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Zontes · Shim-adjusted overhead-cam four-stroke, wet sump, gearbox shares engine oil, chain drive

703F Advendture

Library entry covers 2025

30 factory 52 guideline

Published source

Zontes Adventure 703 F Owner's Manual, regular maintenance table printed pp.63-64 (ManualsLib viewer pp.51-52)

Factory owner's handbook. Covers Zontes Adventure 703 F owner's manual, no edition year.

82 items for a 2025 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
Wet sump (oil in crankcase)
Oil filtration
Replaceable cartridge or spin-on filter
Valve gear
Overhead cam, shim adjusted (incl. desmo)
Ignition
Electronic (CDI / transistor / ECU)
Charging
Alternator / stator with rectifier
Battery
Wet cell (flooded lead-acid, needs topping up)
Fuel system
Fuel injection
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
Spoked, tubed
Sidecar
No sidecar
Maintenance schedule

2025 Zontes 703F Advendture

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 1,000 km

1 item
  • Drive chain (clean, lubricate)
    Final drive
    Factory

    Factory: Regular maintenance table (p.63): every 500-1,000 km (note 1). Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

Every 1,600 km or 6 months

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

Every 5,000 km or 12 months

17 items
  • Engine oil (replace)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): check before riding; R at 1,000, 5,000, 10,000, 15,000 and 20,000 km; I at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Idle (check)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Check throttle cable(s) free play and return
    Fuel and air
    Guideline
  • Clutch lever free travel (check)
    Primary and gearbox
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • 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.

  • Drive chain (check)
    Final drive
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 km and at the annual check; see note 1. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Inspect chain and sprockets for wear (measure stretch)
    Final drive
    Guideline
  • Check steering head bearing adjustment
    Front end
    Guideline
  • Inspect fork seals, stanchions and fork boots
    Front end
    Guideline
  • Steering bearings (check)
    Front end
    Factory

    Factory: Regular maintenance table (p.64): I at 5,000, 10,000, 15,000 and 20,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • 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
  • Brake fluid (check)
    Brakes
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Check brake pads and discs
    Brakes
    Guideline
  • Check spoke tension and wheel true
    Wheels and tires
    Guideline
  • Check wheel bearings for play
    Wheels and tires
    Guideline
  • Tires (check)
    Wheels and tires
    Factory

    Factory: Regular maintenance table (p.63): check before riding; I at 5,000, 10,000, 15,000 and 20,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

Every 5,000 km

14 items
  • Muffler bolts and nuts (fasten)
    Engine
    Factory

    Factory: Regular maintenance table (p.64): T at 1,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Muffler heat-shield buffer (check)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Radiator hoses (check)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Spark plug (check)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 and 15,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Vehicle fasteners, bolts and nuts (fasten)
    Engine
    Factory

    Factory: Regular maintenance table (p.64): T at 1,000, 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Air filter element (check)
    Fuel and air
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 and 15,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Air filter oil pipe (check)
    Fuel and air
    Factory

    Factory: Regular maintenance table (p.64): I at 1,000, 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Fuel hose (check)
    Fuel and air
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Steering mechanism bolts and nuts (fasten)
    Front end
    Factory

    Factory: Regular maintenance table (p.64): T at 1,000, 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Swingarm wear block (check)
    Rear suspension and frame
    Factory

    Factory: Regular maintenance table (p.64): I at 5,000, 10,000, 15,000 and 20,000 km; see note 1. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Brake fluid hose (check)
    Brakes
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Brakes (check)
    Brakes
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Wheel spokes (check)
    Wheels and tires
    Factory

    Factory: Regular maintenance table (p.63): check before riding; I at 1,000 and 5,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Throttle cable clearance (check)
    Controls and cables
    Factory

    Factory: Regular maintenance table (p.63): I at 5,000, 10,000, 15,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

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

7 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.

  • 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 or 12 months

3 items
  • Oil filter (replace)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): R at 1,000, 10,000 and 20,000 km; I at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Front shock absorber (check)
    Rear suspension and frame
    Factory

    Factory: Regular maintenance table (p.64): check before riding; I at 10,000 and 20,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Rear shock absorber (check)
    Rear suspension and frame
    Factory

    Factory: Regular maintenance table (p.64): check before riding; I at 10,000 km and at the annual check. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

Every 10,000 km

4 items
  • Spark plug (replace)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): R at 10,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Throttle body (check)
    Engine
    Factory

    Factory: Regular maintenance table (p.63): I at 1,000 and 10,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Air filter element (replace)
    Fuel and air
    Factory

    Factory: Regular maintenance table (p.63): R at 10,000 and 20,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

  • Ignition lock mechanism (check, clean, lubricate)
    Ignition and electrics
    Factory

    Factory: Regular maintenance table (p.64): check, clean and lubricate every 10,000 km. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

Every 16,000 km or 2 years

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

Every 19,500 km or 2 years

4 items
  • Replace air filter element
    Fuel and air
    Guideline
  • Synchronize throttle bodies
    Fuel and air
    Guideline
  • Clean and grease rear suspension linkage
    Rear suspension and frame
    Guideline
  • Grease swingarm pivot
    Rear suspension and frame
    Guideline

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 24,000 km or 4 years

1 item
  • Check valve clearances (shim adjusted)
    Engine
    Guideline

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 38,500 km or 4 years

1 item
  • Replace fuel filter
    Fuel and air
    Guideline

Every 40,000 km or 12 months

1 item
  • Valve clearance, cold (check, adjust)
    Engine
    Factory

    Factory: Regular maintenance table (p.64): check and adjust every 40,000 km; I at the annual check; intake 0.1-0.22 mm, exhaust 0.2-0.33 mm. Columns: check before riding; 1,000, 5,000, 10,000, 15,000 and 20,000 km (0.6, 3, 6, 9 and 12 thousand mi); annual check; regular replacement. Codes: I = check (clean, lubricate, adjust or replace if necessary); R = replace; T = fasten. Note 1: clean and lubricate the chain every 500-1,000 km and check the upper and lower wear of the swingarm wear block.

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 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

2 items
  • Replace inner tubes and rim tape with tires
    Wheels and tires
    Guideline
  • 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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