For use with savage rotate the carburetor 180 degrees.
SAVAGEに使用する時は、キャブレターの向きを逆にします。
Push down on carburetor while tightening the carburetor lock pin screw.
キャブレターを固定するときは押し込みながらロックピンを固定します。
Page 1/16
15231
High Speed Needle
メインニードル
Fuel Inlet
燃料取入れ口
Mid Range Needle
ミッドレンジニードル
Idle Adjustment Screw
アイドリング調整ネジ
Throttle Linkage
スロットルリンケージ
ボールジョイント
Low Speed Needle
スローニードル
Horizontal position.
水平にします。
Z700
15266
15231
Z901
Z904
I-15204-1
2
Engine Break In エンジンブレークイン
Important:
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.
Fill the tank completely with fuel. Use only 20 to 25% Nitro content
fuel. Use high quality branded model car fuel only. Using the non-car
fuels could void your warranty.d be damaged.
To prime the engine, use your finger to cover the
exhaust tip. Pull the starter chord several times
until fuel reaches the carburetor and no bubbles
are seen. Never pull the starter chord more than
30cm max as it will damage the starter.
Attach the glow igniter to the glow plug. Start the engine by pulling the starter chord in short pulls (no longer than 30cm max). Adjust
the throttle servo so the engine runs fast enough to idle smoothly without engaging the clutch or turning the wheels. Remove the glow
igniter as soon as the engine is running. Run the engine for one tank of gas. If the motor shuts off, repeat steps 1-4.
Turn on the transmitter and receiver, re-fill the fuel tank and follow the starting procedures in steps 1-4. With the tires
off the ground, use the radio to slowly increase the throttle until it reaches full speed, then release. This will help
clean the excess oil out of the engine. Because of the rich break-in settings, the motor needs to periodcally be
"cleaned out" to prevent it from stalling.
Place the vehicle on the ground. The vehicle should not move when idling. If it does, adjust the trim setting on the
transmitter so the vehicle does not move. Drive the vehicle in a 20 foot (6m) oval applying throttle (below 1/2
throttle), coast for a short period of time to allow the engine to cool, then accelerate again. Continue this process for
a total of two tanks of fuel.
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 follow signs.
(Engine is running too lean.)
At full throttle, these is no smoke from the
exaust.
STEP X
The engine hesitates or bogs.
Reduced top speed and loss of power.
Overheating
Temperatures above 250°C (120°F)
at the glow plug.
STEP X
If your engine is running lean, turn the needle
counter clockwise 1/4 turn to richen the fuel
mixture and repeat
Engine temperature can tell you if the engine is
running lean or rich.
燃料混合比とエンジン温度の関係は比例しています。
Attention 注意
Adjust carburetor to keep the
operating temperature below
250°F.
エンジン温度が120℃以下になるように
燃料混合比を調整します。
74151
HPI Racing Temp Gun
HPI温度計
Engine Temperature
エンジン温度
Danger
Danger
危険範囲
危険範囲
250°F
(
)
120°C
230°F
(
)
110°C
Safe Range
安全範囲
210°F
(
)
99°C
190°F
(
)
90°C
Break in
ブレークイン
Page 3/16
Fuel Mixture Tuning
燃料混合比の調節
Less Fuel = Lean
ニードルを時計回り=
混合比が薄くなる
More Fuel = Rich
ニードルを反時計回り=
混合比が濃くなる
Less Fuel = Lean
ニードルを時計回り=混合比が薄くなる
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.
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.
We recomend 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 and 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 250°C (120°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.
Fuel mixture needle settings are out of range
Engine could be worn out
Out of fuel
Contaminated fuel
Glow plug igniter is not charged
Glow plug is bad
No fuel flow
Engine flooded
Engine has overheated
Throttle valve isn’t adjusted properly
Air cleaner is blocked
Idle speed is set too low
Air bubbles in the fuel line
Glow plug is bad
Engine is overheated
Airflow through system is bad
Throttle servo is improperly set up
Throttle servo glitch
Idle adjustment screw is set too high
Low speed needle set too lean
Improperly set neutral on transmitter throttle trigger See your radio and car kit instructions for setting neutral on transmitter throttle trigger
Set the needles to the factory setting, see page 5 sec 6
Replace piston and sleeve
Refill fuel tank
Replace fuel
Charge glow igniter
Replace glow plug
Check fuel lines for cracks, leaks, and holes. Replace fuel line if necessary.
Remove glow plug and discharge fuel
Allow engine to cool, richen the fuel mixture and then restart
Set idle and adjust neddle valve to the maunfacturers recommended settings
Check air filter. Clean or replace if necessary
Adjust the idle speed
Check for leaks or cracks in the fuel line
Replace glow plug
Allow engine to cool and then restart
Check connections between tank, engine and exhaust
Set servo to neutral and reset linkages according to radio and model manufacturer’s specifications.
Replace the radio batteries
Set idle screw to factory setting, see page 5 for proper idle speed adjustment
Set low speed needle to factory setting, see page 5 for proper low speed needle adjustment
Carburetor Factory Setting (Break In Setting) キャブレター工場出荷時設定(初期設定)
High Speed Needle is set flush with groove, Idle Adjustment Screw, Low speed needle and Mid Range 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.