FarmBoy
®
Petrol Engine
– 4-Stroke
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Page 32 of 36
6.
Reinstall the spark plug cap.
The spark plug must be screwed up, or it may become
extremely hot and damage the gasoline engine.
Adjustment of Valve Clearance:
Each set of gasoline engine is strictly debugged and inspected by our company. Generally,
the engine can get into the normal operation without any adjustment. After it is used for a
period of time, you may adjust the gasoline engine based on the following steps:
It is suggested to adopt the standard valve clearance: Inlet valve clearance: 0.05~0.08mm;
exhaust valve clearance: 0.08~0.10mm.
a)
Hold the valve clearance adjusting bolt and loose the valve locknut.
b)
Turn the valve clearance adjusting bolt to the specified clearance.
c)
Hold the valve clearance adjusting bolt and screw up the valve locknut.
d)
Re-inspect the valve clearance after screwing up the valve locknut.
Maintenance before the Long-Term Shutdown
If the engine will not be used for a long period of time due to some reasons, one time of
maintenance of the engine must be carried out before its shutdown:
1.
Screw off the fuel tank cap and pour out the fuel in the fuel tank; actuate the
carburetor oil pump to discharge the fuel in the carburetor; then, screw up the fuel
tank cap.
2.
Screw off the oil rule and discharge the lubricating oil in the gasoline engine based
on operating methods
3.
Rotate the crankshaft to stop the piston of the gasoline engine at the position of
the top dead center, so as to prevent air from getting into the cylinder and rusting
the cylinder.
4.
Wipe off the oil stain and dust on the external surface with the clean cotton yarn
and remove the dirt between the cooling fins, so as to keep the gasoline clean.
After cleaning, put the gasoline engine at a clean, dry and ventilated place for
storage.
5.
Disposal of waste oil: Please store the waste oil in the gasoline engine with a
container and deliver it to the local waste oil treatment station for treatment, and
do not pour it anywhere.
