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KTM · Overhead-cam four-stroke single, dry sump, gearbox shares engine oil, chain drive

SMC 660

Library entry covers 2003-2011

47 factory 50 guideline

Published source

KTM 660 SMC 2005 owner's manual (art. no. 3.211.45), periodic maintenance schedule pp.18-19 (ManualsLib 3103690)

Factory source. Covers 2005 model (table header prints 660 SMC 2005); catalog row spans 2003-2011, other years may differ.

97 items for a 2006 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)
Engine cycle
Four-stroke
Engine lubrication
Dry sump (separate oil tank)
Oil filtration
Replaceable cartridge or spin-on filter
Valve gear
Overhead cam, screw/locknut adjusters
Ignition
Electronic (CDI / transistor / ECU)
Charging
Alternator / stator with rectifier
Battery
Wet cell (flooded lead-acid, needs topping up)
Fuel system
Single carburetor
Cooling
Liquid cooled
Primary drive
Gear or chain inside engine, shares engine oil
Gearbox oil
Shares engine oil
Clutch control
Hand lever, cable
Final drive
Chain
Front suspension
Telescopic fork
Rear suspension
Swingarm, single shock / cantilever
Front brake
Disc, hydraulic
Rear brake
Disc, hydraulic
Wheels
Cast / alloy, tubeless
Sidecar
No sidecar
Maintenance schedule

2006 KTM SMC 660

On the road: every 300 km

1 item
  • Check engine oil level
    Pre-ride / on the road
    Guideline

    Each fuel stop on old machines. Dry sump: check the tank hot, engine idling or just stopped, per your manual.

On the road: every 500 km

3 items
  • Check lights, horn, brake light switches
    Pre-ride / on the road
    Guideline
  • Check tire pressures
    Pre-ride / on the road
    Guideline
  • Lubricate drive chain
    Pre-ride / on the road
    Guideline

    Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 800 km

1 item
  • Check coolant level
    Pre-ride / on the road
    Guideline

On the road: every 1,000 km

1 item
  • Check chain slack and rear wheel alignment
    Pre-ride / on the road
    Guideline

Every 1,600 km or 6 months

1 item
  • Inspect tire tread, sidewalls and date codes
    Wheels and tires
    Guideline

Every 25 h or 2,500 km

1 item
  • Muffler glass-fiber packing (replace)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: every 2,500 km or 25 hours.

Every 5,000 km or 12 months

48 items
  • All screws and nuts (check tight)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Breather hoses (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Chassis screws (check tight)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Cooling system leaks and antifreeze (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Electrical system (check function)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Engine fastening screws (check tight)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Engine oil, oil filter and fine filter (change)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Exhaust system leaks and mounting (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • External engine screws (check tight)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Headlamp adjustment (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Idle setting (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Oil lines (check for damage and routing)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Oil screens and drain plug magnet (clean)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Radiator fan (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Spark plug (check and adjust)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Sprocket screws and locking (check)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Valve clearance (check and adjust)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Air filter and filter box (clean)
    Fuel and air
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Carburetor connection boots (check)
    Fuel and air
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Check throttle cable(s) free play and return
    Fuel and air
    Guideline
  • Clean fuel tap filter / sediment bowl
    Fuel and air
    Guideline
  • Clutch master cylinder fluid level (check)
    Primary and gearbox
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Chain (lubricate)
    Final drive
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Chain and chain guides (check)
    Final drive
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Clean drive chain thoroughly (remove and soak, re-lube)
    Final drive
    Guideline

    Non O-ring chains on old machines: remove, clean, soak in hot chain grease or lube, refit with the master link clip closed end leading.

  • Inspect chain and sprockets for wear (measure stretch)
    Final drive
    Guideline
  • Check steering head bearing adjustment
    Front end
    Guideline
  • Fork dust sleeves (clean)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Fork legs (bleed)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Inspect fork seals, stanchions and fork boots
    Front end
    Guideline
  • Shock absorber and fork (check for leaks and operation)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Steering head bearing (check and adjust)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Check footrests, pegs, rear brake and gear lever pivots
    Rear suspension and frame
    Guideline
  • Grease and check center / side stand and springs
    Rear suspension and frame
    Guideline
  • Shock absorber O-ring (check wear)
    Rear suspension and frame
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Swingarm pivot (check)
    Rear suspension and frame
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Brake fluid level, pad thickness and discs (check)
    Brakes
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Brake lines (check)
    Brakes
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Brake system screws (check tight)
    Brakes
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Check brake pads and discs
    Brakes
    Guideline
  • Hand and foot brake levers (check and adjust)
    Brakes
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Check wheel bearings for play
    Wheels and tires
    Guideline
  • Spoke tension and rim joint (check)
    Wheels and tires
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Tire condition and pressure (check)
    Wheels and tires
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Wheel bearings and cush drive (check)
    Wheels and tires
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Actuating cables (check, adjust, lubricate)
    Controls and cables
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). At the 1st service (1,000 km or 10 hours) and every 5,000 km or once a year.

