Motorcycle Overview

The 2009 KTM 690 SMC represents the peak of KTM's single-cylinder supermoto engineering, a machine that combined a proven 654cc LC4-derived engine with 17-inch street-oriented wheels, aggressive supermoto geometry, and race-bred WP suspension. By 2009, the LC4 was well into its fourth decade of evolution, having transformed from the air-cooled, kickstart-onlyRotax 640 single of the late 1980s into a modern 654cc SOHC four-valve liquid-cooled engine with electronic fuel injection (Keihin EMS) and electric starting. The fuel injection calibration delivered approximately 60-65 horsepower at the rear wheel, and the engine's 63.7kg weight (dry) meant the power-to-weight ratio was genuinely exhilarating.

The chassis was a chrome-molybdenum steel trellis frame with a bolt-on aluminum rear subframe, delivering a claimed wet weight of under 145kg. WP suspension featured a 48mm inverted front fork with adjustable rebound and compression damping and 250mm of travel, paired with a WP monoshock that also offered full adjustability. Braking was handled by a 300mm front disc with a radial-mount four-piston caliper and a 240mm rear disc. Wheels were 17-inch cast aluminum with a 120/70-ZR17 front tyre and 160/60-ZR17 rear.

Single-cylinder motorcycles demand specific maintenance attention: valve clearance checks (the LC4 is known for tight valve clearance, especially exhaust), oil service interval discipline (the engine shares its oil with the gearbox, so degradation from gear shear means changes should not be delayed), and chain maintenance (the power pulses from a large single accelerate sprocket and chain wear). This service manual provides complete factory-level procedures for every system on the motorcycle.

Service & Repair Scope

• Valve Service - Valve clearance inspection on the SOHC four-valve head (shim-under-bucket method requiring camshaft removal); shim measurement and replacement; intake and exhaust valve clearance specifications; camshaft lobe wear inspection; camshaft journal clearance; cam chain tensioner removal and function test; timing verification marks
• Engine Maintenance - Engine oil change with specified viscosity and capacity (shared oil with gearbox, approximately 1.5L dry fill); oil filter replacement; oil screen cleaning; spark plug inspection and gap; valve cover gasket replacement
• Engine Mechanical - Cylinder head removal with bolt sequence; head gasket inspection; cylinder piston removal; piston ring end-gap measurement; cylinder bore measuring (Nikasil-coated cylinder wall -- plating condition is critical); big-end bearing clearance inspection; crankshaft run-out measurement; crankcase split for crankshaft removal; oil pump removal and inspection
• Fuel Injection - Keihin EMS diagnostics; throttle body inspection and cleaning; idle speed adjustment; throttle position sensor calibration; fuel injector removal, flow test, and replacement; fuel pump in-tank unit inspection; fuel pressure regulator test; fuel filter service; air filter replacement; airbox drain tube inspection
• Exhaust - Exhaust system removal/installation; header gasket replacement; catalytic converter inspection; exhaust mounting hardware torque specification
• Cooling System - Coolant flush procedure with correct antifreeze type; water pump shaft seal condition (common leak point); impeller inspection; thermostat removal and opening temperature test; radiator cap pressure test; cooling fan switch test
• Clutch - Clutch pack inspection (plate wear and warpage); basket notch inspection and bearing assessment; clutch spring free-length measurement; clutch slave cylinder seal replacement; hydraulic clutch fluid bleed procedure
• Transmission - Gearbox removal; gear dog engagement inspection; shift fork and shift fork rail inspection; shift drum inspection; transmission oil seal replacement; kick-starter mechanism (if equipped) inspection of one-way clutch and spring
• Chassis & Frame - Steering head bearing play inspection and adjustment; steering head bearing nut torque; swingarm pivot bearing service; rear subframe bolt inspection (aluminum-to-steel interface corrosion check); engine mounting bolt torque specification and threadlocker application
• Front Suspension - WP 48mm fork oil replacement (oil level and viscosity); fork seal replacement; lower leg bushing inspection; cartridge inspection; fork spring free-length measurement; rebound and compression damping adjustment specification
• Rear Suspension - WP monoshock spring preload measurement; rebound and compression damping calibration; shock seal inspection; linkage bearing inspection (bearings, seals, spacers) -- critical service item; dog-bone and bellcrank inspection
• Brakes - Front brake pad replacement; front and rear disc thickness measurement against minimum; brake fluid flush (DOT 4 or DOT 5.1); front caliper rebuild; rear caliper removal and rebuild; master cylinder seal replacement; brake hose inspection
• Wheels & Tyres - Tyre removal and installation (cast alloy wheel care); wheel bearing removal and replacement; spoke tension measurement (cast wheels -- spoke integrity inspection); rim damage assessment; wheel balance; chain and sprocket wear limits; final drive gear replacement
• Steering & Controls - Handlebar clamp bolt torque; throttle cable free play adjustment; clutch lever adjustment; brake lever and pedal adjustment; footpeg pivot and spring inspection
• Electrical - Regulator/rectifier output testing; stator resistance measurements; battery specification and testing; CDI/ECU replacement (Keihin EMS unit); complete wiring diagram with color codes; fuse location and circuit descriptions; headlight bulb replacement; turn signal and tail light testing; starter relay and solenoid check
• Bodywork - Fairing and tank shroud removal; fuel tank removal and mounting; seat removal and latch; radiator shroud replacement; number plate removal; fender installation

