starter spring, broken parts inside of the engine

Warm start problems

Tank filled
Ignition spark existing

Carburetor contaminated, have it cleaned

Incorrect idling adjustment, suction head or carburetor
contaminated

Engine starts but dies
immediately

Fuel supply

Tank filled

Fuel tank vent defective, fuel supply line interrupted, cable or
I-O switch faulty

Insufficient
performance

Several
systems may
simultaneously
be affected

Engine idling

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