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KTM 85 SX 2011 - User Manual

KTM 85 SX 2011
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KTM-Sportmotorcycle AG
A–5230 Mattighofen
www.ktm.com
KTM Group Partner
6/2010 FOTO: MITTERBAUER
85 SX
105 SX
OWNER’S MANUAL 2011
3211595en
*3211595en*
3211595en

Table of Contents

Questions and Answers

  • M
    Melissa VegaNov 16, 2025
    How to fix a KTM 85 SX 2011 Motorcycle engine that fails to start?
    • S
      samantha62Nov 16, 2025
      If your KTM Motorcycle engine won't start, it could be due to several reasons. Old fuel may be in the float chamber, or the fuel supply might be interrupted. The electrode distance could be too great, the plug fouled, or the ignition wire damaged. A faulty kill button, loose ignition cable connectors, a weak spark, or water in the carburetor could also be to blame. To resolve this, open the fuel tap and replenish the fuel, avoiding the choke. If the motorcycle hasn't been used for over a week, drain the fuel from the float chamber and fill it with fresh fuel. If there is an interruption in the fuel supply, close the fuel tap, loosen the fuel hose at the carburetor, and check for fuel flow. Clean the carburetor if necessary, or check the tank ventilation. You may also need to reduce the ele...

Summary

Important Information

Safety Precautions for Young Riders

Parental responsibility and fundamental safety precautions.

Important Information for Parents About Safe Driving

General Tips and Warnings for Starting the Motorcycle

First Ride Instructions and Preparation

Key steps before a young rider's initial experience on the bike.

Driving Instructions

Pre-Ride Checks and Maintenance Measures

Essential checks before operating the vehicle.

Braking, Stopping, and Refueling

Proper braking, stopping, and fuel handling procedures.

Maintenance Work on Chassis and Engine

Steering Head Bearing Adjustment

Procedure to check and adjust steering head bearing play.

Shock Absorber Spring Preload

Procedure to adjust the rear shock absorber spring preload.

Basic Suspension Setup for Rider Weight

Importance of adjusting suspension for rider's weight.

Determining Static Sag of Shock Absorber

Method to measure static sag for rear suspension.

Determining Riding Sag of Shock Absorber

Method to measure riding sag for rear suspension.

KTM Disc Brake Information

Details on brake calipers, fluid, and disc specifications.

Checking and Refilling Front Brake Fluid

Procedure for checking and topping up front brake fluid.

Inspecting Front Brake Pads

How to check the wear on front brake pads.

Replacing Front Brake Pads

Steps for replacing the front brake pads.

Checking Rear Brake Fluid Level

How to check the rear brake fluid level.

Refilling Rear Brake Fluid Reservoir

Procedure for refilling the rear brake fluid.

Inspecting Rear Brake Pads

How to check the wear on rear brake pads.

Trouble Shooting

Engine Starting and Running Issues

Diagnosing and fixing problems like failure to start or idle.

Engine Power and Performance Issues

Troubleshooting low power, misfiring, sputtering, and overheating.

KTM 85 SX 2011 Specifications

General IconGeneral
Engine TypeSingle-cylinder, 2-stroke
Displacement84.9 cc
Transmission6-speed
CoolingLiquid-cooled
Rear SuspensionWP Monoshock
Front BrakeDisc brake
Rear BrakeDisc brake
StarterKick starter
LubricationPremix
Fuel SystemCarburetor
Front SuspensionInverted fork, 43 mm
Front Tire70/100-17
ClutchWet multi-disc
FrameSteel
Rear Tire90/100-14

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