Whatever scooter you have, a breakdown can occur with it due to the fault of the manufacturer, the driver himself, or due to bad roads. Or you may have purchased a scooter that won't start, or you may have just been using it for too long. If you do not have a special desire to pay money for repairs or the reason for the breakdown of the scooter is insignificant, then you can try to repair it yourself.
Necessary
- - specialized keys (candlestick, cap, open-end);
- - screwdrivers (Phillips, flat);
- - pullers, compressometer and other tools as needed.
Instructions
Step 1
Before you start repairing a scooter, you should diagnose it. The basic principle of troubleshooting is as follows: you need to step by step eliminate various factors (system elements) in order to determine the cause of a malfunction in any of them. Therefore, diagnose in a strict sequence, from the beginning of the chain to the end. For example, if there is no spark, you do not need to immediately change the switch: first make sure that you have a working generator, then test the wiring, etc.
Step 2
In fact, there can be quite a few of these reasons, but they all fall into several categories: problems with the ignition, the fuel system, or with the CPG (central piston group). If the compression, spark and fuel are all right, the scooter should start. If the system does not work, however, all these 3 categories are normal, then this means that some element is missing.
Step 3
It should be remembered that the normal operation of the engine is directly related to the normal operation of the clutch, variator, as well as the group of valves and camshaft. In other words, with properly functioning ignition, power and CPG systems, the problem may appear, for example, in the transmission, since the crankshaft torque is transmitted directly to the variator.
Step 4
When it comes to checking the fuel system, first check the quality of the gasoline. Perhaps your scooter has been in use for a long time (a couple of months or more). This time is enough for the gasoline to lose its octane number and not be able to ignite. To fix this problem, drain the gasoline from the fuel tank and fill up with a new one. Also, check the carburetor, tank and fuel filter for clogging. Check if the fuel valve and pipes leading to it are intact.
Step 5
Checking the ignition may be sufficient to check for a spark, but be aware that a spark may not be sufficient to ignite due to damage to the coil or wiring. In general, when checking the performance of the ignition, it is necessary to take into account all the links of this chain (generator, switch, wiring, coil).
Step 6
You can check the compression using a compression gauge. The indicator of the normal value should be at least eight, if not, then this indicates that there are problems with the wear of the central piston group. The reasons for the wear of the CPG can be different - for example, an unimpregnated (or completely absent) air filter passes a lot of sand and dust particles into the combustion chamber. Incorrect (aggressive) scooter operation can lead to heat sticking and wedging. Too much mileage can lead to depletion of the cylinder walls, which is why the CPG needs to be repaired.
