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To demonstrate the fitting process we have filmed using one of our car roof demonstration stands. Obviously there is a difference in height but it is actually easier fitting to the roof of a vehicle than to this stand, as long as you follow the instructional information provided.
Straight out of the box the wheel holders aren’t attached to the carrier. Loosen the main wing nut and restraining nut on both wheel holders and slide them onto the wheel tray making sure to follow the same orientation as the fitting instructions for both.
Now fit the end cap that comes with the fitting kit (092441). This usually takes a few short sharp taps with the palm of your hand to fit in the end of the wheel tray. Alternatively you can use a plastic mallet to gently tap the end cap into place
To fit the Atera giro AF to aero roof bars, you will need to use the three T-track bolts (093566) provided with the fitting kit as well as the three small springs (092451) and three washers (087582) instead of the steel roof bar brackets (093797).
It is easier to loosely attach the T-track fittings to the bike carrier before fitting to the roof bars. To do this, place the springs onto the T-track bolts and then place the washers on top of the springs. Insert two of these into the central hole on either side of the base plate for the A-frame. Then attach two plastic handles to each bolt, one of which will have a lock built in. Make sure to attach the handle with the lock to the outer edge of your vehicle, to make locking the carrier easier once fitted.
Then take the remaining T-track bolt, spring and washer and insert into the central hole of the sliding base plate. Attach the remaining plastic handle and remember to keep all three loose for now.
Remove or open the end cap covers of your roof bars and slide the T-track bolts into the top slot of the roof bars (T-track slot). In the video above we have demonstrated this on a demo stand but it’s actually easier to do this on a set of roof bars fitted to a car because you can see the T-track slot clearly.
Once on the roof bars, slide the carrier into position. If you are mounting just one bike its usually easier to keep the bike to the edges of the roof to make it easier for loading and unloading your bike.
Once in position, tighten the locking plastic handle and T-track bolt hand tight (5NM). Then unlock the handle and push down. The lock barrel should engage the hole in the base plate allowing the handle to sit flush to the base plate. Lock this handle and remove the keys. Now tighten the other two locking plastic handles and T-track bolts hand tight making sure the plastic handles sit flat and flush to the base plates.
Now lift the A-frame to a 45 degree angle and it should hold itself in that position. If not, use the 4mm allen key provided and make a slight tightening adjustment to both bolts at the base of the A-frame (087836). This may be required after frequent use over a long period of time.
Unlock the ratchet strap on each wheel holder and clip into each of the holding slots. Keep both wheel holders relatively central because these can be slid into place once the bike is attached.
Take the keys and unlock the A-frame. Open the A-frame clamping handle by twisting 3-4 turns and pull down all the way. Let go and the clamping handle should stay in that position.
Now lift your bike and place on the carrier. We suggest lifting with one hand on the main frame and the other on one of the front forks. Always remember to bend your knees when lifting to avoid injuring your back. When lifting onto a car roof, it can be easier to lift the bike to a horizontal position to engage both bike wheels into the wheel tray, its then just a matter of pushing the bike into the vertical position which can be easier than going straight for the vertical position, it all depends on what you are comfortable with.
Now sit the main frame of your bike into the top of the Giro’s A-frame. Keeping one hand on the bike use the other hand to close the clamping handle by twisting 3-4 turns in the opposite direction too before. Once you have checked that the clamping handle is secure around the bike frame, you can lock the handle and let go of the bike.
With the wheel holders still loose, you can now slide these into place flush against each wheel. Once in place, tighten both wheel holder wing nuts until hand tight (5NM) and attach the wheel strap around the wheel and into the ratchet clip.
The carrier is now ready to use.
Please make sure that before every journey to check all fixings are secure before setting off.
the Giro AF fits oval down tubes from 80mm to 100mm, and round tubes from 22mm to 80mm diameter.
This video is not a substitute for the manufacturers instructions included within this product.