Minoura MAG-850LW User Manual

MAG-850LW series indoor bicycle trainer

instructions manual

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SCHEMATIC

LM-11

LM-12

M8-3

LM-2

F-8

M8-2

F-4

LM-8

F-9

F-2

F-1

M8-4

LM-3

F-4

F-7

M8-3

M8-4

LM-7

LM-9

HM-13

LM-4 / LM-5

LM-13

F-1 : Coupling (Right) LM-2 : Flywheel Side Inner Case
F-4 : Coupling Cover (move side) LM-3 : Mag Side Inner Case
F-7 : Hub Handle (3/8” thread) LM-4 : Dial Outer Cover
F-8 : Wheel Position Adjust Knob LM-5 : Remote Outer Cover
F-9 : Hub Nut Protector (Grommet) LM-7 : Alloy Rotor
M8-2: MAG-850W Main Frame LM-8 : Axle w/ Bearings
M8-3: Rubber Frame Cap (38.1mm) LM-9 : Connection Plate
M8-4: Rubber Foot Cap (31.8mm) LM-11 : Flywheel Cover (blue)

LM-12 : Flywheel (850g)
LM-13 : Foot Pedal
HM-13 : Base Plate

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IMPORTANT NOTES

• Read all instructions carefully before use.• Read all instructions carefully before use.

• Read all instructions carefully before use.

• Read all instructions carefully before use.• Read all instructions carefully before use.

• Some assembly required.• Some assembly required.

• Some assembly required.

• Some assembly required.• Some assembly required.

• Keep the manual handy at all times.• Keep the manual handy at all times.

• Keep the manual handy at all times.

• Keep the manual handy at all times.• Keep the manual handy at all times.

• Do NOT use trainer for any other purpose than instructed.• Do NOT use trainer for any other purpose than instructed.

• Do NOT use trainer for any other purpose than instructed.

• Do NOT use trainer for any other purpose than instructed.• Do NOT use trainer for any other purpose than instructed.

• The trainer is manufactured to precise standards. You may not disassemble or rebuild it.• The trainer is manufactured to precise standards. You may not disassemble or rebuild it.

• The trainer is manufactured to precise standards. You may not disassemble or rebuild it.

• The trainer is manufactured to precise standards. You may not disassemble or rebuild it.• The trainer is manufactured to precise standards. You may not disassemble or rebuild it.

• "Magturbo" is the trademarks of Minoura Co.,Ltd. and may not be copied.• "Magturbo" is the trademarks of Minoura Co.,Ltd. and may not be copied.

• "Magturbo" is the trademarks of Minoura Co.,Ltd. and may not be copied.

• "Magturbo" is the trademarks of Minoura Co.,Ltd. and may not be copied.• "Magturbo" is the trademarks of Minoura Co.,Ltd. and may not be copied.

WARNINGS

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

Use two-wheeled bicycles only. Tandems may be used if balanced correctly.Use two-wheeled bicycles only. Tandems may be used if balanced correctly.

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Replace your quick release skewer with the one supplied and install the coupling protector cap onReplace your quick release skewer with the one supplied and install the coupling protector cap on

Replace your quick release skewer with the one supplied and install the coupling protector cap on

Replace your quick release skewer with the one supplied and install the coupling protector cap onReplace your quick release skewer with the one supplied and install the coupling protector cap on

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to the right side coupling of the trainer. Otherwise the stability will not be guaranteed.to the right side coupling of the trainer. Otherwise the stability will not be guaranteed.

to the right side coupling of the trainer. Otherwise the stability will not be guaranteed.

to the right side coupling of the trainer. Otherwise the stability will not be guaranteed.to the right side coupling of the trainer. Otherwise the stability will not be guaranteed.

Remove the coupling protector cap when you use your own quick release skewer.Remove the coupling protector cap when you use your own quick release skewer.

Remove the coupling protector cap when you use your own quick release skewer.

Remove the coupling protector cap when you use your own quick release skewer.Remove the coupling protector cap when you use your own quick release skewer.

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Remove all oils and moisture from the drive roller and the tire before use.Remove all oils and moisture from the drive roller and the tire before use.

Remove all oils and moisture from the drive roller and the tire before use.

Remove all oils and moisture from the drive roller and the tire before use.Remove all oils and moisture from the drive roller and the tire before use.

