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Congratulations on the purchase of your PROTOTYPE product.
Please read the following instructions. If you have any doubt regarding your mechanical ability and/or installation of this product.
Visit your local authorized dealer or technical center. A correct installation and maintenance will extend your product life time.
Improper assembly or use may result in serious injury or death, PROTOTYPE assumes no responsibility for malfunction or injury due
to faulty installation or maintenance
Before you start
-Inspect the parts, make sure it has no defect. Make sure you have all the necessary tools. Verify that the handlebar diameter corresponds to
the stem’s clamp diameter 31,8mm. Make sure that the stem clamp surface is free of any sharp edges.
Introduction
Installation
MANUAL DE INSTRUCCIONES
WARRANTY
Prototype products have been developed and manufactured with
great care and precision, they are submitted to demanding tests
Prototype products are guaranteed for 2 years against any
manufacturer defects or defective materials. If you make the
product Physis registration within 7 days after the purchasing date
on the website www.prototype.pt, you get a warranty extension for
another 2 years. PROTOTYPE does not cover the labor costs
associated with removing the product from the bicycle, and
preparing the shipment. The defective product must be claimed to
the same authorized dealer you purchased it from. Prototype
guarantee only applies to claims made by the first owner, who must
present the purchase receipt or invoice. If you have any question
about your prototype products please contact us, sales@proto-
type.pt or visit www.prototype.pt. Each handlebar is identified with
a serial number and production code.
CAUTION
Make sure that all components are in proper conditions before using. All
the parts have a functional lifetime. As preventive measures we
recommend to check and if necessary replace the components directly
related to safety (fork, stem, handlebars, brakes, tires).
Maintenance
Make sure that the handlebar doesn’t slip on stem.
Make sure that your shifters/brakes and grips doesn’t slip on the handlebar.
Make sure that your handlebar rotates freely 90º for each side.
Tighten the front wheel between your knees and force the handlebar testing its grip,
the handlebar should not rotate independently of the wheel.
Safety check
Make sure the stem bolts are tight and in good conditions
Wash your handlebar only with soap and water.
Inspect components, looking for possible signs of damage or fatigue (cracks, deep
scratches, noises, distortions ...). Should be particularly cautious after any fall or
accident. Never attempt to repair parts. If you doubt the integrity of your component
look for a PROTOTYPE agent.
1- Clean all contact zones with between stem handlebar.
Do not lubricate the stem clamp and handlebar surface. It is important that the
contacting surfaces be abrasive enough for a secure grip. The use of friction paste is
strongly recommended.
2 Place the handlebar (A) between the stem body (B) and the stem frontal plate (C).
Tight the frontal plate bolts until reach a light clamp force on the handlebar, tight
the bolts evenly, use small increments while making sure that the gap between stem
body and frontal plate is absolutely equal in the four bolts. Use the handlebar marks to
center and adjust the angle to desired position.
Using a torque wrench with an appropriate hex key, tight the frontal plate bolts, in
one-turn increments and in rotation, to the recommended torque. Use a cross pattern
tightening sequence (1-4-2-3).
Torque values (N) are the maximum torque allowed, not the recommended torque.
Start with a lower torque and check if the connection is tight enough. If necessary
increase the tightening torque or apply friction paste, do not exceed the maximum
torque. The use of friction paste reduces the amount of necessary clamp torque and
prevents risk of rupture. Insufficient tightening can cause serious injury or death.
Adjust the width, only if necessary, use the lines at the end of the handlebar as
reference and cut the handlebar to the desired width. Use the same reference mark on
each side.
The assembly of the brake levers and shifters must be done carefully. Make sure that
are free of sharp edges. If necessary remove them with a thin sand paper. Remember,
this parts should be tighten with the minimal torque to operate. Normally 2-3 Nm /
18-26 in.lbs. Please check the manual of each part and follow the instructions of each
manufacturer.
FRICTION
PASTE
GREASE
Serial Number
Lines cut
MTB HANDLEBAR
!
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