C.T.M. HS-850 User manual

Service Manual- CTM HS-850
2
Content
General Information...........................................................................................................................................3
Check List for maintenance................................................................................................................................4
Trouble Shooting................................................................................................................................................5
Disassembly........................................................................................................................................................7
Maintenance ....................................................................................................................................................13

Service Manual- CTM HS-850
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General Information
1-1 Introduction,
This service manual only contains basic technical information about the common disassembly and
replacement to enable dealers to provide good after service. Your scooter feature and related parts
might different from this service manual, which is based on different demand in various markets. If you
need more product information or technical support, please contact with CTM, we will provide more
detailed information.
1-2 The Manufacturer,
The scooter is designed and manufactured by
Chien Ti Enterprise Co., Ltd.
No. 13, Lane 227, Fu Ying Rd., Hsin Chuang District, New Taipei City, Taiwan
Tel : [phone]
Email: [email protected]om.tw
Web. www.chienti.com.tw
1-3 Information of European Representative
Emergo Europe
Prinsessegracht 20
2514 AP The Hague
The Netherlands
1-4 Warranty Policy
Please refer to CTM warranty policy.
1-5 Service life
We estimate a service life of five years for this product, provided it is used in strict accordance with the
intended use as set out in this document and all maintenance and service requirements are met. The
estimated service can be exceeded if the product is carefully used and properly maintained, and
provided technical and scientific advances do not result in technical limitations. The service life can also
be considerably reduced by extreme or incorrect usage. The fact that we estimate a service life for this
product does not constitute an additional warranty.

Service Manual- CTM HS-850
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Check List for maintenance
Check Point
Inspection
Remark
N-D lever
Check for the correct function
Horn
Check for correct function
Throttles
Pull the wigwag to test the scooter movement
Electro-mechanical
brake and emergency
hand brake
Pull the wigwag a little bit and release it to test if brake
works. If your scooter comes with emergency handbrake,
please check it as well.
Battery Gauge
Check if the battery gauge is displayed and whether it is at
low power.
Rear mirror(s)
Check if the parts are clean and firmly tighten to the scooter
and do not wobble
-Clean up the dirt and tighten the screw or clamping
stem that holds the mirror(s)
Lighting
Check if all lights, such as head lights, rear lights, and turn
signal are functioning correctly.
Speed Dial Knob
Check for correct function
Armrests
Seat / Upholstery
Check if the parts are clean and firmly tighten to the scooter
and do not wobble. Tighten the screw knob that holds the
armrest.
Check for movement and if it’s worn
Wheels/Tires
Inflate the tire to the correct pressure and check that
1. Drive wheels rotate without wobbling.
2. Tire tread depth is not less than 0.5mm.
3. No foreign objects in tires.
Motor
Check for correct function
Battery Charger
Check if the charger is functioning correctly and the
batteries are charged.
Electronics
Check if all the battery cables and connectors are firmly
tighten to the scooter

Service Manual- CTM HS-850
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Trouble Shooting
3-1 Scooter won’t move when key in turned on,
Check Point
Solution
Check if the power is off
Turn the power on.
Check if the N-D lever is in Neutral position
Switch to D (drive) position. Turn off the power and
turn on again.
Check if the battery power is enough. (Battery
gauge is under 25%)
Recharge the battery and then retest.
Check if the charger power cord is still plugged in
scooter
Unplug the charger power cord.
3-2 Error Code
Flash
Description
Initial Check Points
1
Battery low
The batteries are running low.
-Recharge the batteries
2
Low battery fault
The batteries have run out of charge
-Recharge the batteries
-Check the battery and associated connections and wiring.
3
High battery fault
Battery voltage is too high, this may occur if overcharged and/or
traveling down a long slope.
-If traveling down a slope, reduce the speed to minimize the
amount of regenerative charging.
4
Current limit time-out or
controller overheat
The motor has been exceeding its maximum current rating for too
long.
-The scooter may have stalled. Turn the controller off, leave for a
few minutes and turn back on again.
-The motor may be faulty. Check the motor and associated
connections and wiring.
5
Park brake
Either a park brake release switch is active or the park brake is faulty.
-Check the park brake and associated connections and wiring.
-Ensure any associated switches are in their correct positions.
6
Drive inhibit
Either a stop function is active or charger inhibits or OONAPU
condition has occurred.
-Release the stop condition (seat raised etc.)
-Disconnect the battery charger.
-Ensure the throttle is in Neutral when turning the controller on.