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Keep both hands on handlebars at all times and maintain a normal riding position.Keep both hands on handlebars at all times and maintain a normal riding position.

Keep both hands on handlebars at all times and maintain a normal riding position.

Keep both hands on handlebars at all times and maintain a normal riding position.Keep both hands on handlebars at all times and maintain a normal riding position.

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Check the couplings supporting the rear hub for damage and cracks.Check the couplings supporting the rear hub for damage and cracks.

Check the couplings supporting the rear hub for damage and cracks.

Check the couplings supporting the rear hub for damage and cracks.Check the couplings supporting the rear hub for damage and cracks.

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Accidents may occur from cracked or damaged couplings. (Fig. A)Accidents may occur from cracked or damaged couplings. (Fig. A)

Accidents may occur from cracked or damaged couplings. (Fig. A)

Accidents may occur from cracked or damaged couplings. (Fig. A)Accidents may occur from cracked or damaged couplings. (Fig. A)

You should not tighten the wheel axle by tightening the left side knob.You should not tighten the wheel axle by tightening the left side knob.

You should not tighten the wheel axle by tightening the left side knob.

You should not tighten the wheel axle by tightening the left side knob.You should not tighten the wheel axle by tightening the left side knob.

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This is for pre-adjusting the wheel position to the exactly center of theThis is for pre-adjusting the wheel position to the exactly center of the

This is for pre-adjusting the wheel position to the exactly center of the

This is for pre-adjusting the wheel position to the exactly center of theThis is for pre-adjusting the wheel position to the exactly center of the
drive roller only. Securley tightening your bike to the trainer should bedrive roller only. Securley tightening your bike to the trainer should be

drive roller only. Securley tightening your bike to the trainer should be

drive roller only. Securley tightening your bike to the trainer should bedrive roller only. Securley tightening your bike to the trainer should be
done with the right side hub handle only.done with the right side hub handle only.

done with the right side hub handle only.

done with the right side hub handle only.done with the right side hub handle only.

When using the trainer, place it on a flat surface for safe training.When using the trainer, place it on a flat surface for safe training.

When using the trainer, place it on a flat surface for safe training.

When using the trainer, place it on a flat surface for safe training.When using the trainer, place it on a flat surface for safe training.

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Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer orDo not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

Do not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer orDo not over tighten the hub-clamp handles. Over-tightening may cause damage to the trainer or

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bicycle frame. The clamp handles should be a snug and secure fit. Do not force!bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

bicycle frame. The clamp handles should be a snug and secure fit. Do not force!bicycle frame. The clamp handles should be a snug and secure fit. Do not force!

Before use, make sure all bolts and nuts are securely fastened.Before use, make sure all bolts and nuts are securely fastened.

Before use, make sure all bolts and nuts are securely fastened.

Before use, make sure all bolts and nuts are securely fastened.Before use, make sure all bolts and nuts are securely fastened.

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(Fig. A)

Keep away from small children, and keep hands and feet away from spinning rollers and wheels atKeep away from small children, and keep hands and feet away from spinning rollers and wheels at

Keep away from small children, and keep hands and feet away from spinning rollers and wheels at

Keep away from small children, and keep hands and feet away from spinning rollers and wheels atKeep away from small children, and keep hands and feet away from spinning rollers and wheels at

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all times.all times.

all times.

all times.all times.

Open the legs fully to get maximum stability.Open the legs fully to get maximum stability.

Open the legs fully to get maximum stability.

Open the legs fully to get maximum stability.Open the legs fully to get maximum stability.

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HOW TO SETUP YOUR MAG-850 TRAINER

1

2

Open the frame support legs and fit the rubber feet at the correct angle so the base is in full contact with
the floor. Do NOT remove the round metal plates from inside the rubber feet when fitting. Ensure the
rubber foot caps are facing outwards as incorrect fitting may compromise the stability of the trainer.

NOTE: If the both legs don’t touch the floor at same time and if one side of the leg is still being lifted up slightly, pull

up the leg upward strongly then place the trainer on the floor again.

Left Side Knob

Open both couplings by turning the left side knob (see Fig. B) and the
right side hub handle (see Fig. C) anti-clockwise.
Do not over-loosen the couplings, otherwise the knob or the hub handle
may become unthreaded inside the frame.

