Suzuki GSX550 / GSX750 / GSX1100 and Katana (air-cooled) — Example photo: Rainmaker47, CC BY-SA 3.0, Wikimedia Commons

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Suzuki · Suzuki GS air-cooled four (GS400-GS1100 1976-1988)

GSX550 / GSX750 / GSX1100 and Katana (air-cooled)

Library entry covers 1980-1987

28 factory 32 guideline

Published source

Suzuki Katana 1100 Service Manual (Suzuki Motor Co.), Periodic Maintenance Chart p.2-1

Factory service manual. Covers Katana 1100 (GSX1100S) service manual, US/EPA chart in km, mi and months.

60 items for a 1985 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: Two or more carburetors
Cooling: Air / oil 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, twin shocks
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

1985 Suzuki GSX550 / GSX750 / GSX1100 and Katana (air-cooled)

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

2 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline

On the road: every 1,000 km

2 items

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Factory

Manual: Drive chain: clean and lubricate. Factory: Periodic maintenance chart p.2-1: every 600 mi (1,000 km); inspect at every column

Every 3,000 km

1 item

Clean / inspect air filter

Fuel and air

Factory

Manual: Air cleaner: clean. Factory: Periodic maintenance chart p.2-1: clean every 2,000 mi (3,000 km)

Every 5,000 km or 12 months

8 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean fuel tap filter / sediment bowl

Fuel and air

Guideline
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
Inspect fork seals, stanchions and fork boots

Front end

Guideline
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
Check wheel bearings for play

Wheels and tires

Guideline

Every 6,000 km or 12 months

17 items

Walk-around: check nuts and bolts for vibration loosening

Pre-ride / on the road

Factory

Manual: Chassis bolts and nuts: tighten. Factory: Periodic maintenance chart p.2-1: T at every column, first at 600 mi
Change engine oil

Engine

Factory

Manual: Engine oil: replace. Factory: Periodic maintenance chart p.2-1: R at every column, first at 600 mi
Check and adjust valve clearances

Engine

Factory

Manual: Valve clearance: inspect. Factory: Periodic maintenance chart p.2-1: I at every column, first at 600 mi
Check cylinder head bolt torque

Engine

Factory

Manual: Cylinder head nuts and exhaust pipe bolts: tighten. Factory: Periodic maintenance chart p.2-1: T at every column, first at 600 mi
Inspect, clean and gap spark plugs

Engine

Factory

Manual: Spark plugs: inspect. Factory: Periodic maintenance chart p.2-1: I at 4000 and 11000 mi, R at 7500 and 15000 mi
Replace oil filter

Engine

Factory

Manual: Oil filter: replace. Factory: Periodic maintenance chart p.2-1: replaced with the oil at every column, first at 600 mi
Fuel line and vapor hose: inspect

Fuel and air

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi; replace every four years. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Synchronize carburetors

Fuel and air

Factory

Manual: Carburetors (idle rpm): inspect. Factory: Periodic maintenance chart p.2-1: I at every column, first at 600 mi
Check battery electrolyte, top up with distilled water

Ignition and electrics

Factory

Manual: Battery: inspect. Factory: Periodic maintenance chart p.2-1: I at 4000/7500/11000/15000 mi columns
Clutch fluid: inspect

Primary and gearbox

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi; replace every two years. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Clutch hose: inspect

Primary and gearbox

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Drive chain: inspect

Final drive

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi; clean and lubricate every 600 mi (1,000 km). (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Check steering head bearing adjustment

Front end

Factory

Manual: Steering: inspect. Factory: Periodic maintenance chart p.2-1: I at every column, first at 600 mi
Brake fluid: inspect

Brakes

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi; replace every two years. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Brake hoses: inspect

Brakes

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): I at every column, first at 600 mi; replace every four years. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Check brake pads and discs

Brakes

Factory

Manual: Brakes: inspect. Factory: Periodic maintenance chart p.2-1: I at every column, first at 600 mi
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: Tires: inspect. Factory: Periodic maintenance chart p.2-1: I at every column, first at 600 mi

Every 6,500 km or 12 months

1 item

Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Guideline

Every 9,500 km or 12 months

5 items

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
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 12,000 km or 2 years

3 items

Replace spark plugs

Engine

Factory

Manual: Spark plugs: replace. Factory: Periodic maintenance chart p.2-1: R at 7500 and 15000 mi columns
Change fork oil

Front end

Factory

Manual: Front fork: inspect. Factory: Periodic maintenance chart p.2-1: I at 600, 7500 and 15000 mi
Inspect rear shocks for leaks and damping

Rear suspension and frame

Factory

Manual: Rear suspension: inspect. Factory: Periodic maintenance chart p.2-1: I at 600, 7500 and 15000 mi

Every 12,000 km

1 item

Replace air filter element

Fuel and air

Factory

Manual: Air cleaner: replace. Factory: Periodic maintenance chart p.2-1: replace every 7,500 mi (12,000 km)

Every 13,000 km or 2 years

1 item

Check valve clearances (shim adjusted)

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

1 item

Grease swingarm pivot

Rear suspension and frame

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

1 item

Check speedometer / odometer against a known distance

Controls and cables

Guideline

Old speedos drift with tire size and drive wear. Use phone GPS over a measured 10 miles / km.

Every 2 years

4 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Replace hydraulic clutch fluid

Primary and gearbox

Factory

Manual: Clutch fluid: replace. Factory: Periodic maintenance chart p.2-1: replace every two years; clutch hose replaced every four years; both inspected at every column
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Replace brake fluid

Brakes

Factory

Manual: Brake fluid: replace. Factory: Periodic maintenance chart p.2-1: replace every two years; inspect at every column, first at 600 mi

Every 4 years

4 items

Replace fuel lines

Fuel and air

Factory

Manual: Fuel line and vapor hose: replace. Factory: Periodic maintenance chart p.2-1: replace every four years; inspect at every column, first at 600 mi
Clutch hose: replace

Primary and gearbox

Factory

Factory: Periodic maintenance chart p.2-1 (columns 600 mi/2 months, 4,000 mi/12, 7,500 mi/24, 11,000 mi/36, 15,000 mi/48 months): replace every four years. (Read from the page image, ManualsLib Suzuki Katana 1100 service manual p.2-1.)
Inspect brake hoses; replace old rubber

Brakes

Factory

Manual: Brake hoses: replace. Factory: Periodic maintenance chart p.2-1: replace every four years; inspect at every column, first at 600 mi
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.