HPI Racing Savage X 4.6 RTR ユーザーマニュアル

12867-1

Instruction Manual

En

En Jp

Savage X 4.6 RTR

To prevent any serious personal injury and/or damage to property, please be responsible when operating all remote controlled models. Extra attention is

called for when operating any glow fuel powered model. These models can exceed speeds of 30 m.p.h. and use highly poisonous and flammable fuels.

Before Running

Please read manual (with parent, guardian or a responsible adult if necessary).

While Operating

Please do not run on a public street, this could cause serious accidents, personal injuries and/or property damage.

Please do not run near pedestrians or small children.

Please do not run in small or confined areas.

Before Operating

Make sure that all screws and nuts are properly tightened.

Always use fresh batteries for your transmitter and receiver to avoid losing control of the model.

Make sure no one else is using the same radio frequency as you are using.

Please confirm the neutral throttle position.

After Running

Shut off engine first, then turn off receiver switch and turn off transmitter last.

After running Savage X 4.6 RTR, it is necessary to perform routine maintenance. Failure to do this can result in increased wear and damage to the engine and chassis.

Heat, Fire, and Fuel Safety

Never use gasoline in a glow engine. Use glow fuel specifically designed for model car engines.

Do not run near open flames or smoke while running your model or while handling fuel.

Always store fuel in a well ventilated place, away from heating devices, open flames, direct sunlight, or batteries. Keep glow fuel away from children.

Glow fuel is flammable and poisonous. Glow fuel powered model engines emit poisonous vapors and gasses. These vapors irritate eyes and can be highly dangerous to your health.

Be aware that some parts will be hot after operation. Do not touch the exhaust or the engine until they have cooled.

Thank you for selecting the HPI Racing Savage X 4.6 RTR! This kit is designed to be fun to drive and uses top quality parts for

durability and performance. The instruction manual you are reading was designed to be easy to follow yet thorough in its expla-

nations. HPI Racing wants you to enjoy driving your new Savage X 4.6RTR. If you come across any problems or need some

help getting through a step, give us a call and we will do our very best to help you. You can also contact us on the internet at

www.hpiracing.com.

The caution or attention symbols will warn you about steps that can be very dangerous. Please read and understand the instructions carefully

before proceeding.

Caution

Failure to follow these instructions can damage

your kit, and cause serious bodily injury or death.

Attention

Failure to follow these instructions can cause

injury to yourself or others. You might also cause

property damage or damage your kit.

Caution

Thank you

2

3

Contents

Page Contents Section

Overview

4

1

Start Up Guide

2

6

36

Exploded View

5

40

Parts List

6

Preparation for Running

6

2 - 1

HPI Roto Start System Preparation

7

2 - 2

Glow Plug Igniter Preparation

8

2 - 3

Transmitter Preparation

9

2 - 4

How To Control R/C Models

10

2 - 5

Linkage Setup

11

2 - 6

Starting Engine and Break In

12

2 - 7

Engine Tuning After Break In

14

2 - 8

Optional Tuning

15

2 - 9

Carburetor Factory Setting

16

2 - 10

Glow Plug

16

2 - 11

Troubleshooting

17

2 - 12

Option Guide

4

35

Engine Guard

35

4 - 1

18

Maintenance

3

Maintenance Chart

18

3 - 1

Chassis

19

3 - 2

Wheel

19

3 - 3

Air Filter

20

3 - 4

Radio

21

3 - 5

Spur Gear

22

3 - 6

Engine and Fuel Tank

24

3 - 8

Engine and Tuned Pipe

25

3 - 9

Gear Box and Differential

27

3 - 11

Shock

29

3 - 13

2 Speed Setup

23

3 - 7

Clutch

26

3 - 10

Front and Rear Differential

28

3 - 12

Throttle Linkage

31

3 - 15

HPI Roto Start System

34

3 - 17

Servo

30

3 - 14

Engine

32

3 - 16

Chassis

36 5 - 1

Transmission

37 5 - 2

Gear Box

38 5 - 3

Engine

39 5 - 4

Parts Reference

40 6 - 1

Option Parts List

46 6 - 3

Parts List

44 6 - 2

4

Screwdriver

2029 (US,JP)

Battery Pack 7.2 Volt

HB70452

Charger for Battery Pack 7.2 Volt

AA Alkaline Batteries

We recommend that you use fuel

containing 20-25% nitro glow fuel.

