Vortex ROK DVS JUNIOR, Owner'S Manual

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17
Your Vortex engine is now ready to be installed
on the chassis.
3. STARTING AND BRAKE-IN
Only a proper break-in will insure the best performance out of your engine in the future and
guarantee its long and trouble-free life
.
Break-in is required when an engine is new or has undergone a major service of the engine's main
parts (piston, cylinder, connecting rod, etc.).
1
Prepare fuel. Vortex engine works with commercial gasoline, leaded or unleaded
,
as well as
racing fuel, with minimum 95 ROM.
Mix oil and gasoline at 5% (i.e. 50cc of oil every 1.000 cc. of fuel) 20:1
2
Use a high-quality synthetic oil specifically made for kart engines. Check any requirements of
your ASN regarding the use of specific brand/type.
3
Shake the can thoroughly to mix the fuel and the oil properly. Then fill the gas tank in your kart.
A mistake in measurements could result in engine damage.
4
Before making the first start you must fill the carburettor with fuel.
To do this you need to remove the spark plug and spin the rear tires for a few seconds.
Once the fuel line will be completely full, you can reinstall the spark plug and proceed to first
start.
5
To start the engine on the stand wrap a tough belt around the rear tire, press down
decompression button on head, ask helper to apply small throttle opening and pull belt quickly.
Adjust idle stop screw to absolute minimum idle speed if at all.
To stop the engine, press the brake pedal.
6
For proper operation of the cooling system it
is necessary to bleed the circuit by each air
bubble.
To adequately perform this operation proceed
as follows:
Fill the radiator with water and raising the kart
from the radiator side make the excess air
come out. Now top up with more water. Spin
the rear axle for a few seconds to release air
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