SportsArt S770 User manual

S770 Repair Manual (Mechanics)

Table of Contents

1-1-1. Blowup Diagram - S770 (Continued on 1-1-4)

2-1-1. Basic Adjustments - S770 Leveling

2-1-2. Basic Adjustments - S770 Elastic Cord Adjustment

2-2-1. Unit Maintenance - S770 Foot Carriage Roller Maintenance

2-2-2. Basic Maintenance - S770 Foot Carriage Lubrication

2-2-3. Basic Maintenance - S770 Daily Cleaning

3-1-1. Mechanical Component Inspection

3-2-1. Mechanical Troubleshooting Chart

3-3-1. Component Inspection – Alternator

3-3-2. Component Inspection – Flywheel

3-3-3. Component Inspection – Knob Belt and Elastic Cord

3-3-4. Component Inspection – Foot Carriage, Glide Track

4-1-1. Component Removal and Installation – Drive Board/Battery Removal

4-2-3. Component Removal and Installation – Lower Cover Removal (Continued to 4-2-4)

4-3-1. Component Removal and Installation – Alternator Removal

4-3-2. Component Removal and Installation – Alternator Installation

4-4-1. Component Removal and Installation – Knob Belt & Elastic Cord Removal (Continued to 4-4-2)

4-4-3. Component Removal and Installation – Knob Belt & Elastic Cord Installation (Continued to 4-4-4)

4-5-1. Component Removal and Installation – Drive Axle Removal

4-5-2. Component Removal and Installation – Drive Axle Installation (Continued to 4-5-5

4-6-1. Component Removal and Installation – Flywheel and Belt Removal

4-6-2. Component Removal and Installation – Flywheel and Belt Installation

4-7-1. Component Removal and Installation – Cable Removal (Continued to 4-7-2)

4-7-3. Component Removal and Installation – Cable Removal (Continued to 4-7-4

4-8-1. Component Removal and Installation – Foot Carriage and Glide Track Removal (Continued to 4-8-4)

4-8-5. Component Removal and Installation – Foot Carriage and Glide Track Installation (Continued to 4-8-6)

4-9-1. Component Removal and Installation – Optic Sensor Installation

4-10-1. Component Removal and Installation – HTR Contact Plate Removal

4-11-1. Component Removal and Installation – Rocker Arm Removal

4-11-2. Component Removal and Installation – Rocker Arm Removal, (Continued to 4-11-2)

1-1. Blowup Diagram - S770

1-1-1

1-1. Blowup Diagram - S770

1-1-2

1-1. Blowup Diagram - S770

1-1-3

1-1. Blowup Diagram - S770

1-1-4

1-2. Mechanical Component Introduction - S770

1-2-1

1-

2-1

Glide track

Footplate carriage

Alternator／Flywheel

Cable pulley

Knob belt

Elastic cord

Idler pulley

Drive axle

Knob belt and pulleys

Motion rod

2-1. Basic Adjustments - S770 Elastic Cord Adjustment

2-1-2

Elastic cord adjustment

1. Open the cover. Adjust elastic

cord as desired. Use zip ties to

secure the elastic cord.

Reinstall the cover.

2. Adjust both sides equally at

the same time.

2-1. Basic Adjustments - S770 Alternator Belt Adjustment

2-1-3

Step 1.

Loosen the screw shown

below. Press down on the

alternator. The screw position

will become lower. And the belt

will tighten.

Step 2.

As you assert pressure on the

alternator, secure the screw. After

making the adjustment, inspect unit

operation for noise and other issues.

2-2. Unit Maintenance - S770 Foot Carriage Roller Maintenance

2-2-1

Step 2:

On the axle, brush on at least 1mm

thick of lubricant.

Step 1:

Lubricate inner and outer diameter

of roller bearings.

2-2. Basic Maintenance - S770 Foot Carriage Lubrication

2-2-2

Step 4:

Re-assemble, inserting the axle

from the exterior. (Insert wave

washer on the roller side.)

Step 3:

Use a brush to apply lubricant to

inner diameter holes of the foot

carriage. Total: 8 holes.

Step 5:

Wipe off excess lubricant.

Then install the washer and

E-clip.

Step 6:

After completion, make sure

everything has been installed

properly.

