Library · Videos

Motorcycle repair and how-it-works videos

81 of the most watched motorcycle videos on YouTube, sorted by topic. Each card says what the video teaches and links to the Moto Zero guide to read next. Videos play only when you press play. Popular is not the same as correct: for values, use your bike's manual.

Manufacturing 2

Case studyComplete Assembling of 70CC Motorcycle EngineArtsy · 7:31 · YouTube

Factory assembly film of a 70 cc engine; shows part order only, no torque or clearance values.

Case study70cc Metro Motorcycle Engine Assembling Process in a Factory |Amazing Technology · 23:36 · YouTube

Factory assembly of a 70 cc engine; shows how parts fit together, no specifications.

Restoration 13

Case studyFull Restoration 40 Years Old ruined Classic MotorcycleLive With Creativity · 42:09 · YouTube

Long classic restoration; inspiration only, no measurements or road test shown.

Case study"Heavy GIANT URAL" full RESTORATION from Trash to Incredible GOLD Motorcycle | Restoration AbandonedRescue Story · 42:20 · YouTube

Cosmetic restoration story; no evidence of mechanical testing.

Case studyHONDA WIN 100CC Full Restoration | Restoration Abandoned HONDA 100CC MotorcycleMetal Restoration · 40:37 · YouTube

Abandoned Honda 100 cc restoration; transformation story with no values.

Case studyFull Rebuild of Honda CB1300 in 18 Minutes: Time-lapseAutumn Car Playing · 17:59 · YouTube

18 minute time-lapse rebuild; no measurements, shows only the sequence.

Case studyRestoration of a Legendary HONDA CG125 EngineMrRescue · 27:01 · YouTube

Honda CG125 engine restoration; shows the engine stripped and rebuilt, values are for that engine only.

On Moto Zero: Crankcase

Case studyFull RESTORATION 60 Years Old Destroyed British MotorcycleLive With Creativity · 36:35 · YouTube

Long British bike restoration; transformation only, no values.

Case study1975 Honda CT90 Rebuild, ASMR Special | The Shop ManualRevZilla · 35:00 · YouTube

ASMR rebuild of a Honda CT90; engine and bike stripped and rebuilt, no values spoken.

Case studyFULL RESTORATION BURNED HARLEY DAVIDSON: From Wreck to New Motorcycle!BelarusCustoms · 53:25 · YouTube

Burned Harley restoration; transformation story, no values.

Case studyRestoration Of An Abandoned Yamaha TY 250 - Genuine Barn Find!RRC Restoration · 1:19:15 · YouTube

Yamaha TY250 barn find restoration; transformation story.

Case study1969 Yamaha DT-1 Rebuild, ASMR Special | The Shop ManualRevZilla · 36:34 · YouTube

ASMR rebuild of a 1969 Yamaha DT-1; sequence only, no values.

Case studyFull Restoration of a Honda CB400 – Bringing a Classic Motorcycle Back to LifeOldtimer Restauration Werkstatt · 24:09 · YouTube

Honda CB400 restoration; transformation story, no values.

Case studyFull Restoration Abandoned Motorcycle – Complete ProcessMrRescue · 30:39 · YouTube

Abandoned bike restoration; time-lapse, no measurements.

Case studyFull Restoration Detiling of HONDA motorcicle Supra x / wave 2002 abandoned | one month work PART 2Brasbrus · 45:03 · YouTube

Honda Supra X restoration detailing; cosmetic work.

How it works 14

How it worksHow Does A Carburetor Work? | Transparent Carburetor at 28,546 fps Slow Mo - Smarter Every Day 259SmarterEveryDay · 24:38 · YouTube

Slow-motion transparent carburettor shows how air and fuel mix; a science demo, not a service guide.

On Moto Zero: Fuel pours out of the carburettor overflow pipe · Engine runs hot and lean, pops and pinks · Course: m3-mixture

How it worksHow Motorcycles Work - The BasicsTecknoMechanics · 4:29 · YouTube

Short animated tour of the main systems of a four-stroke motorcycle.

On Moto Zero: Engine turns over but will not start · Engine (complete) · Course: m1-anatomy · Course: m1-history-systems

How it worksHow a motorcycle transmission works (Animation)TecknoMechanics · 6:08 · YouTube

Animation of a constant-mesh sequential gearbox: gears, dogs, shift drum and forks. Shows shift drum, forks and dogs, which explains false neutrals, jumping out and hard shifts.

