SportsArt Fitness S770 Operating instructions

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 – DriveAxle Removal
4-5-2. Component Removal and Installation – DriveAxle 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.