Table of Contents
Advertisement
OWNER'S SERVICE MANUAL
MODEL:
G231PUM – for radio control Boat
G231PUH – for radio control Helicopter
G260PU
G260PUM – for radio control Boat
G260PUH – for radio control Helicopter
G290PUM – for radio control Boat
[G260PU]
[G231PUM]
[G260PUM]
[G290PUM]
[G231PUH]
[G260PUH]
– for radio control Airplane
115 50 57-26 (206)
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.
• Purchaser has all
responsibilities against any
laws and regulations
existing in the country,
Zenoah is exempt from
such laws and regulations.
• Read and completely
understand this OWNER'S
SERVICE MANUAL before
operating these engines.
Advertisement
Table of Contents
Related Manuals for Zenoah G231PUM
Summary of Contents for Zenoah G231PUM
- Page 1 115 50 57-26 (206) OWNER’S SERVICE MANUAL MODEL: G231PUM – for radio control Boat G231PUH – for radio control Helicopter G260PU – for radio control Airplane G260PUM – for radio control Boat G260PUH – for radio control Helicopter G290PUM – for radio control Boat WARNING •...
-
Page 2: Safety Precautions
1. Safety Precautions • This manual describes the engine. For its mounting and control, see the instruction manual for the model airplane, helicopter and boat. • Each engine is designed for use on each model airplane, helicopter and boat. If it is used for any other purpose, we cannot be responsible for its reliability, safety and any laws/regulations in the countries. -
Page 3: Engine Assembling
2. Engine Assembling The carburetor, muffler and air-funnel (air-cleaner) are not assembled at factory. Make sure that the assembling for such parts are done according to the Fig.1. Fig.1 1. Bolt (01252-30550) 2. Muffler (T2075-15110) 3. Gasket (1140-13141) 4. Screw (0263-30408) 5. -
Page 4: Engine Mounting
10~15kg (80~120kg·cm) G231PUM/G231PUH/G260PUM/G260PUH/G290PUM Make sure that the engine for boat or helicopter is mounted according to the instruction manual to be provided by boat or helicopter manufacturer. In case such instruction manual is not available, make sure that engine is mounted by at least 4 points at engine's PTO side and recoil starter side. - Page 5 4. Propeller, Rotor & Screw Propeller Propeller for airplane The recommended prop sizes are as shown in the table bellow. Diameter x Pitch ( in.) 18 x 6 ~ 10, 16 x 8 ~ 12 Be sure to use a propeller which makes the engine speed approximately 7,000~8,500 rpm while the airplane is flying.
- Page 6 5. Fuel • Mix gasoline (octane over 90) and high grade 2 cycle engine oil (mixing use type; JASO: FC grade or ISO: EGC grade) at mixing ratio 25~40:1. • The mixing ratio is according to the oil recommendation. [ NOTE ] 1) Gasoline may contain maximum of 10% Ethanol (grain alcohol) or up to 15% MTBE (Methyl tertiary-butyl ether).
- Page 7 ● How to Start a. Fill the fuel tank with the fuel. b. Choke the carburetor and turn the propeller a few times until the fuel appears at the carburetor. c. Set the throttle valve at the idle position or at the position slightly open from the idle position.
-
Page 8: How To Stop The Engine
G231PUM/G231PUH/G260PUM/G260PUH/G290PUM a. Fill the fuel tank with the fuel. b. Push the priming bulb upper the carburetor until fuel appears in the priming bulb. c. Choke the engine and open the throttle valve approximately 1/4~1/3 of the full open position. -
Page 9: Carburetor Adjustment
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. -
Page 10: Engine Break-In
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, boat and helicopter, it may be better to operate the engine at slow RPM for 1/3 tank and mid-high RPM for 2/3 tank. 10. -
Page 11: Specifications & Technical Data
2) SPECIFICATIONS & TECHNICAL DATA Items unit G231PUM G231PUH G260PU G260PUM G260PUH G290PUM Type — Water Cooled Air Cooled Air Cooled Water Cooled Air Cooled Water Cooled ← ← ← Bore x Stroke 32x28 34x28 36x28 ← ← ← Displacement 22.5... -
Page 12: Ignition System
4) CARBURETOR Items Unit Standard Measuring Device Metering Lever set 1.65 ± 0.16 Vanier 0.13~0.23 Inlet Valve Opening Pressure Leak Tester kg/cm 1.3~2.3 0.07~0.17 Inlet Valve Closing Pressure Leak Tester kg/cm 0.7~1.7 5) IGNITION SYSTEM Items Standard Limit Measuring Device Remarks Spark Plug Air Gap (mm) 0.6~0.7... -
Page 13: Special Tools
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. -
Page 14: Service Guide
13. Service Guide 1. REMOVING ROTOR Fig.6 1) Remove the spark plug, fit the piston stopper (P/N: 4810-96220) into the cylinder. 2) Remove the rotor nut (13mm Hex) by (ratchet) spanner. (Fig.6) 3) Remove the rotor using puller assy (P/N: 1490-96101). -
Page 15: Troubleshooting
14. Trouble Shooting 1) ENGINE DOES NOT START Description Cause Countermeasure No spark in the spark plug Spark Plug 1. Wet spark, plug electrodes Make them dry 2. Carbon deposited on the electrodes Cleaning 3. Insulation failure by insulator damage Exchange 4. -
Page 16: Parts List
15. Parts list... - Page 17 Q'TY/UNIT Key# Part Number Description G231PUM G231PUH G260PU G260PUM G260PUH G290PUM Remarks T2075-12110 CYLINDER – – – – T2077-12110 CYLINDER – – – – – T2076-12110 CYLINDER – – – – – T2078-12110 CYLINDER – – – – – 577 91 65-01 CYLINDER –...
- Page 18 Q'TY/UNIT Key# Part Number Description G231PUM G231PUH G260PU G260PUM G260PUH G290PUM Remarks 60-3 T2077-81000 CARBURETOR ASSY WT-643 – – – – 1152-43260 – – – – – 1152-43281 STUD – – – – – 1152-43290 WASHER – – – –...
- Page 19 • PLUG, welch 3304-81441 • RING 3310-81230 • LEVER 3360-81440 • PLUG 3310-81240 • SCREW 3310-81250 • PIN 2630-81330 • SCREW G231PUM/G260PUM/G290PUM 3350-81380 • SPRING T2076-81000 CARBURETOR-A 1172-81370 • SHAFT, throttle 3306-81380 • SCREEN 2670-81410 • SPRING 3080-81120 • COVER 2880-81470 •...
-
Page 20: Warranty Terms
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 that. 1. Any faults, failures caused from neglect of proper operation and maintenance described in OWNER’S MANUAL.