On Moto Zero: Loud clunk when selecting first gear · Finds false neutrals between gears · Gears are hard to select · Jumps out of gear under load · Stuck in one gear · Gear lever does not spring back · Whining noise in one or more gears · Hard to find neutral · Gearbox · Gearbox gears and shafts · Shift drum and shift forks · Course: m4-gearbox

How it worksUnderstanding your motorcycle's brake | Disc BrakeSabin Civil Engineering · 5:30 · YouTube

Animation of how a disc brake works: lever, fluid, caliper and pads. Shows the whole hydraulic path, so a soft lever, drag or weak braking can be traced to a part.

On Moto Zero: Brake lever or pedal feels spongy · Brake fluid is dark or low · Brake lever slowly sinks when held · Brake lever pulls back to the handlebar · Brake fluid is leaking · Brake drags and the wheel does not spin freely · Brake caliper sticks or is seized · Brakes get weaker when hot · Brakes are firm but do not stop the bike well · Brakes grind or scrape · Brakes squeal · Brake pads wear unevenly · Front disc brake · Brake caliper · Brake pads · Course: m4-brakes

How it worksCarburetors vs. Electronic Fuel Injection—What’s Better? | MC GarageMotorcyclist Magazine · 3:41 · YouTube

Short side by side of carburettor and EFI, how each meters fuel.

On Moto Zero: Fuel injector suspected blocked or leaking · Unstable idle after cleaning or battery disconnection (fuel-injected) · Engine warning light (check engine, MIL) is on or flashing · No buzz from the fuel pump when the key is turned on · Fuel injector · Course: m3-mixture · Course: m3-efi

How it works4-Stroke Motor Cycle AnimationLubrizol360 · 2:51 · YouTube

Four-stroke animation showing engine, clutch and gearbox sharing one oil supply.

On Moto Zero: Oil pressure or oil level light is on · Engine oil · Oil pump · Course: m2-lubrication-cooling · Course: m2-four-stroke

How it works7 Minute Motorcycle Teardown – Mechanic Crash CourseFortNine · 7:07 · YouTube

Fast teardown naming the main parts; a map of the bike, not a procedure.

On Moto Zero: Engine (complete) · Frame · Course: m1-anatomy

How it worksThe Truth About Clutchless Shifting | MC GarageMotorcyclist Magazine · 4:29 · YouTube

What clutchless shifting does inside the gearbox and its limits.

On Moto Zero: Gearbox · Clutch assembly · Gear shift mechanism · Course: m4-gearbox

How it worksHow a Motorcycle Transmission Works | MC GARAGEMotorcyclist Magazine · 3:45 · YouTube

Answers common questions about how a motorcycle gearbox behaves.

On Moto Zero: Loud clunk when selecting first gear · Finds false neutrals between gears · Gears are hard to select · Hard to find neutral · Gearbox · Course: m4-gearbox

How it worksFrom cylinder to clutch to transmission: a complete Motorcycle Engine explainedAl's Garage · 24:36 · YouTube

Yamaha SR250 engine explained from cylinder through clutch to gearbox on a real engine.

On Moto Zero: Ticking noise from the top of the engine · Rattling noise from the cam chain area · Rumbling or growling from inside the engine · Deep knocking from the bottom of the engine · Clutch assembly · Course: m2-four-stroke · Course: m4-clutch

How it worksUnderstanding Motorcycle Transmission SystemEMecha3D · 4:24 · YouTube

Constant-mesh gearbox, gear ratios and the link between torque and speed.

On Moto Zero: Jumps out of gear under load · Whining noise in one or more gears · Gearbox gears and shafts

Engine engineering 13

How it worksThe Only Video You'll Ever Need to Watch to Know how 4 Stroke and 2 Stroke Engines Work and Differdriving 4 answers · 28:42 · YouTube

Long animated comparison of four-stroke and two-stroke engines and why they differ.

On Moto Zero: Low compression · Two-stroke is hard to start, runs lean or smokes (crankcase leak suspected) · Exhaust blocked or choked with carbon (two-stroke) · Oil dripping from the exhaust (two-stroke) · Two-stroke oil tank level is not going down · Engine (complete) · Cylinder (barrel) · Course: m2-four-stroke · Course: m2-two-stroke

How it worksCROSSPLANE inline 4 EXPLAINED in detail - How the YAMAHA R1 i4 differs from all other INLINE FOURSdriving 4 answers · 26:30 · YouTube

Why the crossplane crankshaft changes firing order and feel; engine design depth.

On Moto Zero: Crankshaft and connecting rod · Course: m2-bottom-end

How it worksThe Pros and Cons of Every Motorcycle Engine TypeFortNine · 15:23 · YouTube

Compares single, twin, triple, four and V engine layouts with pros and cons.

On Moto Zero: Course: m1-types · Course: m2-fundamentals

How it worksMotorcycle Riders: You're Using the Wrong RPMFortNine · 5:36 · YouTube

Why engine load and rpm choice affect wear and feel; not a universal rpm rule.

