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NGH GF38cc 4‐stroke Gasoline Engine Instruction
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1. Grutter Import B V KvK 09222149 Regenboog 213 BTW NL8224 56 862 B01 6661 PP Elst ING 4950145 p la nes The Netherlands BIC INGBNL2A ges gpa wigs mob 31 0 643253657 IBAN NL1 5INGB0004950145 www bigplanes nl info bigplanes nl NGH GF38cc 4 stroke Gasoline Engine Instruction Dear customers Thank you for purchasing new NGH GF38cc 4 stroke gasoline engine please read this instruction carefully before your operation Specifications Type 4 stroke Air cooled Gasoline Engine for Model Airplane Use Only Displacement 37 97cc Bore Stroke mm 39 31 8 Compression ratio 9 Carburetor Walbro custom WT1022 RPM range 1800 8000rpm Spark plug type CM 6 Break in fuel oil ratio 25 1 General use fuel oil ratio 35 1 Recommended propellers 18 10 19 8 19 10 20 8 Weight 1310g Safety WARNINGS 1 This engine isn t a toy Misusing can cause serious injury 2 This engine can cause severe harm to you and or others if misused or there safety cautions and warnings are not observed NGH and dealers aren t responsible for any loss injury or damages resulting from the miss use of RC model engines Keep away from the rotating propeller area while operating the engine 4 Before every use check engine assembly propeller and airframe carefully for loose screws and nuts 5 Turn off the engine before making any adjustments 6 Always check propeller nut tightening n Carburetor 1 This engine uses a Walbro
2. custom WT1022 with a remade arm 2 Same adjustments as usual Grutter Import B V KvK 09222149 Regenboog 213 BTW NL8224 56 862 B01 6661 PP Elst ING 4950145 The Netherlands BIC INGBNL2A mob 31 0 643253657 IBAN NL1 5INGBO004950145 www bigplanes nl info bigplanes nl Lubricating 1 2 3 There are two nipples on Intake manifold One pressurizes to carburetor from crankcase and one is for lubrication from carburetor to crankcase There are two nipples on rear cover Connect the nipples with fuel tubing separately Can be connected in any order Break in procedure This engine still uses a high precision sleeve liner so a lengthy break in period is not necessary however it is beneficial to follow the bench break in process below OO e w a All NGH engines are tested before shipment lubricated and packed well For break in use 2 cycle oil at a ratio of 25 1 and general use with 35 1 Break in RPM is 3000RPM Break in time is 30 minutes Break in is best performed without a using a muffler however if noise is an issue you can use the stock muffler After 10 minutes of break in de mount the rear crankcase cover and lubricate the bearings Continue the break in and repeat step 7 after 30min Very important 1 2 3 Must connect lubricating nipples in any order with fuel tubing between rear cover and intake manifold Insufficient lubricating will damage the engine Must use 2 cycle oil for
3. lubricating do not use 4 cycle oil Valve gap is at 0 03 to 0 08mm Please contact your dealer or distributor with any questions Happy Flying NGH ENGINES COMPANY Distributed by BigPlanes nl
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