Zontes ZT125/310T-M User manual

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ZT125/310T-M
Maintenance Manual
2022-09-23

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Introduction
All the materials, illustrations, photos, etc. collected in this manual are compiled according to the latest products of ZT310-
M National IV. However, due to the continuous improvement of the product and other changes, there may be some
inconsistencies between your motorcycle and this manual. For colors or upgrades, please refer to the part codes on the official
website of Zontes. This manual will not be listed in detail; if the part names in this manual are inconsistent with the official
website of Zontes, please refer to the official website of Zontes.Individual parts of different displacements that differ in shape or
size but are disassembled and assembled in the same way, will not listed in this manual.
The M125 steps are similar to the M310, taking the M310 as an example.
If part of the content of this manual is insufficient, please refer to the "Driver's Manual" included with the bike. The latest
version of the driver's manual can be downloaded as a PDF in the model introduction corresponding to the official website of
Zontes.
©GUANG DONG TAYO MOTORCYCLE TECHNOLOGY Co.,Ltd
All rights reserved

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User notice
This manual is compiled by Guangdong Tayo Motorcycle Technology Co., Ltd. to guide dealers or service personnel to use it. This
manual cannot provide more detailed knowledge about motorcycles, and is only for reference for maintenance. If you do not
have the corresponding knowledge such as electrician, machine repair, etc., improper assembly or repair failure may occur
during repair.
If you need to clean or wash the body parts of the vehicle, you should use neutral car wash fluid or tap water, diesel, kerosene,
etc. Acidic or alkaline car wash liquid will cause irreversible corrosion of the surface paint, electroplating surface, and anodized
surface of the parts; gasoline will cause premature aging or hardening of sealants, gaskets, and rubber parts, reducing the
service life. Non-woven fabrics should be used for wiping with no residue. Ordinary rags may leave cloth scraps or wool, etc.,
which may affect the assembly or cause other adverse effects.
Our company will update this manual as soon as possible after the product changes.
The following is the meaning of the icons marked in this manual：
Failure to observe will cause personal injury or death of the driver or maintenance
personnel; or cause serious damage to parts and shorten the service life, etc.
Failure to comply may result in personal injury or death of the driver or maintenance
personnel; or damage to parts, abnormalities, etc.
Failure to observe the warning will cause personal injury to the driver or
maintenance personnel; or matters requiring special attention during disassembly
and assembly
Indicates that there is a requirement for torque there
Indicates that the piece needs to be replaced after disassembly

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Content
Content ............................................................................................................................................................................................... 4
1. Vehicle information ...................................................................................................................................................................... 12
Know Before Service ......................................................................................................................................................... 12
Body label ................................................................................................................................................................................. 13
M310 Technical specification.................................................................................................................................................... 14
Front wheel/steering system ............................................................................................................................................ 14
Rear wheel/suspension system ........................................................................................................................................ 14
Brake system..................................................................................................................................................................... 14
Battery/charging system ................................................................................................................................................... 15
M125 Technical specification.................................................................................................................................................... 15
Front wheel/steering system ............................................................................................................................................ 15
Rear wheel/suspension system ........................................................................................................................................ 16
Brake system..................................................................................................................................................................... 16
Battery/charging system ................................................................................................................................................... 16
Lamp/Speedometer/switch description ................................................................................................................................... 17
Tightening torque ..................................................................................................................................................................... 17
Bolt tightening torque of general tightening part............................................................................................................. 17
Cable/cable/pipe/electrical device distribution map ............................................................................................................... 18
1. Distribution map of lamps and lanterns ....................................................................................................................... 18
2. Throttle cable ................................................................................................................................................................ 18
3. Brake upper pump and brake hose............................................................................................................................... 19
4. Calipers, brake hoses and wheel speed sensors ........................................................................................................... 19
5. Distribution map of brake system accessories.............................................................................................................. 20
5.1 M310 ................................................................................................................................................................... 20
5.2 M125 ................................................................................................................................................................... 21
6. Oil supply system .......................................................................................................................................................... 22
6.1 M310 Fuel evaporation ....................................................................................................................................... 22
6.2 M125 Fuel evaporation ....................................................................................................................................... 23
6.3 M310 Fuel supply ................................................................................................................................................ 23
6.4 M125 Fuel supply ................................................................................................................................................ 24
7. Distribution map of cooling system accessories ........................................................................................................... 24
7.1 M310 ................................................................................................................................................................... 24
7.2 M125 ................................................................................................................................................................... 25
8. Electrical device layout.................................................................................................................................................. 26
9. Intake and exhaust system............................................................................................................................................ 28
9.1 M310 ................................................................................................................................................................... 28
9.2 M125 ................................................................................................................................................................... 29
Tool ........................................................................................................................................................................................... 30
Swell nail description ................................................................................................................................................................ 32
2. Maintenance ................................................................................................................................................................................. 33
Know Before Service ................................................................................................................................................................. 33
M310 Maintenance schedule ................................................................................................................................................... 34
M125 Maintenance schedule ................................................................................................................................................... 35
M310 Air filter (filter element), air inlet filter element ............................................................................................................ 36
1. Support the vehicle firmly............................................................................................................................................. 36
2. Remove the left engine cover ....................................................................................................................................... 36
3. Remove the air inlet cover ............................................................................................................................................ 36
4. Replace the air inlet filter.............................................................................................................................................. 37
5. Remove the air filter housing........................................................................................................................................ 37
6. Replace Air filter element ............................................................................................................................................. 37
7. Inspection air filter waste oil pipe................................................................................................................................. 37
8. Reinstall......................................................................................................................................................................... 38
M125 Air filter (filter element), air inlet filter element ............................................................................................................ 39
1. Support the vehicle firmly............................................................................................................................................. 39
2. Remove the left engine cover ....................................................................................................................................... 39
3. Replace the air inlet filter.............................................................................................................................................. 39
4. Remove the air filter housing........................................................................................................................................ 40
5. Replace Air filter element ............................................................................................................................................. 40

