Protek Samurai 321B Instruction Manual - page 12
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S TA R T E R B O X B AT T E R I E S
Use the battery type that is recommended by the starter box
manufacturer. Ensure that the battery is fully charged before use.
Recommended: ECP-LPH-5000-2S30 (x2) - EcoPower 2S Li-Poly
Battery Pack
F U E L B O T T L E
Use this to fill the fuel tank.
Recommended: PTK-7600 - ProTek R/C “Fast Fill” Fuel Bottle (500cc)
& PTK-7603 - ProTek R/C “Quick Pit” Fuel Gun
S I L I C O N E F U E L L I N E
Heatproof silicone tubing suitable for nitro fuel with an approximate
5mm outer diameter and 2mm inner diameter is required to make the
connection between the fuel tank and the engine.
TOOLS
H E X S C R E W D R I V E R
Use for engine installation. 1.5mm, 2mm, 2.5mm, 3mm
Recommended: PTK-8227 - ProTek R/C “TruTorque”
Metric Hex Driver Set
S C R E W D R I V E R
Necessary for carburetor adjustments. No.1, No.2, etc.
Recommended: PTK-8219 - ProTek R/C “TruTorque” Flat
Blade Screwdriver (4mm)
L O N G S O C K E T W R E N C H
W I T H P L U G G R I P
Recommended for easy removal and replacement of the glow
plug, this socket wrench incorporates a special internal grip.
Recommended: PTK-8202 - ProTek R/C “TruTorque” 4-in-1
Multi-Wrench
ProTek R/C offers a full line of batteries, chargers, servos and
accessories. Visit www.ProTekRC.com for more information.
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Piston
Cylinder Liner
Crankshaft
Near TDC
Slight taper
When the engine is cold.
When the engine is hot.
Low Speed Needle
(Metering Needle)
Idle Screw
(Throttle Stop Screw)
Mid Needle
(Mixture Control Valve)
High Speed
Needle
(Needle Valve)
Thermo Insulator
Carburetor Restrictor (Venturi)
Ball Link
Slide Boot
Exhaust
Gasket
Glowplug
Retaining Screw
O-Ring
O-Ring
Do not allow
bottom of crankcase
to touch chassis
Chamfer inside edges of bearers
Rotate the retainer
nut gently until it stops
Tighten a further
120º - 180º
High Speed
Needle
Open
Close
approx 0.5mm
Element glows when energized
Pliers
Replace the plug when the
element does not glow or is
burnt out.
Glow Plug Igniter
Turn the high speed needle clockwise
until it stops. This is the fully closed
position. Do not force it to turn further.
Approx. 0.5mm open
factory setting with the
restrictor removed.
Fuel
Fuel Tank Side
approx 1mm
Deliver fuel to the carburetor High speed needle position when
starting the engine.
Needle
30º
Close the high speed
needle approximately
30° as needed. This
procedure will be repeated
several times throughout
the break-in process.
Idle Screw
High Speed Needle
Low Speed Needle
Open
Close
Close
Open
HIGH SPEED NEEDLE
LOW SPEED NEEDLE
More fuel
Less fuel
More fuel
Less fuel
Mid Needle
Carburetor Body
Slide Valve
Carburetor Body
Low Speed Needle
Rotate the low speed needle until the head
sticks out 0.5mm from the ball link body.
This is the standard position.
Ball Link
First rotate the mid needle until its slotted
head is flush with the carburetor body. This is the
standard position.
5.5 turns out. Make adjustments with the slide in the open position.
2¾ turns out. Make adjustments with the slide in the open position!
Dirt and dust may lodge in marked places
7
8
Cause
Corrective Action
Fuel tank is empty.
Fuel not reaching the engine.
Fill the tank with fuel and repeat priming
procedure.
Glow plug element is burned out.
Glow plug battery discharged.
Replace glow plug.
Recharge or replace the battery.
Clogged fuel filter.
Air cleaner or internal silencer are dirty.
Clean or replace fuel filter.
Replace air cleaner element and clean
inside silencer.
Engine is over primed (flooded).
Remove glow plug and pump out excess
fuel.
Fuel tubing is disconnected.
Fuel tubing is kinked, split or has a hole.
Connect fuel tubing securely.
Check the tubing carefully and replace if
necessary.
Incorrect servo linkage.
Connect correctly after setting servo at
neutral.
Reverse rotating direction of the
starter box.
Make sure the starter box rotates counter
clockwise as seen from crankshaft side.
T R O U B L E S H O O T I N G
S Y M P T O M : E N G I N E FA I L S T O S TA R T