Transmitter

Roto Start

Z150

Antenna Pipe

Radio Box Parts Battery Case

Inner Cone

6154

Nylon Strap

Clutch Bell Body Mount

Air Filter Element Engine Guard

R/C Car

Allen Wrench

70332

Glow Plug Wrench

8

mm

Z904 2.0mm

Z903 2.5mm

Z905 3.0mm

9062 (US,EU)

9063 (JP)

Nitro Car Cleaner

Thread Lock

30035 (JP)

Instant Cement

Z190

Air Filter Oil

39014 (JP)

Oil Spray

Z164

Grease

Components

Included Tools Parts Bag

Equipment Needed

Necessary for maintenance

Z960

Turnbuckle Wrench 4mm / 5.5mm

74151

HPI Racing Temp Gun

74318/74348 (US)

38704/38705 (JP)

Glow Fuel

20% - 25%

2

mm

2.5

mm

1.5

mm

3

mm

x12

1

Overview

Rag

Brush

74104 (EU 3Pin)

74105 (US)

74106 (EU 2Pin)

74107 (JP)

Glow Plug Igniter

Screwdriver

9067

Fuel Bottle

4 - 5mm

Z901 1.5mm

This charger is

powered by a

standard 12V

lighter socket.

This charger

designed for

Ni-MH battery.

Needle Nosed Pliers

Snap Ring Pliers

5.5

mm

7

mm

Z950

Cross Wrench

See Section 3-9

3-9

See Section 3-10

3-10

See Section 4-1

4-1

See Section 5-3

5-3

5

Chassis Details

Engine Details

Caution

Receiver Antenna

Radio Box

Fuel Tank

Shock

Drive Shaft

Wheel Hub

Front Gear Box

Engine Roll Bar

Brake

Wheel Nut

Center Gear Box

Glow Plug

Pressure Tube

Air Filter

Fuel Tank Cap

Fuel Tube

Fuel Tank

Carburetor

Clutch

Exhaust Pipe

Rear Gear Box

Do not run on public streets or highways.

This could cause serious accidents,

personal injuries, and/or property damage.

Make sure everyone is using a different

frequency (See section 3-5) when driving

together in the same area.

Receiver Switch

OFF

ON

6

Start Up Guide

Connect and install receiver batteries, then uncoil antenna wire, and pull antenna wire through hole in battery

cover. Secure the battery cover and install antenna pipe.

Radio Box

Battery Case

Preparation for Running

Body Removal

Receiver Battery Installation

Receiver Battery

6123

7768

6123

Attention

2-1

2

Please read the instructions before running.

Optional Battery

LOCK!

2012

Hump Battery Pack For Receiver (6V 1200mAh/Ni-MH)

6123

Body Pin

For extended running, we recommend #2012 Hump Battery Pack.

Z150

AA Alkaline Batteries

Only use alkaline batteries in the receiver.

4x

AA Alkaline Batteries

Note Direction

Do not cut or shorten

antenna wire.

4x

1 2

85237

2

85236

2

85027

Roto Start Details

Battery Installation

Roto Start Battery Charging

Charger for Battery Pack 7.2 Volt

(Not included)

Caution

7

Roto Start makes engine starting easier. You must charge the battery before use.

After charging the battery, insert into Roto Start and connect the battery.

Then connect starter shaft.

Disconnect the battery when Roto Start is not being used.

Only use charger designed for 7.2Volt battery pack.

HPI Roto Start System Preparation

2-2

Roto Start Unit

Circuit Breaker

Battery Lid

Switch

Switch Cover

Starter Shaft

Battery Pack 7.2 Volt

(Not included)

Battery Pack 7.2 Volt

(Not included)

Do not use Nickel Cadmium battery charger for Nickel Metal

Hydride batteries. If you do not use the special charger for Nickel

Metal Hydride batteries, The batteries will be damaged.

Note Direction.

If engine locks, the circuit breaker will stop the Roto

Start. Remove Roto Start and check engine for

flooding or damage. If there is no problem with the

engine, reset the circuit breaker by pushing the

button and try to start the engine again.

