Kettler racer gt, hks selection problem - after about 5 mins of biking, a repeating noise starts coming from the paddle block (like an old train)))

Check batteries.

Try emailing the parts department at Kettler USA: Kettler USA online shopping for tricycles pedal tractors ellipticals...

I used to have to contact them when I repaired Kettlers at the bike shop.

Most questions like tghis find answers on search engines...

"Kettler Ergo Racer user manual pdf" ;eads to...

http://kurser.iha.dk/eit/eit-lab/Bike_autopilot_website/Ergoracer_Car_Simulator_User_Guide_And_Tehcnical_Documentation.pdf

from
http://access.kettlerusa.com/retail/manuals/fitness/crosstrainers/7653-309.A.pdf
you'll find that -------------- The computer calculates and assesses the difference between load pulse and recovery pulse and your resulting "fitness value" on the basis of the following formula:
Note ( F ) = 6 - (10 x ( P1 - P2 )/P1)^2
P1 = load pulse P2 = recovery pulse Value 1 = very good Value 6 = unsatisfactory The comparison of load and recovery pulse is a simple and fast method to control your physical fitness. The fitness value is a value of orientation with regard to your ability to recover after physical load. Before you press the recovery pulse button and have the computer calculate your fitness value you should train in your load range for a longer time, this means for at least 10 minutes. With regular cardiovascular training you will notice that your "fitness value" will improve --------------

Locate where the noise is coming from, chances are the bearings have gone bad go to Kettler fitness.com they have contact info on their web site.

I have no reference for that bike but if was bought in U SA contact them @ KETTLER International Inc.
P.O. Box 2747
Virginia Beach, VA 23450 USA Tel (757)427-2400 Fax (757)427-0183 Email [email protected]
Or www.kettler.co.uk Customer Services [email protected]
Tel: 01527 588995 AfterSales [email protected]
Tel: 01527 591901 - select Option 1

check the barrings if you can and lube it

i would check the wireing

ok mate you have to go to a bike shop and buy a the newer tubes the one your daughter has is really old and they dont make them any more so just go to a bike shop and ask for a bike tube and then ther you go also if ya need any help putting it on just give us a bell. and dont forget to rate me .

http://www.kettler.at/fileadmin/user_upload/Homepage/Service/Montageanleitungen/KETTLER-Kadett_7977-900.pdf
Try this address. there is usually manuals at the company homepage.