This is the HPI Nitro Star F3.5 V2 Engine with Pull Starter.
FEATURES: ABC construction, "A"luminum piston with "B"rass liner that is
Slide valve 2-needle carburetor with composite body that reduces
heat transfer and helps prevent vaporization of fuel
Race legal .21 cu in (3.5cc) displacement
22g lighter and 4mm taller than previous version
Two stage air filter with splash cover
Pull starter with one-way bearing encased in a 14mm hex for increased
Two year limited warranty beginning at date of purchase
INCLUDES: Nitro Star F3.5 V2 Engine with Pull Starter, R5 Glow Plug, Air Filter
REQUIRES: Glow Fuel: Car blend with 20-25% nitro content, use 20% for break-
Air filter oil
SPECS: Displacement: .21 cu in (3.5cc)
High Speed Needle, 2-2/2 turns clockwise from flush
Idle Screw: Set throttle trim on transmitter so that throttle is in
neutral position, turn screw counter-clockwise to reduce idle
speed, or clockwise to increase idle speed. Set idle speed high
enough to keep engine running smoothly, but not high enough to
engage the clutch.
Low Speed Needle: No adjustment recommended. For increased
performance, set after high-speed needle is adjusted. Turn needle
in 1/8 turn increments for better bottom end throttle response.
Caution-never turn in more than 2 turns from flush. This will
cause engine to run too lean and will result in damage.