19
ENGLISH
TECHNICAL LIST THOR 202
Polini engine 2-stroke monocylinder
Cooling Liquid cooled
Bore for stroke 76 x 60
Displacement 205 cm3
Power 33 HP
Maximum trust* 90 Kg with Ø 130 cm propeller
R.P.M. max 8500
Cylinder aluminum with Gilnisil coating
Compression ratio 11,5
Piston Two chromium plated rings (mm 1) -
Intake Reed valve in the crankcase
Carburetor Dell’Orto VHST
Air filter Air box
Ignition 1 Inductive electronic T.C.I. with fix advance
Spark plug hood 5k resistance
*Fuel type Fuel E5 o LL 100 AV GAS-al 2,5% with 100% synthetic oil
**Fuel consumption 2,4 Lh at 30 Kg of static trust
Gear reduction unit Helical teeth in oil bath with 2,8 reduction ratio
Starter Flash starter
Clutch Centrifugal in oil bath
Muffler Expansion with oval silencer
Engine weight Starting form 16,8
Propeller rotation Clockwise
24- ENGINE PROBLEM DIAGNOSTIC CAUSE SOLUTION
The engine doesn't start Out of petrol Add petrol
Petrol doesn't reach the carburetor
Check the fuel system circuit
Old or wrong petrol Empty the tank and the fuel system circuit and replace the petrol.
Flooded engine
Remove the spark plug, start the engine, dry or replace the spark plug.
Defective spark plug Replace it
Blackened or wet spark plug Clean and dry the spark plug or replace it
Earth switching off cable Check the tightening
Spark plug hood wrong installed Check it
Carburetor has problems Clean and check it; eventually replace the diaphragm
No spark Check the ignition, coil and wiring
The engine doesn't idle Dirty carburetor Clean and check the carburetor
Out-of-adjustment screws Calibrate the carburetor again
Defective spark plug Replace it
The engine doesn't reach the maximum rpm Wrong carburetion Calibrate the carburetor
The carburetor has problems Clean and check it; eventually replace the diaphragm
The reed valve has problems Replace the reeds or the whole reed valve
Dirty air filter Clean or replace it
Dirty exhaust Clean or replace the deadening material
Engine revs up when idling Out-of-adjustment screws Calibrate the carburetor
Air through the gaskets Replace the gaskets and seals
*The values have been detected on the sea level at standard atmosphere. The trust and consumption values may vary according to the air
temperature and density.
**E5 means the petrol type that can be used. E5= unleaded petrol 95 octanes up to 5% of ethanol. This symbol is shown on all the petrol pumps
in Europe
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