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6. Inspection air filter waste oil pipe................................................................................................................................. 40
7. Reinstall......................................................................................................................................................................... 40
Bolts and nuts of muffler .......................................................................................................................................................... 41
1. Check for air leaks at the engine exhaust. .................................................................................................................... 41
2. Check for nut and bolts at the muffler.......................................................................................................................... 41
M310 Spark plug ....................................................................................................................................................................... 42
1. Disassemble the spark plug........................................................................................................................................... 42
2. Check the spark plug ..................................................................................................................................................... 43
3. Refer to the steps to remove the spark plug to restore all parts.................................................................................. 43
M125 Spark plug ....................................................................................................................................................................... 44
1. Disassemble the spark plug........................................................................................................................................... 44
2. Check the spark plug ..................................................................................................................................................... 45
3. Refer to the steps to remove the spark plug to restore all parts.................................................................................. 45
Engine oil................................................................................................................................................................................... 45
M310 ................................................................................................................................................................................. 46
1. Drain the oil........................................................................................................................................................... 46
2. Replace fine filter .................................................................................................................................................. 46
3. Add oil ................................................................................................................................................................... 46
4. Change gear box oil............................................................................................................................................... 47
5. Confirm the oil level .............................................................................................................................................. 47
M125 ................................................................................................................................................................................. 47
1. Drain the oil........................................................................................................................................................... 47
2. Replace fine filter .................................................................................................................................................. 48
3. Add oil ................................................................................................................................................................... 48
4. Change gear box oil............................................................................................................................................... 49
5. Confirm the oil level .............................................................................................................................................. 49
M310 Throttle valve body......................................................................................................................................................... 49
1. Do not dismantle the throttle body to clean up carbon deposits................................................................................. 49
2. Remove the stepper motor and clean up carbon deposits........................................................................................... 49
3. Remove the throttle valve body assembly to clean up carbon deposits ...................................................................... 51
4. Disassemble the three-in-one sensor ........................................................................................................................... 52
5. Throttle valve body troubleshooting process ............................................................................................................... 53
M125 Throttle valve body......................................................................................................................................................... 53
1. Do not dismantle the throttle body to clean up carbon deposits................................................................................. 53
2. Remove the stepper motor and clean up carbon deposits........................................................................................... 53
3. Remove the throttle valve body assembly to clean up carbon deposits ...................................................................... 54
4. Disassemble the sensor................................................................................................................................................. 55
5. Throttle valve body troubleshooting process ............................................................................................................... 55
Throttle cable............................................................................................................................................................................ 56
1. Inspection...................................................................................................................................................................... 56
2. Adjust the throttle cable clearance............................................................................................................................... 56
3. Lube door cable............................................................................................................................................................. 56
Idle speed.................................................................................................................................................................................. 57
Check idle speed: .............................................................................................................................................................. 57
Fuel evaporative pollutant control system ............................................................................................................................... 58
M310 fuel evaporation ..................................................................................................................................................... 58
M125 fuel evaporation ..................................................................................................................................................... 58
Radiator..................................................................................................................................................................................... 59
1. M125/310 check the coolant ........................................................................................................................................ 59
2. M125/310 add coolant (antifreeze) to the Coolant expansion tank............................................................................. 59
3. M310 add coolant to the Radiator................................................................................................................................ 60
4. Put coolant .................................................................................................................................................................... 60
M310 ......................................................................................................................................................................... 60
M125 ......................................................................................................................................................................... 60
5. Check whether the fins of the radiator water tank are deformed or the air duct is blocked....................................... 61
M310 ......................................................................................................................................................................... 61
M125 ......................................................................................................................................................................... 61
6. Check all water pipes for leaks; aging. .......................................................................................................................... 62
M310 ......................................................................................................................................................................... 62
M125 ......................................................................................................................................................................... 63
Fuel pipe.................................................................................................................................................................................... 64