  • Cables routing and damage (check)
    Controls and cables
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

  • Linkage lever (lubricate)
    Controls and cables
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Every 5,000 km or once a year.

Every 6,500 km or 12 months

2 items
  • Inspect, clean and gap spark plugs
    Engine
    Guideline
  • Adjust clutch free play, lubricate cable and lever pivot
    Primary and gearbox
    Guideline

Every 8,000 km or 12 months

2 items
  • Change engine oil
    Engine
    Guideline

    Pre-1970 machines: many owners run non-detergent or classic-spec oil with no filter, so short intervals matter. Dry sump: drain the tank and the crankcase/sump, flush the tank and clean the feed and return screens.

  • Replace oil filter
    Engine
    Guideline

Every 9,500 km or 12 months

8 items
  • Inspect coolant hoses and clamps
    Engine
    Guideline
  • Clean / inspect air filter
    Fuel and air
    Guideline

    Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.

  • Clean carburetor float bowl(s), check float level and jets
    Fuel and air
    Guideline

    Ethanol fuel varnishes old carbs quickly in storage.

  • Check charging voltage and regulator / cut-out
    Ignition and electrics
    Guideline
  • Check swingarm bushes for play
    Rear suspension and frame
    Guideline
  • Inspect rear shocks for leaks and damping
    Rear suspension and frame
    Guideline
  • Lubricate control cables and lever pivots
    Controls and cables
    Guideline
  • Lubricate speedometer / tachometer cables, check drive
    Controls and cables
    Guideline

    A dry speedo cable whips the needle and eventually kills the instrument.

Every 10,000 km

1 item
  • Spark plug (replace)
    Engine
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). Replace every 10,000 km.

Every 13,000 km or 2 years

1 item
  • Check and adjust valve clearances
    Engine
    Guideline

Every 16,000 km or 2 years

1 item
  • Compression test (or leak-down)
    Engine
    Guideline

Every 19,500 km or 2 years

3 items
  • Replace air filter element
    Fuel and air
    Guideline
  • Clean and grease rear suspension linkage
    Rear suspension and frame
    Guideline
  • Grease swingarm pivot
    Rear suspension and frame
    Guideline

Every 20,000 km or 2 years

2 items
  • Shock absorber (complete maintenance)
    Rear suspension and frame
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: every 2 years or 20,000 km.

  • Linkage lever (complete maintenance)
    Controls and cables
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: every 2 years or 20,000 km.

Every 24,000 km or 3 years

1 item
  • Change fork oil
    Front end
    Guideline

    Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 25,500 km or 4 years

1 item
  • Replace spark plugs
    Engine
    Guideline

Every 29,000 km

1 item
  • Replace chain and sprockets (wear based)
    Final drive
    Guideline

Every 32,000 km or 4 years

2 items
  • Repack / replace steering head bearings
    Front end
    Guideline

    Many old machines use loose balls in cups and cones. Taper roller conversions are common.

  • Repack / replace wheel bearings
    Wheels and tires
    Guideline

    Cup-and-cone and taper roller hubs need periodic repacking and adjustment.

Every 40,000 km or 6 years

1 item
  • Replace swingarm bushes / bearings
    Rear suspension and frame
    Guideline

Every 48,500 km or 6 years

1 item
  • Rebuild forks: seals, bushes, springs
    Front end
    Guideline

Every 6 months

1 item
  • Clean battery terminals, check charge and strap
    Ignition and electrics
    Guideline

Every 12 months

5 items
  • Carburetor (clean and adjust)
    Fuel and air
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: at least once a year.

  • Electrical contacts and switches (contact spray)
    Ignition and electrics
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: at least once a year.

  • Front fork (complete maintenance)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: at least once a year.

  • Steering head bearing and seals (clean and lubricate)
    Front end
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: at least once a year.

  • Brake fluid (change)
    Brakes
    Factory

    Factory: Periodic maintenance schedule (KTM 660 SMC 2005 owner's manual, English pp.18-19; columns: 1st service after 1,000 km or 10 hours, then after/every 5,000 km or once a year; for competition use the 5,000 km service after every race; intervals never to be exceeded by more than 500 km). p.19 supplementary table: at least once a year.

Every 2 years

4 items
  • Replace coolant
    Engine
    Guideline
  • Inspect wiring, bullet connectors and ground points
    Ignition and electrics
    Guideline
  • Inspect frame, welds and lugs for cracks
    Rear suspension and frame
    Guideline
  • Replace brake fluid
    Brakes
    Guideline

Every 4 years

3 items
  • Replace fuel lines
    Fuel and air
    Guideline

    Old rubber and modern ethanol fuel do not mix well.

  • Inspect brake hoses; replace old rubber
    Brakes
    Guideline
  • Rebuild calipers and master cylinders (seals)
    Brakes
    Guideline

Every 6 years

1 item
  • Replace tires on age (regardless of tread)
    Wheels and tires
    Guideline

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.

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