Bike Maintenance and Mechanics

A well-maintained bike is a safer bike, more pleasant to ride, and one that lasts far longer. You don’t need to be a mechanic to take care of the essentials: with a few basic tools and about thirty minutes a week, you avoid most breakdowns and catch problems before they leave you stranded at the roadside. In this chapter, you’ll learn to fix a flat, adjust your brakes, lube your chain, check your tires and clean your machine. You’ll also learn when it’s better to hand your bike to a pro. Whether you ride a city hybrid or a carbon road bike, these simple skills will quickly become second nature.

Fixing a flat, step by step

A flat is the cyclist’s number-one mishap. Knowing how to change a tube at the roadside makes you self-sufficient. Here’s the method:

1. Remove the wheel: open the brake lever (on rim brakes), loosen the quick release or thru-axle, and slide the wheel out.
2. Fully deflate whatever air is left in the tube.
3. Unseat the tire with plastic tire levers: slip one under the bead, hook it onto a spoke, then slide the second one all the way around to free one side of the tire.
4. Pull out the tube, starting on the side opposite the valve.
5. Find the cause: run your finger inside the tire to locate the shard, wire or thorn that caused the flat. If you don’t remove it, you’ll flat again right away.
6. Install the new tube (or one repaired with a patch): inflate it slightly to give it shape, insert the valve into the hole, then tuck the tube inside the tire.
7. Reseat the tire by hand, finishing opposite the valve. Make sure no part of the tube is pinched under the bead.
8. Inflate to the recommended pressure (printed on the tire sidewall), put the wheel back on and reconnect the brake.

Always carry on a ride: a spare tube, two tire levers, a portable pump or CO2 cartridges, and a multi-tool. A flat with no gear means a long walk—especially if you’re taking on a long challenge like conquering your first 100 km.

Adjusting the brakes

Effective brakes are non-negotiable. The two main families each have their quirks:

Rim brakes (pads)

• The pads must touch the rim, never the tire (risk of a blowout) or the empty space below it.
• When the pads are worn (grooves gone), replace them.
• If the lever pulls all the way to the handlebar, the cable has stretched: tighten it via the barrel adjuster, or re-tension the cable.

Disc brakes

• More powerful and consistent in the rain, but trickier to set up.
• Rubbing or a scraping noise indicates a warped rotor or a poorly centred caliper.
• Never touch the pads or rotor with greasy fingers: it contaminates them and reduces braking power.
• Bleeding hydraulic brakes is a pro’s job—don’t improvise.

In every case, test your brakes while stationary before each ride: squeeze the levers; they shouldn’t touch the handlebar, and the wheel should lock up.

Lubing the chain

A clean, well-lubed chain means less friction, smoother shifting and a drivetrain that lasts thousands more kilometres. The rule: a chain should never squeak or be black with grime.

• Frequency: every 100 to 300 km, or as soon as you hear a squeak, or after every ride in the rain.
• Dry lube: ideal in dry, dusty conditions. It attracts less dirt but washes off faster. Perfect for Quebec’s dry summers.
• Wet lube: for rain, fall and long distances. It resists water better but attracts dust, so you need to clean more often.

Application: first wipe the chain with a rag (and a degreaser if it’s very dirty), apply a drop of lube to each link while turning the pedals backward, let it soak in for a few minutes, then wipe off the excess. A chain dripping with lube attracts dirt like a magnet.

Checking the tires

Your tires are your only contact with the ground. Keep an eye on:

• Pressure: check it before every ride or every 2–3 days. An under-inflated tire flats more easily (pinch flats) and rolls poorly; over-inflated, it slips and is uncomfortable. Respect the range printed on the sidewall.
• Wear: a road tire worn too far goes flat in the centre or shows the casing; a mountain tire loses its knobs. Replace it before it becomes dangerous.
• Cuts and foreign objects: inspect the tread and remove any small stones or shards lodged in the rubber.

Cleaning your bike

Regular cleaning extends the life of every part. No need to take everything apart:

1. Rinse with water (a gentle stream, never high pressure directly on the bearings).
2. Wash the frame with a mild soap and a sponge.
3. Scrub the drivetrain (chain, cassette, derailleurs) with a brush and a degreaser.
4. Rinse and dry with a rag.
5. Re-lube the chain—cleaning always strips the lubricant.

The ABC check before every ride

Before you set off, do the ABC check—three letters, thirty seconds, zero nasty surprises:

• A — Air: is the pressure correct in both tires?
• B — Brakes: do both brakes bite, and do the levers stay clear of the handlebar?
• C — Chain (and drivetrain): is the chain clean, lubed, and shifting through the gears?

