Minoura FG542 Instructions Manual

Minoura FG542 Instructions Manual
Indoor Bike Trainer
(ver.1.1 2018/11)
[Applicable Wheel Size]
650c – 700c, 26 – 29 inch
[Applicable Wheebase Size]
950 – 1,200mm
What's New?
● New ribbed belt eliminates slippage
or squealing noise for less trouble
● Add one more heavy steel flywheel
cap on the roller for smoother pedal
● Increase the durability of the joint
mechanism between the tripod and
the center frame
● Wheelbase scale decal on the
center frame helps quicker setting up
of various bikes
(Shown with 700c road bike)
• This trainer is designed for use only on stable or indoor surfaces. The trainer is not
designed to be used in muddy or off road conditions. Getting dirt in the resistance unit
may cause damage. Using muddy or dirty tires will cause premature wear on the rollers.
• Using 24" or smaller wheels may put undue stress on the unit and will alter the angle of
the bicycle significantly.
• When setting up the FG540 pedal slowly at first to make sure the rear wheel stays on
the roller and is positioned properly.
If you need help, please contact the shop first where you originally purchased this product or call the distributors
in your country. The distributors list can be found on our web site.
MINOURA North American Tech Center
MINOURA Japan Headquraters
(for U.S. residents ONLY) (for ALL customers)
Hayward, California, U.S.A.
1197-1 Godo, Anpachi, Gifu 503-2305 Japan
Phone: 1-510-538-8599 (8 am - 5 pm, Mon - Fri, PST)
Phone: +81-584-27-3131
Fax: 1-510-538-5899Fax: +81-584-27-7505
Email: support@minourausa.comEmail: minoura@minoura.jp
Web: www.minoura.jp
Important Notes
Please Read Carefully Before Use
• For use with a standard 2-wheel bike with the wheel size between 650c and 700c or 26 and 29 inch
and the wheelbase size between 950 and 1,200mm.
Any longer wheelbase bike such as a tandem or long-tail or other types of bike such as recumbent
or folding bike won't fit FG542.
• The front hub is 100mm width and equipped with 9mm standard or 12mm/15mm thru-axle type. Any
other hub size cannot be used.
Boost hub can be used by using the optional adapter (sold separately).
• The rear triangle of your bike rides freely on the roller. Be careful not to fall down while getting on or
off the bike. Use the handlebar to steady yourself put do not pull on the bars as this may cause the
bike to tip.
The best way to mount the trainer is to stand close to the side of the saddle. Center yourself low
and to the center of the bike, clip into one pedal then slowly swing your other leg over the bike and
clip into the second pedal.
• The quick release skewer in the front fork support is floating mounted with a plastic bushing to avoid
the damage caused by side-to-side shaking during riding. For this reason, the bolts which hold the
bushing are not fully tightened intentionally and there is some space above the bolt.
• Minoura recommends the use of a completely slick (no tread) tire to reduce noise and increase the
longevity of the tire and rollers.
• The FG542 comes equipped with a standard quick release skewer (Q/R) for the front fork mount.
Tighten the Q/R as you would your wheel to your bike, close it firmly and tightly.
If you are unsure, consult your local bike shop for help.
• Your rear tire must contact both rollers evenly. Adjust the center arm/frame exactly.
Incorrect adjustment will result in unbalanced resistance and poor bike stability.
• For your safety, place the FG542 on a flat, even floor or surface. Make sure all legs are fully opened.
Make sure to check the trainer stability, especially when raising the front fork mount.
Doing so will decrease stability, cause your tire to burst or throw you off the bike. Simply reduce your
cadence and let the bike come to a natural stop.
• Keep the children and pets away from the spinning wheel or moving parts.
• It's impossible to change to non-remote type. Removing the remote shifter will automatically set the
resistance level at the maximum position.
• Minoura recommends to use a mat underneath the trainer to protect the floor from sweat or stain
from the rubber feet.
• If you hear a strange noise or smell something unusual, immediately stop using the the trainer and
contact your Minoura dealer. Do not try to disassemble the product without consulting your dealer
or Minoura first.
• Any warranty will be void if you use FG542 for other purpose than instructed.
Minoura offers 1-year limited warranty on this product from the date of your purchase for any
problem caused by manufacturer's defect. Natural wear will not be covered.