(Fig. B)

NOTE:NOTE:

NOTE: We suggest you do not need to move the left side coupling away so

NOTE:NOTE:
much. It should be fine to move by the center of its length, but it needs to be
adjusted depends on the hub width. (see Fig. D)

Right Side Hub Handle

3

4

5

Insert the left side of the skewer (Q/R lever side) into the left side cou­pling, and adjust the rotation of the coupling so the skewer lever sits
securely in the large cut-out (see Fig. E). This will prevent damage to the
skewer during use.

Hold the bike firmly by hand and turn the right side hub handle clock­wise until the coupling comes into contact with the right side skewer
nut.

Apply the Mag unit to the tire by lifting up it temporally to know the
wheel position. If the tire touches either left or right side platic housing

(Fig. C)

(Fig. D)

(Fig. E)

of the Mag unit (see Fig. F), you must adjust the wheel position again by
operating both left knob and the right hub handle.

NOTE:NOTE:

NOTE: Be sure that the left knob is NOT for tightening the axle. It is only for

NOTE:NOTE:
positioning the wheel. Clamping wheel securely must be done by the right side
hub handle.

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(Fig. F)

6

7

At this point, stop tightening the hub handle and ensure that both ends of
the skewer are securely inserted into the couplings. Finally turn the hub
handle a maximum of two more turns to ensure the bicycle is held firmly.

NOTE:NOTE:

NOTE: Over-tightening the hub handle may cause damage to either the trainer

NOTE:NOTE:
or your bicycle.

Turn the micro-adjust screw located beneath the foot pedal at the rear of
the trainer until the rear tire is 2mm away from the drive roller.
(see Fig. G & H)

(Fig. G)

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Press down on the foot pedal to bring the drive roller into contact with
the rear tire (see Fig. I). If the tire is compressed more than 3mm by the
roller, release the foot pedal and loosen the micro-adjust screw until the
tire is compressed by 2 - 3mm when in contact with the drive roller.

WARNING: Too much or too little contact between the tire and the roller

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can cause premature tire wear and possibly damage the drive roller.

USING THE SMALL WHEEL ADAPTER

(Required Tools: M5 hex wrench, 10mm open spanner)

(Fig. H)

(Fig. I)

If you wish to use any smaller wheel sized between 24 x 1.0”
and 26 x 1.75” on the trainer, install the supplied adapter under
the Mag unit. (see Fig. J)

1

Remove two bolts which hold the Mag unit on
the fitting bracket by an M5 hex wrench. Then
the Mag unit will be removed.

2

Install the supplied “Z” shaped adapter on the fitting
bracket with the removed bolts.
Make sure the direction of the adapter is exactly same
as shown in Fig. J.

3

Install the Mag unit onto the adapter with the supplied bolts.
Be sure you should use a 10mm open spanner to tighten these bolts, not by a hex wrench.

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Adapter

Fitting Bracket

10mm Spanner

(Fig. J)

USING THE PLATIC SKEWER NUT PROTECTOR

We recommend you should replace your wheel axle to the supplied quick
release skewer to avoid any fitting problem that may occur during work­out, because our coupling is designed to fit to the supplied skewer only.

(Fig. K)

The right side coupling has a black plastic skewer nut protector (called a “Grommet”). This is to protect your
skewer from damage during use.
Minoura cannot guarantee compatibility with all makes and models of skewer, however when using your own
skewer please use the supplied grommet.

We will NOT guarantee any fitting problem or accident caused by using your own skewer on the trainer.We will NOT guarantee any fitting problem or accident caused by using your own skewer on the trainer.

We will NOT guarantee any fitting problem or accident caused by using your own skewer on the trainer.

We will NOT guarantee any fitting problem or accident caused by using your own skewer on the trainer.We will NOT guarantee any fitting problem or accident caused by using your own skewer on the trainer.

When you use the supplied skewer, you should remove the grommet from the coupling. It can be done by
inserting a rod or a pen to the hole (see Fig. K) and lift up the grommet.

HOW TO INSTALL THE REMOTE LEVER

You can install the remote lever on anywhere the diameter is between 22.2mm (7/8”) and 31.8mm (1-1/4”) like as
on the handlebar.

1

Fully loosen the knob bolt on the plastic holder until it stops then push down the bolt to open the holder.
(see Fig. L)

2

Place the holder onto the handlebar, shut the holder, and pull up the bolt then tighten it. (see Fig. M)

(Fig. L)

(Fig. M)

Depends on the diameter of your handlebar, you must adjust the

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shim as follows;

• 22.2mm (7/8”) - 25.4mm (1”): Install both shims.