Technical Specifications

• Engine: 654cc SOHC four-valve single, liquid-cooled, bore x stroke specific
• Power: approximately 60-65 HP at the rear wheel
• Valve clearances: intake and exhaust specifications (cold); shim sizes
• Oil capacity: approximately 1.5L; viscosity: 10W-50 (full synthetic recommended)
• Spark plug: NGK or equivalent, gap specification
• Fuel system: Keihin EMS electronic fuel injection, throttle body size, injector specification
• Clutch: wet multi-disc; plate minimum thickness; basket inside diameter and notch depth limits
• Gearbox: 6-speed; gear ratios specified by gear; final drive sprocket sizes (standard 15T front, 45T rear)
• Front suspension: WP 48mm inverted fork, oil volume specification, spring free-length
• Rear suspension: WP monoshock, travel 250mm, spring rate and preload
• Brakes: front disc 300mm min thickness; rear disc 240mm min thickness; DOT 4/5.1 fluid
• Tyres: 120/70-ZR17 front, 160/60-ZR17 rear; pressures: 32 psi F, 34 psi R (solo)

Diagnostic Information

The manual includes Keihin EMS fault code retrieval via the diagnostic connector, with code definitions covering sensor faults (TPS, MAP, IAT, ECT, oxygen sensor), injector circuit, and fuel pump issues. Engine compression testing specifies minimum pressure and acceptable cylinder variance (though a single-cylinder has no inter-cylinder comparison, baseline minimum is critical). Valve clearance diagnostic procedure with feeler gauge measurement. Charging system diagnosis with stator output testing (AC voltage phase-to-phase at specified RPM) and regulator output (DC voltage at battery at idle and 5,000 RPM). Overheat diagnosis including water pump impeller wear inspection and thermostat bench test. Electrical fault trees for non-start conditions (kill switch, ignition switch, starter relay, ECU power).

Illustrations & Diagrams Included

Engine exploded assembly with torque specifications and bolt identification; cylinder head sectional view showing SOHC camshaft arrangement, rocker arms, and valve train; throttle body cutaway; Keihin EMS component identification and wiring harness diagram; chassis and frame exploded view; WP fork sectional with oil level specification; WP monoshock section; brake caliper and master cylinder exploded view; full wiring schematic with connector pinouts; fuel system flow diagram; exhaust mounting detail; body panel attachment points.

Compatibility

This service manual covers the 2009 KTM 690 SMC. Much of the content also applies to the 2008-2010 KTM 690 SMC production run, as well as the 690 Enduro and 690 R models of the same era, since they share the LC4 engine platform and chassis architecture. Specific differences in gearing, suspension calibration, and body components between SMC and Enduro variants should be noted.