On Moto Zero: Pinging or rattling sound when accelerating (pinking) · Struggles to climb hills or carry a passenger · Course: m2-fundamentals

How it worksCarburetor vs Fuel Injection - Why Motorcycle Riders Should Think AgainFortNine · 7:51 · YouTube

Carburettor against fuel injection compared; useful for deciding which diagnosis path applies.

On Moto Zero: Fuel injector suspected blocked or leaking · Unstable idle after cleaning or battery disconnection (fuel-injected) · Fuel injector · Throttle body · Course: m3-mixture · Course: m3-efi

How it worksCylinder Offset Changes Everythingdriving 4 answers · 23:45 · YouTube

Why offsetting the cylinder from the crank line changes piston side force and friction.

On Moto Zero: Cylinder (barrel) · Crankshaft and connecting rod · Course: m2-bottom-end

How it worksLet's Settle This. Bore vs Stroke - It's Not That Simpledriving 4 answers · 25:10 · YouTube

Bore against stroke explained and why neither is simply better.

On Moto Zero: Cylinder (barrel) · Crankshaft and connecting rod · Course: m2-fundamentals

How it worksHonda's New V3 Electrical Compressor Engine Explaineddriving 4 answers · 14:52 · YouTube

Honda V3 with electric compressor; advanced engine concept, not for beginners.

How it worksThis Is Why Your Motorcycle Has a Redline | The Shop ManualRevZilla · 6:04 · YouTube

Why engines have a redline: valve float, piston speed and loads; limit differs per engine.

On Moto Zero: Valve springs · Valves

How it worksLogic Defying V5 Engine - Honda's RC211V Explained Like Never Beforedriving 4 answers · 16:59 · YouTube

Honda RC211V V5 explained; advanced engine layout idea.

On Moto Zero: Course: m1-types

How it worksDucati's Brilliant V4 Engine — Putting Supercars To Shame!Engineering Explained · 12:48 · YouTube

Ducati V4 engine layout and design ideas.

On Moto Zero: Course: m1-types

How it worksFortnine is Wrong. 285 Crossplane Twin Engines Do Not Have Better Balance than 270 Twinsdriving 4 answers · 21:57 · YouTube

A correction on crossplane twin balance; shows why assumptions matter in engine claims.

On Moto Zero: Course: m2-bottom-end

How it worksEvery Motorcycle Engine Ever (explained)BigTime · 38:42 · YouTube

Tour of every engine layout and why makers choose them.

Maintenance 17

How it worksNever Buy Chain Lube Again? Comparison TestFortNine · 12:38 · YouTube

Comparison test of chain lubes; results hold only for that test, not a universal pick.

How-toHow To Clean & Lube Your Motorcycle Chain at RevZilla.comRevZilla · 17:29 · YouTube

Step by step chain clean and lube with products and order of work; no model-specific values.

On Moto Zero: Clean and lubricate the chain · Chain is dry, rusty or has stiff links · Chain is noisy, clattering or slapping · Chain needs adjusting very often · Drive chain

How-to4 Mechanical Jobs Every Motorcyclist Should LearnFortNine · 10:11 · YouTube

Four jobs: wheel balance, plug gap, joining a chain and wheel alignment. Check specs for your bike.

On Moto Zero: Balance a wheel · Join a chain with a clip, press-fit or rivet link · Remove, check, gap and fit a spark plug · Align the front wheel, forks and handlebar · Chain has snapped · Bike pulls to one side

How it worksWhich Chain Cleaner is Best? Comparison TestFortNine · 9:10 · YouTube

Test of chain cleaners; shows what cleans best but not seal compatibility.

How it worksMechanical Monsters – 5 Maintenance Jobs that are Deadly to OverlookFortNine · 11:10 · YouTube

Neglected maintenance items that can fail dangerously (brakes, chain, fork seals, bearings); motivation, not a procedure.

On Moto Zero: Brakes are firm but do not stop the bike well · Brakes grind or scrape · Rumbling or grinding from a wheel · Oil leaking from a fork leg · Chain has snapped

How-toHow To Lubricate Your Motorcycle Chain | MC GarageMotorcyclist Magazine · 3:05 · YouTube

Short sealed chain lube, with the reason before the steps; applies to O-ring and X-ring chains.

On Moto Zero: Clean and lubricate the chain · Chain is dry, rusty or has stiff links · Chain is noisy, clattering or slapping · Drive chain

How it worksThe Storage Myth That Hurts Your Motorcycle | The Shop ManualRevZilla · 4:49 · YouTube

Corrects a storage myth; points to fuel and battery care. Climate differs, so check your own case.

