TGB BF8, Руководство по обслуживанию

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3-2 RELEASE THE ENGINE
-Disconnect the terminals of the battery.
-Disconnect the electric terminals of the various components.
-Disconnect the fuel feed pipe and the vacuum cock control pipe.
-Disconnect the throttle valve control wire of carburettor.
-Release the rear brake cable.
-Release the shock absorber.
-Remove the engine mounting shaft screw.
3-3 INSTALLATION OF THE ENGINE
-Assemble the engine on the chassis by following the steps described for its disassembly in
reverse order.
-Inspect the engine lubricate oil with the oil level indicated.
-Check the operation of the carburetor and accelerator.
-Adjust the rear brake.
3-4 CHECK THE ENGINE PARTS
3-4-1 Air Cleaner
-Remove the seven fixing screw of the air-cleaner cover.
-Inspect the filter is keep clean or not.
-Change a new filter, if it is badly dirty or broken.
3-4-2 Spark Plug
-Unscrew the spark plug with specified tool.
-Examine the spark plug does any dirty, deposit carbon or burn out
？
-Clean the spark plug if has dirty or deposit carbon with steel brush.
-Measure the clearance of the spark gap.
-The gap standard is 0.6-0.7 mm
3-4-3 Cylinder head and Timing
-Remove the fan cover, cooling fan and shroud set.
-Release the cylinder head cover bolt, remove the cylinder head cover.
-Turn the flywheel with clockwise direction, let the “T” mark on the flywheel point to the rib
mark on crankcase. Then, the circle hole mark on the cam shaft gear will be upward
position. Such position, the engine at top dead point position.
-Remove the nuts and washers of the camshaft holder.
-Remove the camshaft holder and dowel pins
-Disassembly the chain gear and take the camshaft off.
-Inspect the cam surface and the bearing.
-If cam surfaces are serious abrasived and the bearings are damaged replaced with a new
one.