FORCE ENGINE 2595506 Combustion Engine Instruction Manual

FORCE ENGINE 2595506 Combustion Engine

Prescribed use

The highly developed combustion engine you purchased is intended to be used in suitable models. Please observe the following safety instructions and danger warnings.
All company names and product designations contained herein are trademarks of the respective owners. All rights are reserved.

General information

Dear customer, the following operating manual gives notes and information on the operation of the engine.
Combustion engines for models are a powerful alternative to electric motors if the much louder operating noise and the exhaust fumes do not matter in model operation.
They are, however, not so easy to handle and require special treatment before, during and after operation. In the case of wrong treatment, the engine has a low power output, does not run correctly, or is inoperative after only a short runtime (please bear in mind that improper operation leads to loss of guarantee/warranty!)
As a matter of course, these operating instructions cannot impart any practical knowledge. If you have never worked with a combustion engine, we recommend joining a model construction club in your area.
There, you will surely find help for the first steps to a successful handling of model combustion engines.

Up-to-date operating instructions

Download the latest operating instructions at www.conrad.com/downloads or scan the QR code shown. Follow the instructions on the website.

Explanation of symbols

A symbol with an exclamation mark in a triangle points to important information in these operating instructions which must be observed.

Safety instructions

We do not assume liability for damage to property or personal injury caused by improper use or the failure to observe the safety instructions. The guarantee will expire in any such case.
Depending on the engine type and the respective model in which it is installed (airplane, car or ship model), some of the following safety instructions might not apply.
Keep the product out of reach of children. It is not a toy; it should be kept out of reach of children under 14 years of age! Before each start, ensure the safe operation of your model and of the engine.
Even normal engine vibrations can lead to the loosening of the engine and other drive parts.
Therefore, check if the engine and all drive parts sit correctly prior to each new starting of the engine.

Caution, important note!
Operating the model can lead to material and/or personal damage. Therefore, make sure that you are properly insured when using the model, e.g. by taking out private liability insurance. If you already have insurance, enquire whether the operation of the model is covered before operating it.
Please note: In some EU countries you are required to have insurance for any flying models!

Never operate the engine in closed rooms. The fumes are poisonous! If the engine is operated outside the model, a suitable test stand is to be used.
Keep children and spectators away from running engines.
For starting the engine, use a suitable starter or finger protection (airplane models with propeller). Some engines allow a comfortable start with a so- called pull starter.
Engine and sound absorber become very hot during operation. Risk of burns! To stop the engine, interrupt the fuel supply or close the carburettor tap. Never try to stop a running engine with your fingers. Risk of severe injuries!
With airplane models with a propeller, never stand in front of or next to the engine/ propeller; there is a high risk of injury! Setting and adjustment work must be carried out from the rear!
Make sure that no fuel leaks in an uncontrollable way during the operation of the engine; risk of fire, explosion and burns!
Never hold any objects into moving drive parts (e.g. propeller). Do not block the engine.
Propellers must not be repaired. Damaged propellers must be replaced!

The transmitter and receiver must be left switched on as long as the engine is running in order to keep the model and the engine under control at any time.
Do not try to experiment with your engine. Seek the advice of an experienced modeller or let the latter help you with the assembly.
Do not leave packaging material unattended. It may become a dangerous toy for children.

Mounting the engine

The engine must be fastened firmly and free of oscillation on a stable engine support (preferably made of aluminium). To that effect, use sufficiently dimensioned screw bolts and secured screw nuts. The engine should be plane with the clamping surface so that the motor flange cannot distort.