File Properties

• Format: Searchable PDF with full-text search and bookmarked chapter navigation
• Language: English
• Delivery: Instant digital download after purchase
• Access: 24/7 availability from any internet-connected device
• Printing: High-resolution output suitable for individual pages or full chapter printing

Motorcycle Overview

The 2009 KTM 690 SMC represents the peak of KTM's single-cylinder supermoto engineering, a machine that combined a proven 654cc LC4-derived engine with 17-inch street-oriented wheels, aggressive supermoto geometry, and race-bred WP suspension. By 2009, the LC4 was well into its fourth decade of evolution, having transformed from the air-cooled, kickstart-onlyRotax 640 single of the late 1980s into a modern 654cc SOHC four-valve liquid-cooled engine with electronic fuel injection (Keihin EMS) and electric starting. The fuel injection calibration delivered approximately 60-65 horsepower at the rear wheel, and the engine's 63.7kg weight (dry) meant the power-to-weight ratio was genuinely exhilarating.

The chassis was a chrome-molybdenum steel trellis frame with a bolt-on aluminum rear subframe, delivering a claimed wet weight of under 145kg. WP suspension featured a 48mm inverted front fork with adjustable rebound and compression damping and 250mm of travel, paired with a WP monoshock that also offered full adjustability. Braking was handled by a 300mm front disc with a radial-mount four-piston caliper and a 240mm rear disc. Wheels were 17-inch cast aluminum with a 120/70-ZR17 front tyre and 160/60-ZR17 rear.

Single-cylinder motorcycles demand specific maintenance attention: valve clearance checks (the LC4 is known for tight valve clearance, especially exhaust), oil service interval discipline (the engine shares its oil with the gearbox, so degradation from gear shear means changes should not be delayed), and chain maintenance (the power pulses from a large single accelerate sprocket and chain wear). This service manual provides complete factory-level procedures for every system on the motorcycle.

Service & Repair Scope

• Valve Service - Valve clearance inspection on the SOHC four-valve head (shim-under-bucket method requiring camshaft removal); shim measurement and replacement; intake and exhaust valve clearance specifications; camshaft lobe wear inspection; camshaft journal clearance; cam chain tensioner removal and function test; timing verification marks
• Engine Maintenance - Engine oil change with specified viscosity and capacity (shared oil with gearbox, approximately 1.5L dry fill); oil filter replacement; oil screen cleaning; spark plug inspection and gap; valve cover gasket replacement
• Engine Mechanical - Cylinder head removal with bolt sequence; head gasket inspection; cylinder piston removal; piston ring end-gap measurement; cylinder bore measuring (Nikasil-coated cylinder wall -- plating condition is critical); big-end bearing clearance inspection; crankshaft run-out measurement; crankcase split for crankshaft removal; oil pump removal and inspection
• Fuel Injection - Keihin EMS diagnostics; throttle body inspection and cleaning; idle speed adjustment; throttle position sensor calibration; fuel injector removal, flow test, and replacement; fuel pump in-tank unit inspection; fuel pressure regulator test; fuel filter service; air filter replacement; airbox drain tube inspection
• Exhaust - Exhaust system removal/installation; header gasket replacement; catalytic converter inspection; exhaust mounting hardware torque specification
• Cooling System - Coolant flush procedure with correct antifreeze type; water pump shaft seal condition (common leak point); impeller inspection; thermostat removal and opening temperature test; radiator cap pressure test; cooling fan switch test
• Clutch - Clutch pack inspection (plate wear and warpage); basket notch inspection and bearing assessment; clutch spring free-length measurement; clutch slave cylinder seal replacement; hydraulic clutch fluid bleed procedure
• Transmission - Gearbox removal; gear dog engagement inspection; shift fork and shift fork rail inspection; shift drum inspection; transmission oil seal replacement; kick-starter mechanism (if equipped) inspection of one-way clutch and spring
• Chassis & Frame - Steering head bearing play inspection and adjustment; steering head bearing nut torque; swingarm pivot bearing service; rear subframe bolt inspection (aluminum-to-steel interface corrosion check); engine mounting bolt torque specification and threadlocker application
• Front Suspension - WP 48mm fork oil replacement (oil level and viscosity); fork seal replacement; lower leg bushing inspection; cartridge inspection; fork spring free-length measurement; rebound and compression damping adjustment specification
• Rear Suspension - WP monoshock spring preload measurement; rebound and compression damping calibration; shock seal inspection; linkage bearing inspection (bearings, seals, spacers) -- critical service item; dog-bone and bellcrank inspection
• Brakes - Front brake pad replacement; front and rear disc thickness measurement against minimum; brake fluid flush (DOT 4 or DOT 5.1); front caliper rebuild; rear caliper removal and rebuild; master cylinder seal replacement; brake hose inspection
• Wheels & Tyres - Tyre removal and installation (cast alloy wheel care); wheel bearing removal and replacement; spoke tension measurement (cast wheels -- spoke integrity inspection); rim damage assessment; wheel balance; chain and sprocket wear limits; final drive gear replacement
• Steering & Controls - Handlebar clamp bolt torque; throttle cable free play adjustment; clutch lever adjustment; brake lever and pedal adjustment; footpeg pivot and spring inspection
• Electrical - Regulator/rectifier output testing; stator resistance measurements; battery specification and testing; CDI/ECU replacement (Keihin EMS unit); complete wiring diagram with color codes; fuse location and circuit descriptions; headlight bulb replacement; turn signal and tail light testing; starter relay and solenoid check
• Bodywork - Fairing and tank shroud removal; fuel tank removal and mounting; seat removal and latch; radiator shroud replacement; number plate removal; fender installation