Any damage or problem caused by transporting process is not covered under warranty. Any damage
from shipping or moving must be made to the shipping company.
Read the enclosed "Minoura Limited Warranty Policy" card for more detail.
For the latest information, refer Minoura web site (http://www.minoura.jp).
Part Names
Front Fork Support
(9mm Q/R, 15mm Thru Axle compatible)
•Guide Sleeve for 15mm Thru Axle
(Silver, outside)
•Adapter Sleeve (red, middle)
•Axle Support for 9mm Q/R
(plated, inside)
Stopper Pin
Knob Lever (backside)
Guide Sleeve for
12mm Thru Axle
Remote Cable Guide
(backside, Right side only)
Front Frame /
Tripod Left Side Leg
Remote Shifter (for FG540/542 only)
Front Frame /
Tripod Center Leg
Front Roller
(free spinning side)
Ribbed Belt
Plastic Cap
Front Frame /
Tripod Right Side Leg
Center Frame Locking Knob
Steel Flywheel Cap
(without groove)
Center Frame Connecting Q/R
Rubber Cap
Center Frame
Remote Cable
Rear Roller
(driven side)
Steel Flywheel Cap
(with belt groove)
Magnetic Resistance Unit
Rear Frame
How To Setup FG542
No Tool Required
To adjust the hardness
of opening/closing the
tripod leg, adjust the
tightening of this bolt.
(Tool required)
Fully open all tripod
legs, and place on the
floor. (Fig. A)
Confirm all legs
are fully opened.
Do not pinch
your finger when
closing the legs.
(Fig. A)
Flip out the retracted center frame, and place
on the floor. (Fig. B)
Loosen the center frame locking knob to
prepare for sliding.
(Fig. B)
Connect the front hook of the center
frame to the tripod center leg, pull a
little, and tighten the Q/R firmly.
(Fig. C)
Assembling FG542 is now finished.
(Fig. C)
If the center frame comes out
from the tripod while using,
you may have to fall down.
The joint area has
been reinforced.
Firmly tighten the
(Fig. D)
How To Adjust The Front Fork Support Height
Turn the knob lever counter-clockwise to loosen,
and pull up the front fork support.
The lever becomes free by pulling the lever. You can
set the lever at your favorite angle.
Slide down the fork mount until the stopper
pin reaches the front frame. (Fig. H)
Twist the front fork support to confirm if it has
been set in the deepest bottom.
Stopper Pin
Front Fork Support
Knob Lever
(Fig. E)
The stopper pin can be removed only while the fork
mount is lifted up. (Fig. F)
(Fig. H)
Turn the knob lever clockwise and tighten
firmly. (Fig. I)
(Fig. I)
(Fig. F)
Simulating Uphill Angle
Insert the pin into the hole that corresponds best to
the incline you want. (Refer Fig. J)
Each hole corresponds to an angle that simulates
climbing. (based on a 700c wheel)
(Fig. G)
Raising up the front fork
will make the front fork
support come closer
(the distance becomes
Do not forget to readjust the center frame
position after changing.
(Fig. J)
How To Use The 15mm Thru Axle
Required Tool : 3mm Hex Wrench (not included)
The front fork support is compatible with both the standard 9mm quick release
skewer and the 12mm & 15mm thru type axle.
(Boost Hub require optional adapter.)
(View from the bottom side
of the fork support)
To use 15mm thru axle, you need to remove the red middle adapter sleeve
together with the quick release skewer.
Remove the headless bolts under the silver guide sleeve (do not remove the
normal bolts) and pull out both the red guide sleeve and the Q/R.
Align the front fork and the fork support hole, insert the 15mm axle to set the
front fork.
Make sure the bolt type you are going to remove.
Do not remove the standard bolt with head.
Be sure the normal bolts are
not fully tightened intentionally.
Adapter Sleeve (red)
How To Mount Your Bike
(Fig. K)
Axle Support for 9mm Q/R (plated)
Guide Sleeve for
15mm Thru Axle
Remove the front wheel from your bicycle and set the front fork into the mount firmly.
Confirm if the plated axle support for 9mm Q/R is set symmetically from the red
adapter sleeve. If not, loosen the headless bolts, adjust the axle support position, and
tighten the headless bolts to fix the position.
