Time of Service Items. Remove the spark plug: a In general, it should be carried on after the engine has cooled down; b If the spark plug is too tight to remove, spray some rust inhibiter on The spark plug washer and the thread part; after the inhibiter has soaked the washer and thread part, rotate the spark plug; c Clear up the filth and carbon accumulation on the spark plug with a steel brush or a blade; 9. The tire pressure is very important for the riding stability.
Specifications: Front Tire: kpa Rear Tire: kpa 2. If the air cleaner is clogged with dust, its performance will be severely decreased; even the engine damages will probably be caused. Inspection and Cleaning of Filters Paper Filter a Remove the filter from its housing; b Lightly tap the filter on an object to knock out the dust; c Replace the filter element if it is wrinkled or torn. Foam Filter Remove the filter out of its steel cage; Wash the filter in non-flammable cleaning solvent; Submerge the filter in oil and squeeze it to remove excess oil; Install the filter element back into the air box.
Make sure that the element is seated properly and no foreign material can pass by it The nuts and bolts become loose normally after use, please check for the looseness regularly. Check for any leak or seeping fuel; c Replace the petcock if there is any leakage. However, in extreme cold weather conditions, the vehicle may becomehard to start, so we advise some lighter viscous oil, such as 75 wt or the equivalent motorcycle transmission fluid.
Gear Oil Capacity. Remove the drain plug from the left side bottom of the engine, and drain out the left oil into an oil pan for disposal;. Remove the large cap on the left bottom of the engine, and remove the screen; c. Wash the screen with some cleaning solvent and reassemble it; make sure that the O-ring is still in good conditions; d. Screw back the large cap. Grease the chassis bushings and bearings with some grease quarterly to make sure that they can operate smoothly and enjoy an extended life; b.
Troubleshooting for Failure in Starting Carburetor Reason Analysis: After the tryout, the carburetor has been exposed in the air for a long period, so that a layer of mucous membrane has formed and blocked the main jet. Solvent: a. Check if there is any damage or leakage on the pressurized tube of oil cock; Pressurized Tube.
Clean the carburetor and readjust the idle speed according to the steps below: a Open the connecting tube between the air cleaner and carburetor. If the engine works well, assemble the connecting tube; otherwise, repeat the steps above several times. Readjust the idle speed if it is unstable. The measuring point is divided into three sectional planes in the axial direction: upper, middle, lower.
Measure every plane each time on the mutually perpendicular directions X, Y. The least measured dimension is the cylinder bore, the data measured at the most upper position is the largest diameter, and the data measured at the lower position is the smallest diameter.
At the same cross section, measure the difference of diameter between the two points mutually perpendicular, which is the circularity of the cylinder. In order to make the measuring point perpendicular with the bore axis of the cylinder, and to ensure the precision of the measurement, the bar of the gauge can be slightly swung in the direction of the gauge bar, and take the smallest reading number as the result.
In the situation without a dial gauge, a feeler gauge can be used to make the relativity measurement. Put a new piston into the cylinder, and use the feeler gauge to measure the gap between the piston skirt and the cylinder wall, and then figure out the abrasion loss of the cylinder.
If the circularity of the cylinder exceeds the limit, a cylinder-reboring machine should be used to re-bore the cylinder, and to enlarge its diameter by 0. If the wear is too severe and cannot be reworked, a new cylinder should be installed. Cylinder bore. If the free play is too much, the worn condition of the piston pin and pinhole of the piston must be inspected respectively. Service limit b.
Measure the external diameter of the piston pin. If the result is less than the service limit, it should be replaced. Service limit If the result is more than the service limit, it should be replaced. So it must be measured. First ring. Service limit. AT the same time, cover them on the piston and move forwards gradually until the piston rings fall into the ring groove.
Apply some oil on the piston pin to lubricate it. Cover a piece of cloth on the crankcase port to avoid the piston pin clip from dropping into the crankcase. The picture shows the structure and assembly relations of the crank connecting rod component. Starter Gear 5. Timing Chain 7. Crankcase Body, Left 9. Crankcase Paper Washer Crankcase Body, Right. When measuring, make one side of the connecting rod big end close to the crank, and insert the feeler gauge between the other side and crank, and get the correct end play.
If the crank jump is too much, it will cause the engine to shake abnormally, and shorten the life of the engine. So it must be examined carefully when inspecting. The right and left crankcase axle hole must be concentric, so generally they must be replaced at the same time. Pay attention to avoid the cam chain damaging the oil seal.
The o-ring must be mounted in the groove. This is a kind of overhead valve; its intake port, exhaust port, camshaft are all located in the cylinder head; the valve bottoms up over the combustion chamber. The four strokes: Intake stroke, Compression stroke, Expansion stroke, and Exhaust stroke. Make sure that the valve can closely tightened under any conditions, especially when the engine is overheated; there must be certain clearance kept when the valve is in the cold condition.
This clearance is called the valve clearance. When the engine is running, the valve clearance should be neither too big, nor too small. So the valve clearance adjustment is an important procedure in the valve maintenance. The crankshaft should co-rotate; otherwise the exhaust port may not be adjusted.
Sometimes when tightening the lock nuts, it will change the clearance. So it must be rechecked for the proper clearance. There are the air inlet cam, the exhaust cam, and the cam journal on the shaft. It controls the intake and exhaust valves to open and close at the correct time. The camshaft wear will affect the engine performance and cause excessive noise.
When the hole on the cam chain timing drive chain wheel is up, it is the top dead center position. If there is any play, replace the whole set; b Inspect the cam surface for damages; c Measure the height of the cam. Inlet Cam. This is responsible for the timing of the ignition system. Barely any voltage is required from the pickup. If your voltmeter reads 0. It stores energy provided by the stator, and releases that energy to the next step of the ignition system ignition coil when it senses voltage from the trigger pickup.
Ignition Coil The ignition coil accepts incoming voltage from the CDI box, and steps the voltage up thousands of times upwards of 27, volts. This high voltage is required to force the electrical energy to jump across the sparkplug gap. Chinese buggies are a strange animal. Lokalizacja: Topolina, Polska. Niedzielna wyprawa nad Narew i lekka wtopa w odnodze rzeki. Lokalizacja: Legionowo, Polska.
Saturday free-ride and climbing on to small hills. I got the clutch repaired, therefore I went for a small Saturday trip.. Subskrybuj: Posty Atom. The nuts and bolts become loose normally after use, please check for the looseness regularly. Remove the drain plug from the left side bottom of the engine, and drain out the left oil into an oil pan for disposal; Engine Troubleshooting for Failure in Starting Engine Cylinder bore The picture shows the structure and assembly relations of the crank connecting rod component.
The four strokes: Intake stroke, Compression stroke, Expansion stroke, and Exhaust stroke. So it must be rechecked for the proper clearance. Valve clearance 0. There are the air inlet cam, the exhaust cam, and the cam journal on the shaft. If there is any play, replace the whole set; The valve cover gasket must be mounted properly in the groove.
As for the adjustment of the cam chain tensioner, turning clockwise is tightening, and turning anticlockwise is loosening. While trimming, press the valve seat-grinding cutter to make the rotary motion with 40 - 50N force.
After the lubrication oil crosses the filter screen, it is pumped by the rotator oil pump; some of the oil goes into the big end of the connecting rod, and splashes on the cylinder wall and the small end of the connecting rod; Disassembling Replacing level 1. Oil Pump Inspection a Inspect the clearance between the oil pump body and outer rotator.
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