ON OFF

How to Use Roto Start

This charger is powered by a standard 12V lighter socket. This charger is designed for Ni-MH battery.

1

2

8

Insert starter shaft into engine back plate. Press down the switch to crank the engine. If engine locks,

the circuit breaker will stop the Roto Start. Remove Roto Start and check engine for flooding or

damage. If there is no problem with the engine, reset the circuit breaker by pushing the button and try

to start the engine again.

Do not use the Roto Start

continuously for more than 5

seconds at a time. Using the

Roto Start for longer than 5

seconds will cause damage.

Back Plate Unit

Starter Shaft

Do not use Nickel Cadmium battery charger for Nickel Metal Hydride batteries.

If you do not use the special charger for Nickel Metal Hydride batteries, the

batteries will be damaged.

Switch

Switch Cover

Remove glow plug igniter as soon as the engine is running.

Leaving it connected will drain the battery.

Glow plug igniter is necessary for starting nitro engine.

These items are not included with your kit. They must be

purchased separately. Follow the instructions included with

your glow plug igniter and charger. If the glow plug igniter is not

fully charged, the engine will not start.

Glow Plug Igniter Preparation

2-3

You must charge before use.

Glow Plug Igniter

Compatible Charger

74104 (EU 3Pin)

74105 (US)

74106 (EU 2Pin)

74107 (JP)

Glow Plug Igniter

Optional Battery Charger

HB70452

GT Escape Charger

12V DC power source necessary.

Two batteries can be charged at

the same time.

Caution

Circuit Breaker

ON OFF

12V

9

AA Alkaline Batteries

8x

Do not mix batteries of

different ages or types.

Antenna

Extend the antenna to the maximum

length for best performance.

Open battery cover at the bottom of transmitter.

Install batteries. Follow the direction of batteries

designated in the inside of battery box.

The Savage X includes a two-channel

TF-3 Radio. When installing a reverse

module, you must use option part

#87039, which includes a mixer that

allows the reverse module to function

with the third servo.

Steering Wheel

To be used for steering operation.

Throttle trigger

To be used for throttle operation.

AM 27MHzTransmitter Crystal (TX)

The crystal can be replaced to change frequencies.

Note: You must also change receiver crystals!

Do not use FM crystals

Steering Trim

To be used for trimming the steering

operation.

Throttle Trim

To be used for trimming the throttle

operation.

Steering Dual Rate

Battery Cover

To be used to adjust steering servo

rate and range.

Servo Factory Settings

Battery Level Indicator

Power Switch

Reverse Switch

Good Batteries

Low Batteries

AM Transmitter crystal (TX)

AM Receiver crystal (RX)

Forward

Brake

Stop (Neutral)

Transmitter Preparation (HPI TF-3 AM 2ch)

2-4

Attention

Transmitter Battery Installation

ON

OFF

Straight (Neutral)

Right turn

Left turn

80552

HPI TF-3 Transmitter (2ch/AM27MHz)

ON

10

Extend the antenna

Forward

Brake

Stop (Neutral)

Straight (Neutral)

Right turn

Left turn

How To Control R/C Models

1

2

3

Retract the antenna

3

2

1

Make sure no one else is using the same radio frequency as you are using. Check the radio

system and range before every driving session. To properly check the range, have a friend hold

the R/C car with the engine off and walk to the farthest distance that you plan to operate your

R/C car. Operate the controls to make sure the model responds correctly. Do not operate the

model if there is any problem with the radio system. If you switch on the R/C car first before the

transmitter, you may lose control of the R/C car.

If you switch off the transmitter first before the R/C car, you may lose control of the R/C car.

Turning the transmitter wheel left and right will make the

front tires of the car do the same. Turning the wheel a

small amount will make the model perform a wide turn.

Turning the wheel a large amount will make the model

perform a sharp turn.

Pull the throttle to drive forward and press it away for

brakes. The more you pull the throttle, the faster the car

will move forward.

OFF

ON

Right turn

Left turn

Activating R/C Unit

Turning R/C Unit Off

Turn on transmitter first, then turn on receiver.