Add a “bounce” test: lift the bike a few centimetres and let it drop. A suspicious rattle warns you that a part is loose. Also check that the wheels’ quick releases are firmly closed.

Maintenance schedule

Task	Frequency
ABC check	Before every ride
Tire pressure	Every 1–3 days
Chain lubrication	Every 100–300 km or after rain
Drivetrain cleaning	Every 2–4 weeks depending on use
Brake pad inspection	Monthly
Full tune-up by a pro	1 to 2 times a year
Chain replacement	Every 3,000–5,000 km (based on measured wear)

The basic tools to have

• A multi-tool with Allen (hex) keys from 2 to 8 mm and screwdrivers.
• Tire levers and a floor pump (plus a portable pump for rides).
• A spare tube and a patch kit.
• Chain lube and a degreaser.
• Rags and a cleaning brush.
• A chain-wear checker (small and cheap, it saves you a cassette).

When to hand your bike to a pro

Some tasks call for expertise and specialized tools: bleeding hydraulic brakes, complex wheel truing, fine derailleur adjustment, bearing replacement, bottom-bracket issues, building up a new bike. If you’re not sure, it’s better to leave the work to a mechanic than to make things worse. An annual tune-up at a shop remains the best investment in your bike’s longevity. Find a trusted shop near you in our directory of bike shops. And if you’re thinking of switching machines instead, check out our complete bike buying guide.

Adjusting your gears and derailleur

A drivetrain that skips, clatters or refuses to climb to the big sprocket is often just a cable-tension problem. Before rushing to the mechanic, you can correct small misalignments yourself:

• The barrel adjuster at the end of the rear derailleur or on the shifter lets you fine-tune. If the chain hesitates to climb to the larger sprockets, turn the adjuster a quarter-turn to the left (counterclockwise) to add cable tension; the reverse to shift down.
• Work in small increments, a quarter-turn at a time, turning the pedals and shifting gears to test.
• The limit screws (H and L) stop the chain from jumping over the smallest or largest sprocket. Only touch them if the chain derails; otherwise, leave them alone.

If shifting is still imprecise after these adjustments, the cable may be worn or the derailleur hanger bent (common after a fall): that’s then a shop job.

Preparing your bike for winter and storage

In Quebec, many bikes hibernate for several months. Careful storage spares you nasty surprises in the spring:

• Clean and lube thoroughly before putting it away: you don’t want grime and sweat drying on it all winter.
• Inflate the tires to maximum pressure and, ideally, hang the bike or turn the wheels now and then to avoid flat spots.
• Store it dry: a temperate basement beats a damp shed that invites rust.
• Remove an e-bike battery and keep it indoors, at room temperature and partially charged—cold and full discharge damage it.

Conversely, if you ride all winter, plan for a dedicated “beater” bike, because salt and slush are merciless on the drivetrain. Clean it very often and re-lube with a water-resistant wet lube. Our guide to winter cycling in Quebec details the gear and care specific to the cold season.

Suspicious noises and what they mean

Your bike talks to you. Learning to decode its noises means catching problems early:

• Chain squeak: lack of lubricant. The easiest to fix.
• Regular clicking while pedalling: a pedal, cleat, bottom bracket or a stiff link to check.
• Constant rubbing: a pad touching, or a slightly warped rotor.
• Creaking under effort: often a stem or seatpost bolt to retighten (to the recommended torque, especially on carbon), or a bottom bracket.
• Squealing when braking: contaminated pads or a dirty rim.

Never ride for long with a new, persistent noise: it’s almost always the sign of a part working loose or wearing abnormally.

Setting up your workshop corner

You don’t need a pro’s garage to maintain your bike well. An organized corner makes every task simpler and more enjoyable:

• A repair stand is the best investment after the basic tools: it holds the bike at working height and lets you spin the wheels and pedals freely. You’ll work ten times better than with the bike flipped onto its saddle.
• Good lighting to spot wear, cracks and fine adjustments.
• Rags and a mat so you don’t stain the floor with grease and degreaser.
• Clear storage for your tools and consumables (lube, tubes, pads), so you’re not searching for hours.

Plenty of online resources, videos and community workshops (bike co-ops often offer courses and equipped spaces) will help you build your skills at your own pace. Start with the simple tasks, gain confidence, and you’ll end up enjoying this maintenance time as much as the ride itself.