Loose Engine Parts
★Failure phenomenon:
serious air leakage and oil leakage
☆ Replacement standard:
Sturdy nut or gasket replacement method cannot be eliminated, serious oil leakage, replacement
▲ Three Guarantees Period: 12 months
★Failure phenomenon:
ablation
☆ Replacement standard:
valve is not closed tightly, replace
Three Guarantees: 6 months
★Failure phenomenon:
severe ablation
☆ Replacement standard:
Cause loose fit, spark plug hole screw sliding wire, valve wall ablation, replacement
Three Guarantees: 6 months
★Failure phenomenon:
broken
☆ Replacement standard:
no other results, replacement
Three Guarantees: 6 months
★Failure phenomenon:
fracture
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
6. Valve Rocker Arm
★Failure phenomenon:
fracture, severe wear
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
★Failure phenomenon:
bending, wear
☆ Replacement standard:
affect the normal operation of the engine, replace it
Three Guarantees: 6 months
8. Cylinder
★Failure phenomenon:
rupture, blisters, cylinder knocking
☆ Replacement standard:
Serious cracks make the cylinder body scrapped and replaced
Three Guarantees: 6 months
★Failure phenomenon:
Cracks, sand holes and plug oil leakage
☆ Replacement standard:
Obvious oil leakage, air leakage, affecting the normal use of the engine (including suspension), large crankcase bearing holes, replacement
▲ Three Guarantees Period: 12 months
10. Timing gear
★Failure phenomenon:
damage
☆ Replacement standard:
Broken teeth, severe wear or peeling of tooth surface, replacement
Three Guarantees: 6 months
11. Timing chain
★Failure phenomenon:
fracture, elongation, severe wear
☆ Replacement standard:
is obviously loose and elongated, affecting the normal use and replacement of the engine
Three Guarantees: 6 months
★Failure phenomenon:
cracks and sand holes
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
13. Piston
★Failure phenomenon:
1. Rupture
2. Falling
3. Top Burning
4. Stuck
5. Severe strain
☆ Replacement standard:
1. Break out and replace
2. Top rupture, replacement
3. The top is severely ablated and replaced
4. The piston is stuck in the cylinder due to poor lubrication or high temperature
5. Replacement
Three Guarantees: 6 months
14. Piston pin
★Failure phenomenon:
fracture and abrasion
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
15, piston ring
★Failure phenomenon:
1. Fracture
2. Elasticity
3. Severe wear
☆ Replacement standard:
1. Replacement
2. Cause obvious performance degradation and replacement
3. Replace the engine oil caused by serious wear and tear during the warranty period
Three Guarantees: 6 months
16. Connecting rod
★Failure phenomenon:
1. Fracture
2. Deformation
☆ Replacement standard:
1. The engine is not scrapped or replaced.
2. Replace visible bends or twists
▲ Three Guarantees Period: 12 months
17. Crankshaft
★Failure phenomenon:
1. Fracture
2. Ablation or death
3. Bending deformation
☆ Replacement standard:
1. The curved neck is bent and the outer crutch is broken without causing other consequences and replaced.
2. Replace the crankshaft with serious ablation or seizure
3. Obvious bending and deformation, resulting in scrapping and replacement of the main bearing.
▲ Three Guarantees Period: 12 months
18, Camshaft
★Failure phenomenon:
1. Severe wear
2. Ablation
3. Cam timing shift
☆ Replacement standard:
1. Serious wear and tear, replacement.
2. The surface is seriously ablated and replaced.
3. If the camshaft clearance is too small and stuck or too loose, replace it.
Three Guarantees: 6 months
19. Crank pin
★Failure phenomenon:
1. Severe wear
2. Ablation
☆ Replacement standard:
1. Severe wear and tear, unable to use normally, and replace the crankshaft assembly.
2. affect the normal use, replacement.
▲ Three Guarantees Period: 12 months
20. Crankshaft main bearing
★Failure phenomenon:
ablation, seizure, wear, displacement, fracture
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
21. Timing gear
★Failure phenomenon:
wear, breakage, displacement
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
22. Camshaft bearing
★Failure phenomenon:
severe wear
☆ Replacement standard:
serious wear, replace, abnormal noise, replace
Three Guarantees: 6 months
23. Camshaft gear
★Failure phenomenon:
1. Fracture
2. The tooth surface is severely worn or peeled off.
☆ Replacement standard:
1. Replacement
2. affect the normal use, replacement.
Three Guarantees: 6 months
24. Oil pump
★Failure phenomenon:
stuck, invalid.
☆ Replacement standard:
due to gear pump shaft seizure, replace.
Three Guarantees: 6 months
25. Magneto charging coil
★Failure phenomenon:
damage
☆ Replacement standard:
cannot generate electricity, replace it.
Three Guarantees: 6 months
26, magneto coil
★Failure phenomenon:
string, short circuit, open circuit.
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
27. Ignition coil
★Failure phenomenon:
damage, breakdown, leakage
☆ Replacement standard:
shutdown or power drop, replace
Three Guarantees: 6 months
28, CVT system
★Failure phenomenon:
failure
☆ Replacement standard:
the damaged parts cannot be cut off or the torque cannot be transferred.
Three Guarantees: 6 months
29. Clutch gear
★Failure phenomenon:
wear, broken teeth
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
30, variable speed drum
★Failure phenomenon:
wear
☆ Replacement standard:
due to shaft breakage, replace
▲ Three Guarantees Period: 12 months
31, shift shaft
★Failure phenomenon:
fracture
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
32, transmission gear
★Failure phenomenon:
wear
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
33. Shift fork
★Failure phenomenon:
wear
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
34. Main and countershafts and gears
★Failure phenomenon:
wear
☆ Replacement standard:
severe wear, peeling, broken teeth, replacement.
▲ Three Guarantees Period: 12 months
35, main and auxiliary shaft bearings
★Failure phenomenon:
damage
☆ Replacement standard:
Bearing damage or severe wear
▲ Three Guarantees Period: 12 months
36, start the motor
★Failure phenomenon:
open circuit, short circuit, inoperative.
☆ Replacement standard:
Replacement
Three Guarantees: 6 months
37, left crankcase cover
★Failure phenomenon:
screws
☆ Replacement standard:
Replacement
▲ Three Guarantees Period: 12 months