(Fig. L)
Place the rear wheel on both rear rollers.
Slide and adjust the center frame position so that your rear tire contacts both rollers evenly. (Fig. N)
Finally, tighten the center frame locking knob firmly to fix the position.
The headless bolts may come
loose while using due to the
It should cause a serious
trouble that the axle support
will change its position and
the front fork end has come off
from the sleeve and the bike
fall down.
Regularly confirm if the axle
support is set in the correct
Do NOT grasp brake
lever after removing
the wheel if your bike is
equipped with hydraulic
disc brake.
(Fig. M)
The rear tire sits in the center of
the roller and doesn't touch any
other parts. (Fig. O)
(Fig. O)
Tire touches both rollers at once
The center frame has a scale
decal that shows the wheelbase
size. It helps you when you
need to mount various bikes.
(Fig. P)
(Fig. N)
Adjust the center frame position properly that the rear tire contacts both rollers.
If the tire touches the rear roller only and a clearance exists between the tire and the front
roller, the center frame repeats jumping while riding. Set the rear frame backward.
If the tire touches the front roller only, slippage occurs and it will bring premature tire wear.
Set the rear frame forward. (Fig. N)
It's normal for the rear tire to sway or move back and forth slightly
while using (Fig. Q). As long as the tire doesn't touch the sides of
the rollers this is ok (Fig. O).
If you find the tire is not centered properly, check if the front fork is mounted
on the quick release skewer properly, or if the handlebar has been twisted a
If the bike has been slanted, loosen the quick release skewer and push down
the front fork until end.
If the handlebar has been twisted, loosen the Knob Lever, adjust the steering
angle, and tighten the lever firmly.
There is a guide bracket on
the right side tripod leg to
hold the remote cable.
(Fig. R)
(Fig. Q)
With normal use you may find that the roller belt has become loose. A loose
belt could be a serious issue if unattended. If you find the belt has become
loose, it is important to tighten the tension on the belt correctly.
To do so, use an M4 hex wrench to loosen the previously mentioned bolts
while sliding the mag unit forward to increase the tension on the belt until
the correct tension has been achieved. (Fig. R)
How To Operate Remote Shifter
Required Tool : 4mm Hex Wrench (not included)
FG542 comes with a convenient remote shifter device.
By installing it on your handlebar or stem, you can adjust the resistance
level in 13 levels without getting off the bike.
The plastic band is soft enough to fit aero-shaped carbon handlebar or
round shaped stem as well as the standard round dimension handlebars.
How to install the remote shifter
1) Loop the plastic band around the handlebar
2) Hook the tip to the edge on the plastic shifter base (Fig. S ① )
3) Flip up the lever to lock (Fig. S ② )
(Fig. S)
How to increase the resistance level
Twist the shifter dial toward "H" symbol (Fig. U)
How to reduce the resistance level
Twist the shifter dial toward "L" symbol
(Fig. T)
"L" does not mean no resistance. Due to the tire contact
to the roller, there will still be some small resistance.
The preset inner diameter size of the remote shifter's band may be too
loose or too tight to your handlebar. Or you may need to install the shifter
onto an oversized handlebar or stem.
For these cases, adjust the band length by turning the plastic screw with
an M4 hex wrench. (Fig. V)
Do not overtighten the plastic screw. It will break
the plastic band. Release the hook before adjusting.
(red dot)
(Fig. U)
How To Adjust Cable Tension
(Fig. V)
Required Tool : 8mm Spanner (not included) x 2
4mm Hex
If you cannot shift at L or H position, it's time to adjust the cable tension.
1) Set the remote shifter lever at "H" position and straighten the cable.
2) Pull off the black plastic cap on foot of the cable, then the adjusting
screw with two lock nuts will appear.
3) While pushing the outer cable toward the shifter, push the adjusting
screw to the outer cable.
4) Turn the left side lock nut until it touches the Mag unit. You should
not overtighten the nut, otherwise you won't be able to set the shifter
at "L" position.
You must release the
hook for adjusting screw.
Adjust Screw
Lock Nut x 2
5) Turn the right side lock nut until it touhes the left side nut, then twist
the nuts each other to be locked as the method of "Double Nut".
(Fig. W)
6) Put the plastic cap over the screw again.
Turn the nut and tighten
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