Technical Specifications

• Engine: 654cc SOHC four-valve single, liquid-cooled, bore x stroke specific
• Power: approximately 60-65 HP at the rear wheel
• Valve clearances: intake and exhaust specifications (cold); shim sizes
• Oil capacity: approximately 1.5L; viscosity: 10W-50 (full synthetic recommended)
• Spark plug: NGK or equivalent, gap specification
• Fuel system: Keihin EMS electronic fuel injection, throttle body size, injector specification
• Clutch: wet multi-disc; plate minimum thickness; basket inside diameter and notch depth limits
• Gearbox: 6-speed; gear ratios specified by gear; final drive sprocket sizes (standard 15T front, 45T rear)
• Front suspension: WP 48mm inverted fork, oil volume specification, spring free-length
• Rear suspension: WP monoshock, travel 250mm, spring rate and preload
• Brakes: front disc 300mm min thickness; rear disc 240mm min thickness; DOT 4/5.1 fluid
• Tyres: 120/70-ZR17 front, 160/60-ZR17 rear; pressures: 32 psi F, 34 psi R (solo)

Diagnostic Information

The manual includes Keihin EMS fault code retrieval via the diagnostic connector, with code definitions covering sensor faults (TPS, MAP, IAT, ECT, oxygen sensor), injector circuit, and fuel pump issues. Engine compression testing specifies minimum pressure and acceptable cylinder variance (though a single-cylinder has no inter-cylinder comparison, baseline minimum is critical). Valve clearance diagnostic procedure with feeler gauge measurement. Charging system diagnosis with stator output testing (AC voltage phase-to-phase at specified RPM) and regulator output (DC voltage at battery at idle and 5,000 RPM). Overheat diagnosis including water pump impeller wear inspection and thermostat bench test. Electrical fault trees for non-start conditions (kill switch, ignition switch, starter relay, ECU power).

Illustrations & Diagrams Included

Engine exploded assembly with torque specifications and bolt identification; cylinder head sectional view showing SOHC camshaft arrangement, rocker arms, and valve train; throttle body cutaway; Keihin EMS component identification and wiring harness diagram; chassis and frame exploded view; WP fork sectional with oil level specification; WP monoshock section; brake caliper and master cylinder exploded view; full wiring schematic with connector pinouts; fuel system flow diagram; exhaust mounting detail; body panel attachment points.

Compatibility

This service manual covers the 2009 KTM 690 SMC. Much of the content also applies to the 2008-2010 KTM 690 SMC production run, as well as the 690 Enduro and 690 R models of the same era, since they share the LC4 engine platform and chassis architecture. Specific differences in gearing, suspension calibration, and body components between SMC and Enduro variants should be noted.

File Properties

• Format: Searchable PDF with full-text search and bookmarked chapter navigation
• Language: English
• Delivery: Instant digital download after purchase
• Access: 24/7 availability from any internet-connected device
• Printing: High-resolution output suitable for individual pages or full chapter printing