2-2. Basic Maintenance - S770 Daily Cleaning

2-

2-3

Use a dry cloth to wipe sweat

from the glide tracks. Daily

Use a dry cloth to wipe sweat

from the display. Daily

Use a dry cloth to wipe dust

from the rollers under the foot

carriage. Weekly

Use a dry cloth to wipe sweat

from the handle arms. Daily

Use a dry cloth to wipe sweat

from the supports. Daily

Use a dry cloth to wipe sweat

from handles. Daily

Use a dry cloth to wipe sweat

from this area. Daily

3-1. Mechanical Component Inspection

Item Part Inspection Note

1 Optic sensor 1. Make sure the optic sensor is within 4-5mm from the reflective sticker.

2 Knob belt/Elastic cord 1. Make sure the knob belt is in the center of its pulley.

2. Make sure the elastic cord isn’t too loose and sagging. Adjust if necessary.

3 Pulley cable 1. Inspect the cable from the pulley to both foot carriages. Is the cable covering worn?

2. Inspect whether the cable sits in the pulley channel properly.

4 Flywheel 1. Make sure the flywheel belt aligns properly on the flywheel during operation.

2. Make sure the belt tracks within its channel.

3. Make sure the alternator belt tracks within its channel.

4. Make sure the underside of the belt isn’t worn irregularly or cracking.

5 Leveling Rock the unit. Make sure unit is level and does not rock. If it does, adjust levelers.

6 Foot carriage and glide

tracks

1. Make sure glide tracks are clean. If not, wipe them with a dry towel, slightly dampened

with silicone lubricant.

2. Inspect rollers under the foot carriage for abnormal sounds. If so, place lubricant on the

axles.

3. Use SportsArt lubricant to prevent abnormal noise and other defects.

3-1-1

3-2. Mechanical Troubleshooting Chart

Item Issue Remedy Note

1 Unit wobbles or rocks

during use.

1. Inspect and adjust levelers.

2 Foot carriage locks up

with heavy resistance

during use.

1. Inspect whether the black, O-shaped spacer beside the rollers fell out of place,

getting caught. Simply remove the O-shaped spacer and discard it.

2. Inspect whether flywheel belt has become stuck.

3. Inspect whether the flywheel magnet has slipped and attached to the flywheel.

3 Motion is rough during

use.

1. Inspect glide tracks for dirt. Clean as necessary.

2. Inspect rollers under the foot carriage.

3. Inspect flywheel belt for irregularities.

4. Inspect whether the magnet is sticking on the flywheel.

4 There is no resistance

curing use.

1. Inspect the electro-magnet wire connections on the flywheel.

2. Inspect the space between the electro-magnet and the flywheel.

3. Inspect whether the flywheel belt broke or fell off.

4. Inspect flywheel bearings.

5. No step value. 1. Make sure the distance between the optic sensor and the flywheel sticker is 4-5mm.

2. Inspect whether the alternator belt has jumped the track. Adjust alternator positioning

bracket.

6 Noise emanates from

below the foot carriage.

1. Clean the glide track.

2. Clean the rollers.

3. Inspect whether noise comes from the rollers. If so, lubricate roller/axle area.

7 Arm bearings have an

abnormal noise.

1. Inspect or replace arm bearings.

3-2-1

3-3-1. Component Inspection - Alternator

3-3-1

Inspect alternator belt tightness.

( If too loose, loosen screw Ａ,

press down on the alternator to

pull the belt tight, then secure

screw A again.

Exercise briskly to inspect

whether the alternator belt

jumps the channel.

(If it does so, inspect and

adjust the alternator

bracket angle.)

Screw Ａ

3-3-2. Component Inspection - Flywheel

3-3-2

螺絲Ａ

Make sure the flywheel belt

operates in the center of its pulley

without jumping off track.

Make sure that the flywheel belt

and idler pulley belt are on track

and not tending toward one side or

the other.

3-3-3. Component Inspection – Knob Belt and Elastic Cord

3-3-3

Make sure the knob belt operates

properly without jumping track.

Inspect the distance between the

optic sensor and the reflective

sticker. Normal: 4-5mm

Inspect pulley

operation. Inspect

whether the elastic

cord has jumped

track.

Inspect whether elastic cord or knob

belt is too loose.

 If so, adjust the elastic cord

tightness.

3-3-4. Component Inspection – Foot Carriage, Glide Track

3-3-4

Exercise on the unit. Does the foot

carriage roller glide smoothly?

 If not, inspect whether the roller is

dirty. Clean it as needed.

Exercise on the unit. Does the

foot carriage roller get stuck?

 If not, inspect the black,

O-shaped spacer. Remove it.

Inspect the glide track for dirt.

Clean all dirt from the glide

track.

4-1. Component Removal and Installation–Drive Board/Battery Removal

4-1-1

Step 2

Remove cover screws and the cover.

Step 3

This is all it takes to access the drive

board and battery. Reinstall parts in

reverse order.

Step 1

Remove covers shown below.

A

B

4-2. Component Removal and Installation – Lower Cover Removal

4-2-1

Step 1

Remove two screws. Then remove

support lower covers.

Step 2

Remove 4 screws shown below. Then

remove supports. Remove supports on

both sides in the same way.

Step 3

Remove soft caps and screws. Then

remove the rear base cover.

Step 4

Remove central pulley cover screws

and washers.

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SportsArt S770 User manual

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