• 28.6mm (1-1/8”): Install either right or left side shim.

• 31.8mm (1-1/4”): Remove both shims.

When you install the shim on the plastic holder, make sure the
direction of the shim as shown in Fig. N.

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Shim

(Fig. N)

USING THE MAG RESISTANCE UNIT

The Mag unit has 7 different levels of load force, replicating actual riding resistance.
The load settings range from high (H) to low (L) can be adjusted via the white lever on the Magturbo unit or the
lever on the thumb shifter type remote lever device. You may also adjust the load force by shifting up or down
among your gears, depending on the level desired.
We recommend that you start with a medium to low load force and gradually work up, increasing force as your
muscles warm up.

HH

H

HH

Increasing Load ForceIncreasing Load Force

Increasing Load Force

Increasing Load ForceIncreasing Load Force

To increase the load force, move the white lever on the Mag unit toward the (H) symbol.
(see Fig. O)
If your Mag unit is a remote control type, turn the lever on your thumb shifter device
toward the (H) symbol. (see Fig. Q)

Decreasing Load ForceDecreasing Load Force

Decreasing Load Force

Decreasing Load ForceDecreasing Load Force

To decrease the load force, move the white lever on Mag unit toward the (L)
symbol. (see Fig. P)
Be sure the lowest selection is not zero load, there still be a small level of force.
If your Mag unit is a remote control type, turn the lever on your thumb shifter
device toward the (L) symbol.

You must not be riding the trainer when you are adjusting the white lever onYou must not be riding the trainer when you are adjusting the white lever on

You must not be riding the trainer when you are adjusting the white lever on

You must not be riding the trainer when you are adjusting the white lever onYou must not be riding the trainer when you are adjusting the white lever on

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the Mag unit for load force. Make sure all parts have stopped spinning. Dothe Mag unit for load force. Make sure all parts have stopped spinning. Do

the Mag unit for load force. Make sure all parts have stopped spinning. Do

the Mag unit for load force. Make sure all parts have stopped spinning. Dothe Mag unit for load force. Make sure all parts have stopped spinning. Do
not try to adjust the lever with your feet while riding.not try to adjust the lever with your feet while riding.

not try to adjust the lever with your feet while riding.

not try to adjust the lever with your feet while riding.not try to adjust the lever with your feet while riding.

(Fig. O)

LL

L

LL

(Fig. P)

(Fig. Q)

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TROUBLE SHOOTING YOUR REMOTE SHIFTER UNIT

If you cannot shift to either the lowest (L) or the highest (H) position, it is possible
that the inner wire of the remote shifter cable is too long and the wire tension is

Nut Plastic Cap

Cable

loose. If so, please adjust the tension with the following steps.

1

2

3

Set the remote shifter lever at “H” position. Remove the remote shifter
device from the handlebar and straighten the cable.

Remove the plastic cap located on the bottom of the cable. (see Fig. R)

Hold the adjusting screw with your right hand and push it towards the

Wire Tension

Adjusting Screw

(Fig. R)

direction of the outer cable, then adjust the nut with your left hand to make
the wire tension properly.

If you experience that the remote lever will move toward “H” unexpectedly automarically when you pedal hard,
try to tighten the adjusting screw 1/4 rotation. It is located under the remote lever holder.

FOR MORE INFORMATION

MINOURA JAPAN HEAD OFFICEMINOURA JAPAN HEAD OFFICE

MINOURA JAPAN HEAD OFFICE

MINOURA JAPAN HEAD OFFICEMINOURA JAPAN HEAD OFFICE

1197-1 Godo, Anpachi, Gifu 503-2305 JAPAN
Fax [phone] / E-mail: [e-mail]
http://www.minoura.jp

MINOURA NORTH AMERICA MINOURA NORTH AMERICA

MINOURA NORTH AMERICA

MINOURA NORTH AMERICA MINOURA NORTH AMERICA

1996 East Avenue, Hayward, CA 94541-5454 U.S.A.
Fax [phone] / E-mail : [e-mail]

(for North American residents only)(for North American residents only)

(for North American residents only)

(for North American residents only)(for North American residents only)

Made & Quality Controlled in Japan

Copyright © 2003-2004 Minoura Co., Ltd., All Rights Reserved.

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