Service Manual- CTM HS-850
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-The throttle may require re-calibration.
7
Speed pot
The throttle speed limit pot SRW or their associated wiring may be
faulty.
-Check the throttle and speed pot and associated connections and
wiring.
8
Motor voltage
The motor or its associated wiring is faulty.
-Check the motor and associated connections and wiring.
9
Other error
The controller may have an internal fault.
-Check all connection and wiring.
3-3 Other problem
Tire: The tires should be inspected frequently for damage, the presence of foreign bodies, unusual wear
and sufficient tread depth. If replacement tires are needed, please contact the nearest dealer.
The following areas require periodic inspection:
-Tire pressure between 30-50 psi
-Tread depth drops below 0.5 mm
Recommended range of storage, Temperature: -30oc ~ +50oc, Humidity : 25% ~ 85%
Follow these easy steps to replace the tire:
-Turn off the scooter and remove the key. Make sure the lever is in D position before you lift the scooter.
-Use a ratchet and socket to remove the drive wheel screw from the center hub of the wheel. Pull the
wheel off of the axle.
-Separate the tire from the rim.
-Remove the old tire and replace it with a new tire.
-Slide the wheel back onto the shaft.
-Install the drive wheel nut into the center hub and verify the key is lined up with axle and wheel, and
then tighten to secure it in place. (Torque 300±30kgf-cm)
Charger: During charging, light on charger doesn’t change to green. If LED (POWER) light is off
-Check the input voltage (115V/230V) is the same as you adjust.
-If light is still off, please check and repair the battery charger. (B)If LED (CHARGE) light is off
-Check to see clips connection is correct.
-If the battery is fully charged, the LED (CHARGE) light will be off.
-If light is still off, the battery may be defective. (C)If ORANGE light can turn to GREEN
-The battery cannot be charged. Please check and recover it. (D)If ORANGE light turns to GREEN
immediately
-Check to see the battery is fully charged, if not, the battery may be defective Check and recover it.

Service Manual- CTM HS-850
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Disassembly
4-1 Steering - Starter assembly / Variable Resistor
NO
ITEM NUMBER
DESCRIPTION
Torque (N-CM)
Torque(kgf-cm)
QTY
1
521220-89001
DELTA TUBE
1
2
521220-89001
DELTA TUBE
588±58.8N-CM
60±6kgf-cm
4
3
316300-74501
STARTER ASSEMBLY
1
4
501304-01205
BOLT (M4X12L)
147N-CM
15kgf-cm
2
5
521100-89001
STEERING BAR COMP.
1
6
525390-89000
LEVER HANDLE
2
7
504500-06105
NYLON NUT
2
8
325300-89003
STEERING ADJ ASSEMBLY
1
9
502508-02073
BOLT (M8X20L)
2450±245N-CM
250±25kgf-cm
4
10
525120-89001
JOINT B,STEERING ADJ LOWER
1
11
504500-06105
NYLON NUT
100±10kgf-cm
2
12
504900-08133
NYLON NUT , CAP (M8)
1568±156.8N-CM
160±16kgf-cm
1
Inspection points
When assembling, please use the torque wrench to make sure the tightening torque as the drawing.

Service Manual- CTM HS-850
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4-2 Front frame – Bar Assembly
NO
ITEM NUMBER
DESCRIPTION
Torque (N-CM)
Torque(kgf-cm)
QTY
1
531100-85017
FRAME COMP. , CHASSIS
1
2
336110-85010
FORK ASSEMBLY FRONT
1
3
526680-52800
PADLOCK
1274±127.4N-CM
130±13kgf-cm
1
3-1
536213-56000
RACE , STEERING OUTER UPPER
1
3-2
536215-56000
BALLS SET
has it greased
2
4
504500-06103
NYLON NUT (M6)
980±98N-CM
100±10kgf-cm
2
5
572410-55800
HOLDER,GUIDE
1
6
504500-10173
NYLON NUT (M10)
2940±294N-CM
300±30kgf-cm
1
7
504500-06103
NYLON NUT
980±98N-CM
100±10kgf-cm
2
8
502306-01673
BOLT , REAR BUMPER (M6X16L)
4
9
364300-89000
ANTI-TIPPER ASSEMBLY R
1
10
504500-06103
NYLON NUT (M6)
490±49N-CM
50±5kgf-cm
1
11
541310-83800
SUSPENSION COMP
1
12
502508-02073
BOLT , DIFFERENTIAL (M8X20L)
M8-1470±147N-CM
M8-150±15kgf-cm
4
13
502606-01213
BOLT
980±98N-CM
100±10kgf-cm
4
14
504500-06103
NYLON NUT
980±98N-CM
100±10kgf-cm
2
Inspection points
When assembling, please use the torque wrench to make sure the tightening torque as the drawing.

