BAFANG H400 User manual

1
DEALER MANUAL FOR MOTOR
BF-DM-C-FM G311-D-EN November 2019
6.1 Introduction 
6.2 Specifications 3
6.2.1 Outline and geometric size 3
6.2.2 Surface 3
6.2.3 Storage Information 3
6.3 Drive Unit Installation 4
6.3.1 List of Tools to be used 4
6.3.2 Motor Installation 4
6.4 Maintenance 5
CONTENT
6 DEALER MANUAL FOR H400
(FM G311.250.D)

2BF-DM-C-FM G311-D-EN November 2019
6.1 INTRODUCTION
•Product Model
FM G311.250.D
•Scope
Applies only to electrically powered pedelecs
developed or licensed by Bafang. It is suitable
for city and trekking bikes, which have been
developed for road use. The engine is not
suitable for sport competitions.
•Identification
The following graphic, is the identification
numbers of the product, which are shown on
the housing:
Note: Content in the label is important informa-
tion about this product. Please do not remove
the information from the motor.

3
DEALER MANUAL FOR MOTOR
BF-DM-C-FM G311-D-EN November 2019
6.2 SPECIFICATIONS
Motor model: FM G311.250.D
Rated power (W) 250
Rated voltage (V) 36 / 43
Waterproof IP65
Certification CE-EMC
Outdoor Temperatures -20℃~45℃
6.2.1 Outline and geometric size
OLD: 100mm
Shaft length: 142mm
Motor cable length: L=250mm (Optional)
6.2.2 Surface
Shockproof black and silver coating
6.2.3 Storage Information
The pedelec should be stored in a ventilated dry room. Avoid storing the pedelec near strong magnetic
objects.

4BF-DM-C-FM G311-D-EN November 2019
6.3 DRIVE UNIT INSTALLATION
6.3.1 List of Tools to be used
Use of the Tools Tools
To fasten BC3/8 cap lock-nuts Open-end wrench
To fasten the screws on disk brake Internal hexagonal wrench
6.3.2 Motor Installation
1. First place the disc brake on to non-cable
side of the motor and tighten with six
M5*8 screws. insert the stop pin on to the
shaft.
2. Insert the motor into the frame.
3. Mount one 2mm washer on both sides of
the frame.
4. Fasten clockwise BC3/8 cap lock-nuts with
open-end wrench at both ends of the mo-
tor. Torque requirement: 30-36N.m.

5
DEALER MANUAL FOR MOTOR
BF-DM-C-FM G311-D-EN November 2019
6.4 MAINTENANCE
• Maintenance must be carried out by autho-
rized personnel with the correct equipment.
• Do not disassemble the motor.
• Do not use thinners or other solvents to
clean the components. Such substances can
damage the surfaces.
• Avoid water submerging, to keep the com-
ponents protected.
• Avoid using high-pressure cleaning jets.
• For prolonged storage, turn off the battery
and avoid storing near heat sources.

6BF-DM-C-FM G311-D-EN November 2019