XY400-C Maintenance Manual
Lubrication system
14
Troubleshooting
●
Lubricating oil contaminated
1. Fail to replace lubricating oil according to the
maintenance period table;
2. The pouring orifice thread is damaged thus causing
poor seal;
3. The piston ring is worn.
●
Lubricating oil pressure low
1. The oil level is too low;
2. Oil through, orifice port or oil strainer is clogged;
3.
Oil pumps failure.
●
Lubricating oil consumes too fast
1.
There is leakage with the engine;
2.
The piston ring is worn.
3.
The inlet/exhaust valve guide is worn;
4.
The oil shield is worn or damaged.
Lubricating Position of Complete Vehicle
Among the positions shown in the above diagram, besides applying dedicated lubricating oil for chain
to
the driving chain, apply lithium base grease to all other positions.
All lubricating oils not specified for use in this manual shall be ordinary common lubricating oil.
All sliding surfaces and cables not shown in this diagram shall be coated with lubricating oil or lubricating grease.
Lubrication of Control Lines
Regular lubrication shall be carried out to the clutch control line, throttle control line and steering cable. To do this, remove
the upper joining parts of all control lines, sufficiently lubricate and maintain their hoisting cables and all points of support
with lithium base grease
.
Front wheel bearing
Rear wheel bearing
Engine lower hanging bolt
Rear fork shaft lever
Side stand shaft
Driving chain
Upper/lower retainers of vertical pipe