Service Manual- CTM HS-850
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4-3 Front wheel
NO
ITEM NUMBER
DESCRIPTION
Torque (N-CM)
Torque(kgf-cm)
QTY
1
361100-53900
FRONT WHEEL ASSEMBLY
1
2
504500-12193
NYLON NUT , FRONT AXLE (M12)
2940±294N-CM
300±30kgf-cm
1
3
504500-08133
NYLON NUT , RIM (M8)
2450±245N-CM
250±25kgf-cm
4
4
336110-53900
FORK ASSEMBLY ,FRONT
1
Inspection points
When assembling, please use the torque wrench to make sure the tightening torque as the drawing.
Range of tire pressure is around 35~40 psi.

Service Manual- CTM HS-850
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4-4 Air tire
Tool requirement,
5mm hex-key wrench
Instruction for disassembly
-Before removing the front and rear wheels, please do remove some pressure from wheels to prevent
any accident.
-Use 12mm hex-key wrench to rotate the cap as drawing,
-Then remove some pressure from tire.

Service Manual- CTM HS-850
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4-5 Rear Wheel, Motor, Transaxle.
NO
ITEM NUMBER
DESCRIPTION
Torque (N-CM)
Torque(kgf-cm)
QTY
1
511100-83800
MOTOR ASSEMBLY
1
2
502408-05053
BOLT , MOTOR (M6X50L)
M6-980±N-CM
M6-100±10kgf-cm
3
3
362200-74000
REAR WHEEL ASSEMBLY
2
4
502308-01673
BOLT , REAR RIM (M8X16L)
2450±245N-CM
250±25kgf-cm
8
5
504500-08133
NYLON NUT (M8)
2940±294N-CM
300±30kgf-cm
8
Inspection points
When assembling, please use the torque wrench to make sure the tightening torque as the drawing.
Range of tire pressure is around 30~50 psi.

Service Manual- CTM HS-850
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4-6 SEAT
NO
ITEM NUMBER
DESCRIPTION
Torque (N-CM)
Torque(kgf-cm)
QTY
1
571400-89000
SEAT COMP.
1
2
372200-68610
SLIDE ASSEMBLY
1
3
502608-01555
BOLT (M8X15L)
1274±127.4N-CM
130±13kgf-cm
4
4
372100-57001
SEAT BRACKET ASSEMBLY
1
5
504500-08133
NYLON NUT , SLIDE COMP. (M8)
1960±196N-CM
200±20kgf-cm
4
6
572455-92800
HOCK COMP,ADJ SEAT
1
7
502405-02295
BOLT (M5X22L)
294±29.4N-CM
30±3kgf-cm
2

Service Manual- CTM HS-850
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Maintenance
5-1 Motor Carbon brushes, article number, 51113-71120
Change of new carbon brush could effectively improve abnormal noise.
Carbon brush is consumables, which wears out after use, hence, in order to sustain motor quality, CTM
would recommend following:
-When one carbon brush is worn to 1/2 of its original length, it is necessary to replace 4 carbon brushes
by new ones.
-When one carbon is worn out by 2/3 of its original length, 4 carbon brushes must be replaced by new
ones.
-Suggested change for brush = one time only
5-2 Batteries (75ah)
Information for battery voltage,
-Normal situation: 12.95V~13.1V
-Low battery: Below 12.9v
-Dead battery: Below 12v
-First charging after receiving: 8hr.
-Weight : approx.. 24.37kg (53.61Lbs)
Information for battery storage temperature,
-Below 20°C, after full charging, can store 9 month.
-Between 20~30°C, after full charging, can store 6 month.
-Above 30°C, after full charging, can store 3 month.
Battery maintenance,
-To constant charge after use (reference to user manual)
-To check on battery terminals for oxidization or loose screw.
-To check on battery wire for fray
-To check on voltage using voltammeter

Service Manual- CTM HS-850
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Battery weight, approx. 24.37kg /pc, (12v. 75ah)
Battery dimension,

Service Manual- CTM HS-850
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Chien Ti Enterprise Co., Ltd.
No. 13, Lane 227, Fu Ying Rd., Hsin Chuang District, New Taipei City, Taiwan
Tel: [phone]
Fax: [phone]
Email: [email protected]m.tw
Website: www.chienti.com.tw