Turn off receiver first, then turn off transmitter.

Throttle Trigger

Steering Wheel

2-5

Check Max. Range

Transmitter Operation

Caution

Approximately

1mm (0.04")

Approximately

1mm (0.04")

Adjustment

see section 2-9

11

Linkage Setup

Trim adjusts neutral position of servo.

Make adjustments with the engine off.

Remove air filter to adjust throttle linkage. After setup is complete, reinstall the air filter. See Section 3-4.

3-4

Turn throttle trim little by little and adjust rods as shown.

Pull full throttle.

Make sure the carburetor is open.

Push trigger to the full brake position.

Try pushing the car to make sure the

brake works.

Brake Adjustment Dial

Carburetor

Brake Adjustment Dial

More Braking

Less Braking

Turn steering trim to set tires in

completely centered position.

If throttle linkage is not set up correctly the car may lose control after

the engine is started.

Important

No brake drag at neutral.

Make sure there is no brake drag at neutral.

Setting Full Throttle

Setting Full Brake

Optional Throttle Linkage Setup

Steering Trim Setup

Throttle Linkage Setup

Important

2-6

Open

Steering trim

Throttle trim

ON

12

Keep the wheels off the ground.

These instructions will explain the running procedure, how to prepare the car, turn on radio equipment, start the engine, break in the engine,

shut off the engine, and shut off the radio equipment. When starting the engine for the first time, you must perform the break in procedure.

Make sure no one is using the same frequency. Turn on transmitter first and receiver second. If you turn on the receiver first, it can cause you

to lose control of the car.

Step 1

Step 2

Step 3

Step 4

Preparation for Engine Start

Fill Fuel Tank

Turn On Radio System

Priming Engine

Flooded Engine

Fill the tank completely with fuel. Use only 20 to 25%

nitro content fuel. Use high quality model car fuel only.

Using non-car fuels could void your warranty.

Make sure no one is using the same frequency. Turn on transmitter first, then turn

on receiver. Check the throttle and steering functions and check the radio range

before starting engine. If you switch on the R/C car first before the transmitter,

you may lose control of the R/C car.

To prime the engine, use your finger to cover the exhaust tip. crank engine with Roto

Start until fuel reaches the carburetor and no bubbles are seen. Using Roto Start too

long will cause the engine to be flooded.

Starting Engine and Break In

Remove the glow plug and turn the engine

using the Roto Starter to remove excess

fuel. Reinstall the glow plug .

If there is too much fuel in the cylinder, the

engine will not start.

Follow the step below to remove excess

fuel from the cylinder.

Extend the antenna

1

2

ON

NO! OK!

74318/74348 (US)

38704/38705 (JP)

Glow Fuel

2-7

70332

3

ON

Rag

Fuel Tube

Switch

Do not use the Roto Start

continuously for more than 5

seconds at a time. Using the Roto

Start for longer than 5 seconds will

cause damage.

We recommend that you use fuel

containing 20-25% nitro glow fuel.

20% - 25%

Back Plate Unit

13

Break In

Engine Shut Off

Use a Rag Pinch the Fuel Line

Turning R/C Unit Off

Turn off receiver first, then turn off transmitter.

Use a rag to cover the exhaust tip. This

will stop the engine. Be careful! The

exhaust is extremely hot so be sure to

use a thick rag.

In extreme cases or emergencies

you can pinch the fuel line to stop

the flow of fuel to the carb.

HPI engines will feel tight at the top of their stroke when they are new or when they have not reached

their normal operating temperatures. The piston and cylinder sleeves are designed to achieve proper

running tolerances when they are properly broken in and are operating at the correct temperature. New

engines need a break in period of about 3 to 4 tanks of fuel before they can be run at full throttle, if not the

engine could be damaged.

Break in should be performed on a flat level surface.

Glow Plug and Starter

Attach the glow igniter to the glow plug. Start the engine by

cranking with the Roto Start. Remove the glow igniter as soon

as the engine is running.

If the glow plug igniter is left connected while the engine is

running, it will drain the battery and damage the glow plug.

The engine must never be run without the air

filter in place.

Attention

New engines need a break in period of about 3 to 4 tanks of fuel before

they can be run at full throttle, if not the engine could be damaged.

