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Moto Guzzi · Pushrod four-stroke single, dry sump, separate gearbox oil, chain drive

Stornello 125

Library entry covers 1960-2018

17 factory 61 guideline

Published source

Moto Guzzi Stornello Sport 125 cc Rider's Handbook, Table for periodical maintenance pp.21-22 (thisoldtractor.com)

Factory source. Covers Moto Guzzi Stornello Sport 125 cc rider's handbook (English; no year printed in the pages read); covers the Stornello Sport 125 named on its cover, not later models in this row.

78 items for a 1988 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: Mesh screens / strainers only
Valve gear: Overhead valve, pushrods, adjustable tappets
Ignition: Magneto (incl. magdyno, flywheel magneto)
Charging: DC generator with regulator
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Single carburetor
Cooling: Air / oil cooled
Primary drive: Chain in oil-bath case with its own oil
Gearbox oil: Separate gearbox oil
Clutch control: Hand lever, cable
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, twin shocks
Front brake: Drum (or band / stirrup)
Rear brake: Drum (or band / belt rim)
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

1988 Moto Guzzi Stornello 125

On the road: every 200 mi

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 300 mi

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 600 mi

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

Every 200 mi

2 items

Crankcase oil level (check and top up)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 300 km (200 mi); keep between the dipstick marks. Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Tire pressure (check)

Wheels and tires

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 300 km (200 mi): front about 24 lb solo, 26 lb with pillion; rear 26 lb solo, 35 lb with pillion. Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 300 mi

1 item

Tappets (check and adjust)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): after the first 500 km (300 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 1,000 mi or 1 month

1 item

Check battery electrolyte, top up with distilled water

Ignition and electrics

Guideline

Wet-cell batteries on old machines need regular topping up, more in hot weather.

Every 1,000 mi or 6 months

3 items

Adjust front drum brake

Brakes

Guideline
Adjust rear drum brake and rod / cable linkage

Brakes

Guideline
Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 1,200 mi

4 items

Engine oil (renew) and filter (clean)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): after the first 500 km (300 mi), then every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Carburetor banjo union filter (clean)

Fuel and air

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Rear chain (wash with gas and grease lightly)

Final drive

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Speedometer drive (grease through the nipple on the front brake block)

Brakes

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 1,800 mi

1 item

Spark plug (clean and check gap 0.6 mm)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 3000 km (1800 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 3,000 mi or 12 months

15 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.
Check throttle cable(s) free play and return

Fuel and air

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 fuel tap filter / sediment bowl

Fuel and air

Guideline
Check / set ignition timing

Ignition and electrics

Guideline
Clean and gap contact breaker points, oil cam felt

Ignition and electrics

Guideline
Oil / check generator bearings (where an oiler is fitted)

Ignition and electrics

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
Check steering head bearing adjustment

Front end

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 spoke tension and wheel true

Wheels and tires

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 3,000 mi

1 item

Flywheel alternator (clean, lubricate, check contact points gap 0.40 mm)

Wheels and tires

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 5000 km (3000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 4,000 mi or 12 months

3 items

Inspect, clean and gap spark plugs

Engine

Guideline
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Guideline
Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 5,000 mi or 12 months

2 items

Change primary chaincase oil

Primary and gearbox

Guideline
Check / adjust primary chain

Primary and gearbox

Guideline

Every 6,000 mi or 12 months

8 items

Clean oil strainers / mesh screens

Engine

Guideline

Often done with every oil change on old machines.
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
Inspect generator brushes and commutator

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 6,000 mi or 2 years

4 items

Check and adjust valve clearances

Engine

Guideline
Lubricate and check automatic advance unit

Ignition and electrics

Guideline
Magneto: clean slip ring and pickup brush, check HT lead

Ignition and electrics

Guideline
Change gearbox oil

Primary and gearbox

Guideline

Every 6,000 mi

6 items

Nuts and screws (check tightness)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): after the first 500 km (300 mi); nuts and bolts every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Carburetor (strip, check and clean)

Fuel and air

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Cylinder head (remove carbon deposits)

Fuel and air

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Fuel pipes and tap (clean out, especially the filters above the taps)

Fuel and air

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Steering head cups (pack with grease)

Front end

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).
Telescopic fork fluid level (check)

Front end

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 10,000 km (6000 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 8,000 mi or 2 years

1 item

Replace spark plugs

Engine

Guideline

Every 10,000 mi or 2 years

2 items

Compression test (or leak-down)

Engine

Guideline
Change fork oil

Front end

Guideline

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

Every 12,000 mi or 2 years

2 items

Replace air filter element

Fuel and air

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 12,000 mi or 3 years

1 item

Replace points and condenser

Ignition and electrics

Guideline

Every 12,000 mi

1 item

Centrifugal oil filter (clean)

Engine

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every 20,000 km (12,000 mi); the maintenance instructions (p.26) call it good practice every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

Every 15,000 mi

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 18,000 mi

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 20,000 mi 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 25,000 mi or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 25,000 mi or 10 years

1 item

Magneto overhaul / re-magnetize, replace capacitor

Ignition and electrics

Guideline

Weak spark when hot is the classic symptom. Old capacitors fail with age, not miles.

Every 30,000 mi or 6 years

1 item

Rebuild forks: seals, bushes, springs

Front end

Guideline

Every 1 month

1 item

Battery electrolyte level (check)

Ignition and electrics

Factory

Factory: Table for periodical maintenance (Stornello Sport 125 rider's handbook pp.21-22): every month in summer; the winter interval is printed without a number ("about every months in the winter"); also every 2000 km (1200 mi). Sections as printed: every month; every 300 km (200 mi); after 500 km (300 mi); every 2000 km (1200 mi); every 3000 km (1800 mi); every 5000 km (3000 mi); every 10,000 km (6000 mi); every 20,000 km (12,000 mi).

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

2 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline

Every 4 years

1 item

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.

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.