2014 KTM 125/150/250 SX & 150/250/300 XC Owner's Manual (P/N 3213030en)

This KTM owner's manual (Art. no. 3213030en) covers the 2014 125/150/250 SX EU and USA, 150 XC USA, and 250/300 XC EU/USA models, with operating instructions, maintenance, adjustments, and selected repair procedures.

Supplied as one 135-page PDF in English.

• Suspension and steering: Fork-leg bleeding, fork and shock absorber removal and installation, steering head bearing adjustment, and chassis setup for rider weight.

• Brakes and final drive: Front and rear brake lining replacement, disc inspection, wheel removal and installation, chain wear checks, and chain tension adjustment.

• Hydraulic clutch: Fluid-level checks, fluid replacement, and bleeding, with separate illustrations for the 125/150 models, 250 SX, and 250/300 XC.

• Engine tuning: Keihin PWK idle adjustment, float chamber draining, Kokusan ignition-curve selection, and auxiliary spring changes on the 250/300 models.

• Intake, exhaust, and cooling: Air filter servicing, main silencer glass fiber yarn replacement, coolant changes, and temperature-dependent radiator cover selection for SX models.

• Electrical system: Battery removal, installation, and charging, plus main fuse replacement for the electric-start 250/300 XC models.

• Troubleshooting and specifications: Fault/cause/action tables, separate SX and XC maintenance schedules, engine and chassis torque tables, fluid capacities, and component wear limits.

Owners can use this manual for operation and routine checks; KTM assigns the marked specialist service and repair work to an authorized workshop.

SX/XC Suspension and Chassis Setup

The chassis sections distinguish the WP 4860 MXMA CC forks on SX models from the WP 4860 4CS forks on XC models. They explain the XC fork's separate compression and rebound legs, with different setup tables for EU and USA SX versions.

Static and riding sag illustrations accompany rider-weight spring selection, preload, and compression/rebound damping settings for the WP 5018 BAVP DCC shock. These model-specific references help match the suspension baseline to the actual machine before adjustments are made.

Lower triple clamp assembly illustrations show the steering bearing arrangement. The spring-preload procedure identifies hook wrench T106S. Properly support the motorcycle on a sturdy lift stand before wheel or suspension work.

Carburetor and Engine Characteristics

The carburetor data separates Keihin PWK 38S AG units on the 125/150 SX from PWK 36S AG units on the 250 SX and XC models. Altitude/temperature jetting charts are provided for each covered model group; the regular charts exclude sand, while the SX models have separate sandy-surface settings.

The carburetor operating-range diagram explains idle, transition, part-load, and full-load circuits. Ignition coverage describes the Soft and Performance settings, while the 250/300 engine sections identify the yellow, green, and red auxiliary springs and their different response characteristics.

Clutch, Brake, and Final-Drive Service

Clutch fluid requirements differ: the 125/150 models use hydraulic oil, with Motorex Hydraulic Fluid 75 listed, while the 250/300 models use DOT 4 or DOT 5.1 brake fluid. The bleeding procedures identify syringe 50329050000.

Brake coverage includes lever free travel and pad/disc wear checks. The fluid notes flag silicone DOT 5 as incompatible with the brake seals and lines. The chain section explains how excessive tension can overload transmission bearings and, in extreme cases, break the countershaft.

Intake, Cooling, and Fault Finding

Airbox sealing and filter installation are covered alongside difficult-condition preparation for sand, mud, heat, and snow. A main silencer assembly illustration shows the glass fiber packing arrangement; the accompanying text explains how packing loss changes noise and engine response.

Cooling coverage separates the SX radiator covers from the coolant-level, antifreeze, draining, and refilling procedures. Fuel tap operation distinguishes the XC reserve setting from the SX tap.

Troubleshooting tables address starting faults, poor idle, low power, overheating, and water in the gear oil. Electrical coverage centers on the XC battery, starter-relay fuse, and symptom-based checks; wiring diagrams are not included.

Service References and Repair Scope

The technical data distinguishes the five-speed 250 SX gearbox from the six-speed gearboxes in the other covered models. It also provides engine settings, fastening torques, suspension data, and Motorex fluid references.

Major engine work appears in the service schedules, but internal engine and transmission teardown or overhaul instructions are outside this owner's manual's scope.

PDF Search and Navigation

The page total includes 132 numbered pages, the front cover, one blank page, and the back cover; no separate supplement is added. Embedded bookmarks cover chapters and subsections. Main text and technical specification tables support text search, but the six carburetor tuning matrices are embedded images; their small entries benefit from zooming.