If the air filter falls off, you must stop the engine immediately.

Attention

20’ (6M)

Step 5

Step 6

Step 7

Step 8

1

After the engine starts, let it run with the wheels off the ground for one tank of fuel.

After the first tank, drive the car in a circle at half throttle for two tanks of fuel.

2

If you switch off the transmitter first before the R/C car, you may lose control of the R/C car.

2

OFF

Retract the antenna

3

Rag

ON

Switch

Fuel Tube

1

OFF

Do not use the Roto Start continuously for more

than 5 seconds at a time. Using the Roto Start for

longer than 5 seconds will cause damage.

Glow Plug

Glow Plug Igniter

2-8

Step 1

Step X

Step 3

Step 2

Step 4

High Speed Needle

2 1/2 turn MAX clockwise

from flush.

Use screwdriver

to adjust high

speed needle.

Low Speed Needle

Idle Adjustment Screw

Roto Start

Exhaust Outlet

Crankcase

Glow Plug

Heat Sink

Carburetor

The carburetor is set up from the factory for break in (2-9). After break

in the carburetor must be tuned for high performance running.

2-9

Engine Tuning After Break in

Read this section carefully: Failure to follow these tuning steps could

result in damage to your engine, and void your warranty!

Important

Engine Features Carburetor Features

Tuning for Optimum Performance

Fuel Mixture Tuning Tip

Caution

2 1/2 turn

MAX

Step 1

Step X

Step 4

Step 1 Step 4

Turn the high speed needle clockwise in 1/8 turn

increments

to lean out the fuel mixture for

increased top speed and throttle performance.

Drive the car to notice changes in speed and

throttle response.

Continue Tuning:

Continue leaning the carb in Clockwise 1/8 turn

increments. (Maximum of 2 1/2 turns from flush.)

STOP Tuning:

Stop tuning and go to if your engine shows

any of the following signs. (Engine is running too lean.)

At full throttle, there is no smoke

from the exhaust.

The engine hesitates or bogs.

Reduced top speed and loss of power.

Overheating

Temperatures above 250°F (120°C)

at the glow plug.

If your engine is running lean, turn the needle

counter clockwise 1/4 turn to richen the fuel

mixture and repeat.

14

High

Speed

Needle

Safe Range

250°F

(

120°C

)

230°F

(

110°C

)

210°F

(

99°C

)

190°F

(

90°C

)

Danger

Break in

Attention

74151

HPI Racing

Temp Gun

More Fuel = Rich

Less Fuel = Lean

Fuel Mixture Tuning Engine Temperature

More Fuel = Rich

Rich Fuel Mixture

A slightly rich fuel mixture delivers a cooler running

temperature and more lubrication but with slightly

less power and longer engine life.

Less Fuel = Lean

Lean Fuel Mixture

Provides strong and efficient combustion and

power, but if you lean out too much the result is less

lubrication, more engine heat and shorter engine

life.

Adjust carburetor to keep the

operating temperature below

250°F.

Engine temperature can tell you if the engine is

running lean or rich.

Danger

Screwdriver

4 - 5mm

15

The idle speed is set after the high-speed needle is adjusted and the

engine is up to operating temperature. To properly set the Idle

Adjustment Screw, turn on your radio system and set the throttle trim on

the transmitter so that the throttle is in its neutral position. This will

ensure that the throttle slide is fully closed and resting against the idle

adjustment screw. Turn the idle adjustment screw counter clockwise to

reduce the idle speed, or clockwise to increase it. The idle speed should

be set high enough to keep the engine running smoothly but not engage

the clutch and turn the wheels. Too high of an idle speed will

prematurely wear out the clutch shoes and brake disk.

Idle should be set so that at neutral throttle position the engine is running without engaging the clutch and moving the car forward.

Improper Idle Speed Setting:

Clutch engaged and wheels turning.

Proper Idle Speed Setting:

Engine runs smoothly without wheels turning.

If idle is unstable, adjust the low speed

needle to get a stable idle. Afterwards,

you need to readjust the idle adjustment

screw.

We recommend that you do not touch the Low Speed Needle.