Adjusting the carburettor

In general, carburettors are equipped with two independent adjustable needles. The first needle, the full throttle needle, is located directly at the fuel connection. With this needle, the full throttle run is adjusted.
When the needle is unscrewed, the engine is supplied with more fuel. This is called a rich carburettor setting. When the needle is screwed into the nozzle connection, the flow cross section is reduced and the engine is supplied with less fuel. This is called a lean carburettor setting.
The second needle is the idle speed needle. With some airplane engines, for example, the idle speed needle is located opposite to the full throttle needle on the other side of the carburettor.
With this needle, not only the idle speed but also the transition from idle speed to full throttle is adjusted.
As with the full throttle needle, the air mixture is made leaner by screwing in the needle. When the needle is unscrewed, a richer setting is achieved. The full throttle needle is to be opened by approx. 2–3 turns. The same is to be done with the idle speed needle.
If the tip of the idle speed needle is visible through the open carburettor, the needle is to be set in such a way that the tip of the needle starts to immerse in the counter cone when the carburettor is half closed.
The engine can be started with the carburettor being opened by ¼. After the warming-up, the full throttle is adjusted. The highest engine speed is adjusted by screwing in the full throttle needle, with the carburettor being opened completely. As the engine becomes weaker during operation, you should now unscrew the full throttle needle slightly on the “richer” side.
A too lean idle speed setting causes the engine to stop when throttling the engine or accelerating. If the engine becomes slower in idle speed until it stops, or if it accelerates only reluctantly, this means that the idle speed setting is too rich and must be made leaner.
Modifications to the needle must only be carried out in small steps; this applies especially to the idle speed needle. Taking an analogue watch as an example, an adjustment by “5 minutes” can already be too much.
A correctly set engine will always run smoothly, also at longer idle speed running times, and will accept the throttle promptly.
If you have no experience with model combustion engines at all, we recommend the help of an experienced modeller. You can thus prevent not only lengthy (unsuccessful) trying but also a damaging of the expensive engine.

Running in the engine

Recommendation: Use an already mixed brand fuel which usually contains additional additives which are advantageous for the engine.
If you nevertheless want to mix the fuel yourself, you must use high-quality fuel components (synthetic oil, nitromethane, methanol).
Before the first startup, the engine needs an initial running-in phase. Thereby, very fine machining traces on rotating or jointly gliding components are smoothed. Special running-in fuel usually contains a smaller amount of nitromethane.
Carefully screw in the enclosed main throttle needle (needle with fuel intake) up to the limit stop; then open it by 2-3 turns. Turning out gives a richer mix, turning in a leaner mix. The initial running-in phase at low speed (with fully open choke tap and extremely rich mix) should average 2-4 tank fillings. After each engine running (tank filling), allow for a sufficient cooling phase.
Afterwards, the mix should be made leaner step by step by screwing in the main throttle needle and the model can already be used. The final running-in of the engine can, depending on the model, last several hours. After this phase, you can operate the engine with full power.

Important!
With a new engine, the carburettor setting must be adjusted, from the start, as rich as possible. It is only in the course of time that one can approximate the maximum engine power. Now you can also properly adjust the idle speed. A too rich carburettor setting prevents the engine from running at full power. However, a setting that is too lean is dangerous for the engine and, sooner or later, leads to an engine damage!

Troubleshooting

• Glow plug defective, replace it
• Glow plug does not glow properly; check the leads and start battery

Engine stops after a short running time or after having disconnected the start battery|

• Engine gets too much fuel (kicks back); check the car- burettor setting or unscrew the glow plug and let the engine race several times
• Engine gets too little fuel (does not start); check the carburettor setting
• Engine does not ingest any fuel; check the fuel setting and the filters for passage and tightness or check the carburettor setting

Power decreases after reaching operating temperature, the engine runs inconsistently|

• Glow plug defective, replace it
• Too high water proportion in the fuel; use brand fuel or keep the fuel canister closed
• Check the carburettor setting
• Carburettor, filter or fuel line dirty; clean them comple- tely
• Loose glow plug or cylinder head
• Fuel line bent/defective; replace the hose
• Engine becomes too hot; running-in phase is not carried out correctly
• Change the carburettor setting (use a richer mixture)
• Ensure sufficient cooling
• Engine is set too “sharp”; change the carburettor setting
• Glow plug defective or wrong glow plug value; use a different glow plug
• Keep the engine in a dry room with little humidity

Maintenance and service

• Always use a fuel filter between tank and engine.
• Always keep the fuel canister clean.
• Only use brand fuels and synthetic oils!
• Always empty the tank after operation of the model.
• In case that a foreign body penetrates the engine, disassemble the latter and rinse it generously with fuel. Afterwards, clean all parts with a non-corroding oil.
• Do not disassemble the engine unnecessarily.
• Check the engine for damages and wear when it has not been used for a longer period of time.
• Keep the engine in a dry room with little humidity.

Technical data

Displacement………………………….. 7,54 ccm
Power ……………………………………. 1,19 kW (1,62 PS) @ 16000 rpm
Engine speed………………………….. 2000 – 17000 rpm
Bore………………………………………. 22 mm
Stroke ……………………………………. 19,6 mm
Weight …………………………………… 461 g
Dimensions A x B…………………….. 44 x 17,50 mm
Dimensions C x D……………………. 74,60 x 84,75 mm

References

• Conrad Electronic » All parts of success
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