Engine Maintenance:
To reduce the fuel consumption, extend engine’s life, please adjust the engine’s highest speed and make engine run in
the output maximum speed of 90% once the gas pedal full opened. If the load is large ( Propeller’s diameter and screw
pitch are big ), the fuel must be adequate. If the load is small, the speed will be high while the fuel consumption will be
less; Please make sure to empty the carburetor after each flight, otherwise it’ll cause the rubber of carburetor aging to
affect the engine performance; Please clean the carbon deposition on the spark plug and keep the gap from 0.7mm to
0.8mm between the electrodes; If it’s difficult to start the engine, idle speed unstable or when high speed operation
flameout, please replace the spark plugs; Please clean the engine surface after used each time, it can make the engine
get better cooling; The carburetor may be blocked seriously if you use different brands or types of lubricating oil
together, you need select a better fuel filter; If the engine low speed work for a long time, can lead to spark plug carbon
deposition; Regularly check the fuel system, make sure do not leak fuel, do not leak air.
Engine Guarantee:
If the NGH engine has performance defects caused by the defects of process, material and manufacturing, we certify
that: Change for free within one year and Guarantee within two years since the date you purchased. Please note the
guarantee is only for the original purchaser, not including: Normal wear for engine; damage caused by the failure of
maintenance; damage for engine over speed operation caused by using small propeller; Bearing rust; Crash; Use
inappropriate fuel; Damage caused by foreign bodies; Damage caused by unreasonable installation or operating
environment; Damage caused by improper dismantle; Damage caused by any modification.
Web: www.nghengine.com
E-mail: ngh@ncdmoly.com
Skype: blue-sky-tan
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