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848-ES5-93A0 (812) OWNER’S SERVICE MANUAL MODEL: G260PU-EI – for radio control Airplane WARNING • These engines are designed for radio controlled products. • When replacing parts, use only parts which have been certified by Zenoah. • Zenoah assumes that no responsibility for these engines that are modified or used for any other applications.
1. Safety Precautions • This manual describes the engine. For its mounting and control, see the instruction manual for the model airplane. • Engine is designed for use on model airplane. If it is used for any other purpose, we cannot be responsible for its reliability, safety and any laws/regulations in the countries.
2. Engine Assembling The carburetor, muffler, air-funnel and sensor are not assembled at factory. Make sure that the assembling for such parts are done according to the 2.1 and 2.2. Carburetor muffler and air-funnel assembling Fig.1 1. Bolt (01252-30550) 2. Muffler (T2075-15110) 3.
3. Engine Mounting Make sure that the G260PU-EI is mounted on the aircraft grade plywood with more than 8mm of thickness or a mount of equivalent strength and is firmly fixed with 4 bolts. If necessary, please reinforce the firewall and the around.
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Fig.6 Gap: 5mm or surface D more surface D surface D Sponge & cloth surface D Switch Fig.7 Capacity: 3A (or higher) Sensor wire (not supplied) Bolt (4mm) Unit Battery wire For charging surface D Ground wire Use of anything Sensor Battery 4.8V other than an 4.8V...
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6. Fuel • Mix gasoline (octane over 85 / premium gasoline) and high grade 2 cycle engine oil (mixing use type; F3C grade or ISO EGC grade) at mixing ratio 25~40:1. • The mixing ratio may be decided according to the oil recommendation. [ NOTE ] 1) Never use any alcohol fuel or alcohol added fuel, or the rubber parts in the carburetor.
8. Carburetor Adjustment The carburetor is provided with 3 adjust screws which are set to the best (approximately) positions by our company, but they may need a little adjustment depending on the temperature, atmospheric pressure (altitude), etc. of the area where the engine is used.
9. Engine Break-In No specific break-in is required. The engine is gradually broken-in as it is used and the output is also gradually increased. For checking the whole conditions of the airplane, it may be better to operate the engine at slow RPM for 1/3 tank and mid-high RPM for 2/3 tank. 10.
2) SPECIFICATIONS & TECHNICAL DATA Items unit Specifications Type — Air Cooled Bore x Stroke 34x28 Displacement 25.4 Effective Compression Ratio Type (Walbro) WT-645 Carburetor Venturi (mm) ø12.7 Air Cleaner — Starting — Electric Motor Ignition Type Battery Ignition Spark Plug Idle Speed 1800 (APC 18x8) Max.
12. Special Tools Part Name Part No. External Appearance Usage Puller Assy 1490-96101 To remove rotor. To hold crankshaft when Piston Stopper 4810-96220 disassembling/assembling the rotor. Rod Assy 1101-96220 To remove/install piston pin. For socket screw of Hex Wrench 3304-97611 4mm, 5mm and 6mm.
3 months after purchased by user subject to 12 months from produced month. 5) EXEMPT FROM WARRANTY ZENOAH shall not warrant this engine even if the fault has been caused during the period of terms of warranty, in case of that ;...
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Parts list Q'TY/ Key# Part Number Description UNIT Remarks 848ES512A0 CYLINDER T2075-13120 GASKET, cylinder 3310-12281 BOLT M5x20 T2075-13150 GASKET, insulator 1148-13162 INSULATOR T2075-14120 GASKET, carburetor T2075-21100 CRANKCASE COMP. – • CRANKCASE (R) – • CRANKCASE (F) 2629-21130 • PIN T2075-21140 GASKET 2169-21210 SEAL 12x22x7...
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Parts list Q'TY/ CARBURETOR INNER PARTS Key# Part Number Description UNIT T2075-81000 CARBURETOR ASSY 3306-81380 • SCREEN 3080-81120 • COVER 3310-81130 • SCREW 3304-81140 • GASKET 1172-81150 • DIAPHRAGM 2850-81290 • GASKET 3310-81260 • DIAPHRAGM 3310-81280 METERING COVER 2867-81270 • SPRING 3356-81310 •...
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Head Office : 1-9 Minamidai, Kawagoe-city, Saitama, 350-1165 Japan Phone: (+81)49-243-1115 Fax: (+81)49-243-7197 本社:〒350-1165 埼玉県川越市南台 1-9...
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