If adjustment is needed, the low-speed mixture is set after the high-speed needle

is adjusted and the engine is up to operating temperature. Set the needle flush (Factory Setting) with the carburetor body, this setting is

ideal for breaking in and starting your motor. For increased performance turn the needle in 1/8 turn increments; this will improve bottom

end throttle response. To test your setting, place the car on the ground and let the engine idle for 30 seconds then accelerate to 3/4

throttle. If there is a lot of white smoke and the car accelerates slowly, the mixture is too rich. If the engine accelerates quickly and then

sputters, the mixture is too lean. When the low-speed needle is set correctly the engine's throttle response should be smooth and quick.

CAUTION: Never turn in more than 2 turns from flush this will cause the engine to run too lean and may damage your engine!

If the Low

Speed Needle is set too lean you will experience the following:

Flame out at part or 3/4 throttle, overheating (temperatures above 280 F at

the glow plug). If your engine is running too lean, reset the Low Speed Needle to its factory setting (Flush) and start the tuning process

again.

Idle Adjustment Screw

Low Speed Needle Adjustment

1mm (0.04")

Low Speed Needle

More Fuel = Rich

Less Fuel = Lean

Flush (Factory Setting)

Following the tuning steps, tune the engine until its maximum performance is reached. While a lean motor will have higher performance, it can

lead to premature engine wear or failure. Use the following information to tune your engine to your driving conditions. Remember a slightly rich

setting is a safer setting.

Engine temperature can tell you if the engine is running lean or rich. If you check the engine temperature, you can understand how to tune your

carburetor. Adjust carburetor to keep the operating temperature below 250°F. If the engine temperature goes over 250°F, the engine will be

damaged.

If you turn the needle past the closed point, it will be damaged. Do not tighten past closed.

If you lose the needle setting, you can reset the factory setting (See Section 2-10) and re-tune.

2-10

Fuel Mixture Tuning Tips

Idle Adjustment Screw

RPM High

RPM Low

Optional Tuning

No!

Ok!

2-9

16

Good Plug

Element glows

when tested.

Filament

Hot!

Glow Plug

Pliers

Glow Plug Igniter

Bad Plug

Element may be

damaged or broken if it

doesn’t light up

completely.

Bad Plug

Element is broken or

doesn’t light up at all.

Checking glow plug

How Glow Plugs Work

Proper Glow Plug Selection

Flush

High Speed Needle, Idle Adjustment Screw and Low Speed Needle are

designed to be set flush with the carburetor body. This makes it easy to

reset the carburetor to the Factory Break In Setting if needed.

Unlike full sized car engines that use spark plugs and a distributor to fire the cylinders in the combustion cycle, glow engines rely

on glow plugs. In a Nitro engine, ignition is initiated by the application of a glow igniter. When the igniter is disconnected, the heat

inside the combustion chamber keeps the glow plug filament glowing, firing the next cycle, thereby keeping the engine running.

Ignition timing in a glow engine is automatic. At higher RPM’s the plug becomes hotter, firing the fuel/air mixture earlier. At lower

RPM’s the plug becomes cooler, firing the fuel/air mixture later. Since the glow plug performs so many important functions,

proper plug selection and maintenance are crucial to a properly running engine.

Proper glow plug selection depends on several factors: Fuel

type, nitro methane content, weather, and altitude can drastically

affect performance. Finding the best combination of fuel and

plug temperature for your driving condition is the key to getting

the maximum performance out of your Nitro Star Engine.

Extending the Life of your Glow Plug

To maximize and extend the life of your glow plug follow these simple tips;

Remove the glow igniter when using more than 1/2 throttle or if the engine does not start after a few seconds.

Do not run the engine lean, lean conditions will overheat the plug causing the element to be damaged or fail.

Use the best Fuel/Plug combination for your driving conditions.

Use a fuel that has a lower nitro content.

When to Replace the Glow Plug

Fuel and temperature will have an effect on the performance,

reliability, and life span of the glow plug and therefore it

should be considered an expendable engine component.

Aside from burnout or plug failure, there are several signs that

can indicate the plug should be replaced.

Plug filament/plug body is discolored or the surface is rough.

Plug filament is distorted or bent.

Engine cuts out when idling.

Engine becomes difficult to start.

