E-Bike Maintenance Checklist: What to Check and When

October 22, 2026

Rider in a helmet checking the brake lever of a commuter e-bike beside a floor pump in early spring

Check your e-bike's tires, brakes, chain, lights and battery mount before every ride, then work through a fuller tune-up of bolts, wheels and bearings regularly. Park Tool's guidelines say to replace a chain by 0.5% to 1.0% wear, depending on the drivetrain, and brake pads with less than about 1 mm of material. Keep the battery dry, charge it at room temperature and store it at about half charge.

Guidance checked October 2026 (sources at the end). Where your bike's own manual gives different specifications, follow the manual.

E-bike maintenance schedule at a glance

When	What to check	Guideline
Before every ride	Tires, brakes, chain, lights and reflectors, battery locked in place	Ontario's safety checklist and e-bike rules
After wet, muddy or salty rides	Wash at low pressure, dry, re-lube the chain	Park Tool washing and chain care
Regular tune-up	Bolts, quick releases, headset, axles, spokes, wheel true, shifting	Ontario's tune-up checklist
When shifting slips, and at each tune-up	Chain wear	Replace at 0.5% (11-speed or more), 0.75% (10-speed or less) or 1.0% (single speed)
When braking feels weak or noisy, and at each tune-up	Pad thickness and contamination	At least 1 mm of pad material, per Park Tool
Off-season	Battery storage	About 50% charge, checked every three months, per Health Canada

Before every ride

Ontario's cycling guide says a well-maintained bike is key to a safe ride and recommends a basic safety check before each ride. Here is that check, with the e-bike parts added:

Tires and wheels: inflate to the recommended pressure shown on the tire, and look for loose, bent or broken spokes.
Brakes: fully applied, the levers should stop at least 2.5 cm from the handlebar, and the cables shouldn't be frayed or stretched.
Chain and gears: the chain shouldn't slip, and it should stay on the sprockets.
Lights and reflectors: all the mandatory ones should work.
Battery and motor: Ontario's e-bike rules require the battery and motor to be securely fastened so they can't move while riding, with all electrical terminals insulated. B.C. has the same requirement.

Ontario also requires an e-bike's two independent brakes to stop it from 30 km/h within 9 metres on level asphalt, so a weak brake is a legal problem as well as a safety one.

Gear the law requires

Ontario's cycling guide says the law requires a bell or horn, plus white reflective tape on the front forks and red on the rear. From half an hour before sunset to half an hour after sunrise, you also need a white front light and a red rear light or reflector. The guide adds that traffic laws for bicycles also apply to e-bikes.

In Alberta, a power bicycle needs a headlamp, tail lamp, reflectors, brakes and a horn. Our e-bike laws page covers the rest of the rules by province.

Chain: clean it, lube it, measure it

Park Tool explains that a chain wears as its rivets and rollers wear, which looks like stretching. A worn chain meshes poorly with the cogs and chainrings, shifts badly and wears those parts early, and replacing a cassette costs more than replacing a chain. Warning signs include a chain that slips under load, or one that hangs on a chainring when you shift.

Drivetrain	Replace the chain by
Single speed	1.0% wear
10-speed or fewer	0.75% wear
11-speed or more	0.5% wear

Those are Park Tool's general guidelines; it says to check your drivetrain maker's own specification. A chain checker gives the most accurate reading. Without one, line up a rivet with zero on a ruler: the 24th rivet after it should sit at 304.8 mm (12 inches), and if it's more than about 1.6 mm (1/16 inch) past that, the chain is due.

Check wear first: Park Tool says a chain past its service life should be replaced, not cleaned.
Degrease: scrub the chain with a bicycle degreaser, then with soapy water.
Dry it: run the chain through a clean, dry rag.
Lube it: put a small drop of chain lube on each rivet, then wipe off the excess so it doesn't collect dirt.

On a mid-drive e-bike, the motor's force goes through the chain too; our hub motor vs mid-drive guide explains what that means for wear.

Brakes: pads, rotors and contamination

Park Tool says disc brake pad material should generally measure at least 1 mm thick, and suggests three stacked business cards as a rough 1 mm gauge. Check the pad maker's own wear specification, too.

Contamination can ruin pads too. Park Tool lists the signs: a squeal, extra effort at the lever to slow down, or a dark film on the rotor and pads that smears when you rub it with a finger. Common sources are overspray from aerosol lubricants and hydraulic leaks, so lube the chain carefully and keep sprays well away from the rotors.

Washing without water damage

Go gentle: Park Tool suggests warm, soapy water and soft brushes, and if you use a hose, low pressure with a wide spray.
Dry it: if you use compressed air, don't blast the bearings directly.
Re-lube: the chain needs fresh lube after every wash.
Mind the battery: Health Canada says not to let moisture form on either end of the battery's terminals, so follow your manual on whether to remove the battery before washing.

Riding through winter? Our winter riding guide has a road salt routine.

Battery care through the year

Charge safely: Health Canada says to charge at room temperature where you can see the battery, away from soft surfaces and exit doors, and not for longer than recommended.
Use the right parts: use the charger that came with the bike. Health Canada advises replacing batteries only with original parts from the manufacturer or dealer, and never modifying them.
Inspect it: don't use a battery that is swollen, dented or damaged.
Mind the cold: never charge below zero, and bring the battery to room temperature first.
Store it right: about 50% charge for long storage, checked every three months.

Tune-up checklist

Ontario's tune-up checklist covers the parts that loosen or wear between rides:

Bolts and quick releases: tight on the seat, seat post, handlebar stem and axles.
Headset: turns freely and doesn't rattle.
Axles: shake each wheel side to side to check the bearings for looseness.
Shifting: run through all the gears; the derailleur shouldn't throw the chain off.
Wheels: centred in the forks, with no loose, bent or broken spokes. More than half a centimetre of wobble is cause for concern.

Two things to leave alone: Ontario says it's illegal to modify an e-bike's motor for more power or speed, and Health Canada warns never to modify or tamper with the battery. Our warranty page also explains that warranties don't cover wear, missed maintenance or modifications.

Frequently asked questions

How often should you service an e-bike?

Do a quick safety check before every ride, as Ontario's cycling guide recommends, and work through a full tune-up regularly. Measure chain and brake pad wear at each tune-up and whenever shifting or braking changes. Your bike's manual may set its own service intervals, so follow it.

How do I know if my e-bike chain is worn?

Measure it with a chain checker. Park Tool's general guideline is to replace the chain by 0.5% wear on 11-speed or more, 0.75% on 10-speed or fewer and 1.0% on a single speed. A chain that slips under load is another warning sign.

When should I replace e-bike brake pads?

When the pad material is down to about 1 mm, Park Tool's general guideline, or sooner if the pad maker says so. Replace contaminated pads too: Park Tool says squealing, extra lever effort and an oily smear on the rotor are signs.

Can you wash an e-bike with a hose?

Yes, gently. Park Tool says to use only low pressure with a wide spray, rinse from the top down and dry the bike before re-lubing the chain. Keep moisture off the battery terminals, as Health Canada advises.

What should I check on an e-bike before riding?

Ontario's basic safety check covers tire pressure, brake levers stopping at least 2.5 cm from the handlebar, a chain that stays on, and working lights and reflectors. On an e-bike, also make sure the battery is locked in place and the charge suits your trip.