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Maintenance

There is almost nothing unique about the care and maintenance of your USAC STERNER relative 
to that of any high-quality bicycle.  We highly recommend the informative website of 
Sheldon Brown for general matters of bicycle care and maintenance:

http://www.sheldonbrown.com/articles.html

WARNING

: Many bicycle service and repair tasks require special skills, 

knowledge, and tools.  Do not begin any service or maintenance tasks on your 
bicycle if you have any concerns about your ability to complete them correctly. 
Improper adjustment or service may result in damage to the bicycle and/or in 
an accident which could cause serious injury or death.

Maintenance Check List

In order to keep your USAC STERNER in top condition you should run a thorough maintenance 
check frequently.  This will ensure a longer component life and will maintain the riding ease 
of your USAC STERNER.

General inspection should be done before each ride as follows:

1. Check for loose nuts and bolts. 
2. Check for fork and frame damage. 
3. Inspect brake pads for wear and replace when necessary. 
4. Check for proper brake alignment. 
5. Check for any worn or damaged parts and replace. 
6. Look for loose spokes on the wheels.  Check tires for glass, thorns or any other 
sharp objects. 
7. Check that all quick-release levers are securely fastened. 
8. Make sure both wheels are properly aligned. 
9. Keep the dérailleur in adjustment. Do not let the bike rest or fall on the dérailleur.
10. Keep tires inflated to pressure indicated on the tire wall.

Finish protection and maintenance

A damp cloth may be used to clean your bike.  Avoid using aggressive cleaning solutions or 
solvents.  Plain water, or dish soap and water work well.

The aluminum and steel used in your USAC STERNER is resistant to corrosion in most 
conditions; however, certain extreme environments such as ocean-side locations may cause 
oxidizing.  We recommend either maintaining a coat of wax or periodic polishing with a 
non-abrasive pad (e.g., typical plastic dish cleaning pad).

Prolonged exposure to ultraviolet light will cause a color shift in anodized surfaces.  We 
recommend storing your USAC STERNER away from direct sunlight.

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Summary of Contents for STERNER BIKE

Page 1: ...reduce the risk of injury IMPORTANT NOTE In many of the subsequent warnings in the manual we mention a risk of loss of control or falling Please understand that those events could lead to very serious injury or death Because any loss of control or fall could result in serious injury or death we do not repeat the warning of injury or death whenever we mention the risk of loss of control or falling ...

Page 2: ...alloy display LCD display suspension nil throttle yes brake lever Wuxing cut off brake lever E range 25 Miles PAS range 40 Miles max speed 15 MPH weight 35 LB not including battery Max Load 250 LB warranted battery 1 year motor 2 year All range and speed are subject to road condition 300W brushless YLP disc brake also Taiwan brand other electric components are 2year such as controller display brak...

Page 3: ...our bicycle before every ride Make sure all fasteners are securely tightened Verify that your front and rear brakes are functioning properly before each ride Verify that all QR quick release levers on your bicycle are fully tightened and in the closed position Maintain adequate tire pressure Never hitch a ride on another vehicle If you must ride in the dark Ensure the reflectors on the bicycle are...

Page 4: ...lroad tracks stairs ditches or other such rough conditions Failure to do so may result in tire failure loss of control or other mechanical failures and may result in a serious or fatal accident WARNING Do not remove the reflectors from your bicycle They are an integral part of the bicycle s safety system Removing the reflectors may reduce your visibility to others using the roadway Being struck by...

Page 5: ...heck for fork and frame damage 3 Inspect brake pads for wear and replace when necessary 4 Check for proper brake alignment 5 Check for any worn or damaged parts and replace 6 Look for loose spokes on the wheels Check tires for glass thorns or any other sharp objects 7 Check that all quick release levers are securely fastened 8 Make sure both wheels are properly aligned 9 Keep the dérailleur in adj...

Page 6: ...www usacworld com Pinch Points Safety 1 Second Folding and Unfolding Folding Unfolding www usacworld com Page 6 of 12 ...

Page 7: ...ll packing material and cut the cable ties used to secure the STERNER during shipping Unfold the STERNER and place it on a flat level surface Seat Post Installation Loosen both seat post QR levers Slide the seat post into the frame Tighten both QR levers To verify that a clamp is tight release the other clamp and check that the seat can not be easily twisted relative to the frame Fitting Your USAC...

Page 8: ... personal preference You do this by loosening the single bolt under the saddle with a 6mm hex key Once this bolt is loose you should be able to rotate the saddle and slide it fore aft to provide the best comfort Once you have adjusted the seat position be sure to tighten this bolt WARNING After saddle adjustment be sure to tighten the saddle clamp bolt before riding A loose saddle clamp could caus...

Page 9: ...nd rear brakes The right brake lever is for the rear brake The left brake lever is for the front brake Generally you should apply both brake levers gradually to stop WARNING Sudden or excessive application of the front brake may pitch the rider over the handlebars causing serious injury or death WARNING In wet weather conditions you will need to increase the distance needed to stop safely Anticipa...

Page 10: ...e front brake lever is mounted on the left side of the handlebar The rear brake lever is mounted on the right side of the handlebar Brakes require occasional adjustment due to cable stretch and brake shoe wear The brake lever should have very little free play and should start closing the calipers as soon as lever action begins 1 Loosen the locknut on the adjusting barrel 2 Turn the cable adjusting...

Page 11: ...heel does not remain true this indicates that the spokes are loose We recommend that spoke adjustments be performed by a professional bicycle mechanic Collisions Your USAC STERNER bike is designed to withstand years of normal riding However collisions can substantially weaken the structure of the bicycle If you accidentally have a minor collision with a curb wall or other fixed object inspect the ...

Page 12: ...ranty does not apply to normal wear and tear including wear of tires brake pads and cables This limited warranty does not apply to paint finish or components attached to the bicycle such as front forks wheels drivetrain brakes seatpost handlebar and stem all of which are covered under the one year limited warranty above Damage caused by stunt riding off road riding racing collisions or other abusi...

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