High Speed Needle

Flush with Groove

Low Speed Needle

Idle Adjustment Screw

When needle is over tightened

, the

needle is damaged.

Glow Plug

Carburetor Factory Setting (Break In Setting)

Attention

2-11

2-10

Outdoor Temp

Cold

Hot

Glow Plug Glow Plug Characteristics

Hot plug will be easy to start and

stable for tuning. But will fail

sooner at high engine temperature.

Cold plug will have better mid,

high RPM power and will last

longer at high temperature.

Glow Plug Medium R3

Glow Plug Medium Cold R4

Glow Plug Cold R5

17

Engine Does Not Start.

Out of fuel.

Fill the tank with fuel and prime engine.

Engine Starts Then Stalls.

Out of fuel.

Fill the tank with fuel and prime engine.

Engine Running, But Car Doesn’t Move.

See section 2-10 on carburetor factory setting then see section

2-8 on engine tuning after break in.

2-10 2-8

Erratic Control.

Weak batteries in transmitter and receiver. Install fresh batteries.

Improper antenna on transmitter or model. Fully extend antenna.

Do you have a clutch problem? See section 3-10 on clutch maintenance.

3-10

Are the brakes stuck?

See section 2-6. Make sure there is no brake drag at neutral.

Roto Start working properly? Make sure Roto Start starting shaft is turning.

Glow plug igniter not charged. Charge glow igniter battery.

Glow plug is bad. Replace glow plug.

Engine flooded. Discharge fuel.

Air filter is blocked. Check air filter, clean or replace if necessary.

Air filter is blocked.

Check air filter, clean or replace if necessary.

Engine is overheated,

Allow engine to cool and then restart.

Idle speed is set too low.

Adjust the idle speed.

Do you have a drivetrain problem?

Check drivetrain for damage.

Throttle isn’t adjusted properly.

Throttle servo is improperly set up.

Set servo to neutral and reset linkage according to radio and

model manufacturer’s specifications.

Throttle servo is improperly set up.

If R/C car does not move or you have no control, see below.

Troubleshooting

2-12

Section Problem Cause Solution

2-7

2-2

3-17

2-3

2-11

2-7

3-4

2-10

See section 2-10 on carburetor factory setting then see section

2-8 on engine tuning after break in.

2-10 2-8

Set servo to neutral and reset linkage according to radio and

model manufacturer’s specifications.

Throttle isn’t adjusted properly.

2-10

2-6

2-7

2-8

2-9

3-6

3-11

3-7

3-10

3-12

3-6

3-11

3-7

3-10

3-12

Do you have a drivetrain problem?

Check drivetrain for damage.

3-10

Gear mesh is incorrect. See section 3-6 on center gear box maintenance.

3-6

Do you have a clutch problem? See section 3-10 on clutch maintenance.

3-10

2-6

Receiver battery capacity is low.

Exchange receiver battery.

3-5

Brake does not work. See section 2-6 on linkage setup.

2-6

3-4

18

9062 (US,EU)

9063 (JP)

Nitro Car Cleaner

Thread Lock

Z190

Air Filter Oil

Needle Nosed Pliers

Necessary for Maintenance

3

Maintenance

After running you should clean the chassis and perform routine maintenance to keep the car in good running order.

Maintenance Chart

3-1

5.5

mm

7

mm

Z950

Cross Wrench

87546

Glow Plug Wrench

8

mm

Maintenance Item

Reference Section

Chassis Maintenance

Clean the chassis after every run.

page 19

3-2

Wheel Maintenance

Clean the wheels after every run.

page 19

3-3

Air Filter Maintenance

Clean the air filter after every run.

page 20

3-4

Radio Maintenance

Check the battery before every run.

page 21

3-5

Spur Gear Maintenance

Maintain Spur Gear before every run.

page 22

3-6

2 Speed Setup

Maintain 2 Speed before every run.

page 23

3-7

Engine and Fuel Tank Maintenance Maintain Engine after each day’s running.

page 24

3-8

Engine and Tuned Pipe Maintenance Maintain Engine after each day’s running.

page 25

3-9

Clutch Maintenance

Maintain Clutch after each day’s running.

