721 Scuderia Gen 2 Pro Nitro Engine - Parts Diagram

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VCX2-A Carburetor
Off-Road
ER210074
CARB VCX2-A SET
3.5CC S SERIES BUGGY
Standard opening
Approximately 0.5mm
Mid Range
For adjusting air/fuel
ratio (air-fuel mixture) at
medium rpm and thus
acceleration feeling.
• Short needle
• long needle
Top Speed Needle
For adjusting air/fuel ratio
(air-fuel mixture) at
maximum rpm (fully opened
throttle).
• Clockwise – leaner
• Counterclockwise – richer
Standard Position
3 turns opened from the
fully closed position.
Low Speed Needle
For adjusting air/fuel ratio
(air-fuel mixture) at low rpm
(fully opened throttle).
• Clockwise – leaner
• Counterclockwise – richer
Standard Position
3 and 1/2 turns opened from
the fully closed position.
Idle Screw
For setting the minimum
idle speed.
• Clockwise – higher idle
• Counterclockwise –
lower idle
Short needle – Stock
Smoother acceleration
Higher mid to top range power
Long needle - optional
Higher low to mid range power
lower top end power