page 26

3-10

Gear Box and Differential Maintenance

Maintain Gear Box after each day’s running.

page 27

3-11

Front and Rear Differential Maintenance

Maintain Differential after each day’s running.

page 28

3-12

Shock Maintenance

Check the Shocks before every run.

page 29

3-13

Servo Maintenance

Check the Linkage before every run.

page 30

3-14

Throttle Linkage Assembly

Check the Linkage before every run.

page 31

3-15

Engine Maintenance

Maintain Engine after each day’s running.

page 32

3-16

HPI Roto Start System

Check the system before every run.

page 34

3-17

Every 1 Tank Every 5 Tank Every 10 Tank

For maintenance schedule, refer to right side of the chart. After running, clean the chassis and check all moving parts for damage. If any

parts are broken or damaged, repair or replace them before the next run.

Regular maintenance is necessary to prevent damage to the car and maintain its performance.

Rag

Brush

Screwdriver

30035 (JP)

Instant Cement

Z164

Grease

39014 (JP)

Oil Spray

Screwdriver

Z960

Turnbuckle Wrench 4mm / 5.5mm

Allen Wrench

Z904 2.0mm

Z903 2.5mm

Z905 3.0mm

2

mm

2.5

mm

1.5

mm

3

mm

Z901 1.5mm

Snap Ring Pliers

1

5

10

Screwdriver

19

Chassis Maintenance

Make sure the tire is secure on the wheel. Re-glue if necessary.

Savage X standard hex hub is 17mm hex

hub. 14mm hex hub is also included for

use with optional wheels.

Use 17mm glow plug wrench to remove and install wheels.

Wheel Removal and

Installation

Re-Glue Wheel

Wheel Hub Selection

3-2

Wheel Maintenance

3-3

After running, clean the car and lubricate these points.

Replace damaged parts, check that all the screws are tight.

Oil Spray

Rag

Brush

87546

Glow Plug Wrench

86804

Hex Wheel Hub 17mm

Z260

PIN 2.5x12mm

Z680

Flanged Lock Nut M5x8mm

8

mm

8

mm

Use small amount to secure tire.

30035 (JP)

Instant Cement

Z680

Flanged Lock Nut M5x8mm (Black)

Z682

Flanged Lock Nut M5 (Black)

Wheel Cross Section

Std.

86804

Hex Wheel Hub 17mm

86066

Hex Wheel Hub 14mm

Option

3

Attention

20

Air Filter Maintenance

Dirt is the biggest enemy of a nitro engine and proper air filter maintenance is one of most important factors that

will affect your engines longevity. We recommend cleaning the element after every run. It is always a good habit

to check the element after every run to make sure it is properly seated in the filter body and that the body is fully

seated on the carburetor. Never run the engine without the air filter.

Remove and clean the air filter with nitro fuel when dirty. Spray fuel

through the clean side to ensure proper dirt removal. Squeeze the filter

to remove excess fuel. To re-coat the air filter with oil, place the

element in a plastic bag with several drops of air filter oil. Using your

fingers, work the oil into the element making sure it is evenly distrib-

uted.

After properly cleaning the filter element make sure it is reinstalled correctly. Make sure there are no gaps

between the element and body. Make sure the filter is fully seated on the carburetor and secure it with a tie strap.

Never run the engine without the air filter.

3-4

Proper Air Filter Maintenance

Cleaning the Filter Element

Reinstalling the Filter Element

6145

6154

Z190

Air Filter Oil

6154

Nylon Strap

2.5

mm

If the air filter falls off, you must stop the engine immediately.

Attention

1 2

Make sure the air filter is

fully seated on the carbure-

tor and secure it with a

nylon tie strap (6154).

Make sure the air filter is

fully seated on the carbure-

tor and secure it with a

nylon tie strap (6154).

Allen Wrench

Z903 2.5mm

2.5

mm

87199

a

Z224

Z543

87204

a

87204

b

87199

b

87199

c

87199

d

Cap Head Screw M3x10mm

Z543

Washer M3x8mm

Z224

Use one capful of air filter oil.

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HPI Racing Savage X 4.6 RTR ユーザーマニュアル

HPI Racing Savage X 4.6 RTR ユーザーマニュアル

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