On Moto Zero: Will not start after standing for weeks or months · Old or stale fuel in the tank

How-toHow To Wash Your Motorcycle | MC GarageMotorcyclist Magazine · 3:44 · YouTube

How to wash a bike without forcing water into bearings and electrics; good time to inspect.

On Moto Zero: Electrical faults after rain or washing · Will not start after rain or washing · Course: m4-maintenance

How-toHow To Bleed Your Motorcycle Brakes | MC GarageMotorcyclist Magazine · 5:06 · YouTube

Replace and bleed brake fluid so the lever feels firm; check the fluid type on your master cylinder.

On Moto Zero: Replace brake fluid and bleed the brakes · Brake lever or pedal feels spongy · Brake fluid is dark or low · Brake lever slowly sinks when held · Brake lever pulls back to the handlebar · Brakes get weaker when hot · Brake fluid · Course: m4-brakes

How-toEverything You Need To Know When Replacing Your Motorcycle’s Chain and Sprockets | The Shop ManualRevZilla · 7:14 · YouTube

Replace chain and sprockets: identify chain type, sprocket sizes and joining method; check your manual.

On Moto Zero: Replace the chain and sprockets · Join a chain with a clip, press-fit or rivet link · Identify the size of a drive chain · Sprocket teeth are hooked, sharp or broken · Chain needs adjusting very often · Chain is tight in some places and slack in others · Chain jumps teeth or comes off the sprockets · Chain has snapped · Chain adjuster has run out of travel · Front sprocket · Rear sprocket

How-toMotorcycle Maintenance For Beginners - What You Need To Know - The BasicsGas Works ISO · 11:27 · YouTube

Beginner checks: tyres, chain, oil level, lights and battery, all in one list.

On Moto Zero: Pre-ride check · Check the engine oil level · Check tyre pressure · Course: m4-maintenance

How-toHow to Clean & Lube Your Motorcycle Chain (The Right Way) | The Shop ManualRevZilla · 7:17 · YouTube

Clean and lube a chain the right way; a newer take on the standard procedure.

On Moto Zero: Clean and lubricate the chain · Chain is dry, rusty or has stiff links

How-toHow to Winterize Your Motorcycle | MC GarageMotorcyclist Magazine · 7:41 · YouTube

Prepare a bike for winter storage: fuel, battery, tyres and cover.

On Moto Zero: Bring a bike back into use after storage · Will not start after standing for weeks or months · Battery goes flat after the bike is parked · Course: m4-maintenance

How-toHow To Flush And Service Your Motorcycle's Radiator And Cooling System | MC GARAGEMotorcyclist Magazine · 3:15 · YouTube

Flush and refill the cooling system; bleeding and coolant type differ per bike.

On Moto Zero: Replace the coolant · Liquid-cooled engine overheats · Coolant is leaking · Temperature gauge reads high or the warning light is on · Radiator is damaged, bent or blocked · Coolant · Radiator · Course: m2-lubrication-cooling

Chassis engineering 4

How it worksOut-braking the ABS MythFortNine · 7:02 · YouTube

Braking test of ABS against a skilled rider; results depend on bike, tyres and surface.

On Moto Zero: ABS sensor and unit · Course: m4-brakes

How it worksAxial vs Radial Motorcycle Brakes | What's The Difference?Chaos Causes · 5:28 · YouTube

Axial against radial caliper mounting; what changes in stiffness and what stays the same.

On Moto Zero: Brake caliper · Brake master cylinder

How it worksMotorcycle Suspension Terminology Explained | The Shop ManualRevZilla · 7:22 · YouTube

Suspension terms explained: travel, sag, preload, damping.

On Moto Zero: Front forks bottom out · Front forks feel harsh over bumps · Rear bounces after bumps · Rear suspension feels harsh · Rear sits too low · Rear shock absorbers · Front forks · Course: m4-suspension

How it worksMotorcycle Geometry | EXPLAINEDMike on Bikes · 11:55 · YouTube

Rake, trail and wheelbase explained with diagrams.

On Moto Zero: Handlebars shake or wobble · Bike weaves at high speed · Steering feels heavy · Bike pulls to one side · Frame · Steering stem and yokes · Course: m4-frame-steering

Engine repair 6

Case studysplendour CD Dawn passion CD 100 Nxg 100cc engine ki piri jankari full engine fittingsajir bike guru · 31:26 · YouTube

Hindi workshop video fitting a 100 cc commuter engine; model variants differ, check before copying.

On Moto Zero: Crankcase

Case studyHonda SS50 engine strip down, rebuild and startAllen Millyard · 19:46 · YouTube

Honda SS50 strip down, rebuild and first start; shows where parts sit, values for that engine only.

On Moto Zero: Crankcase

Case studyBike में full engine का काम ! 100 cc bike repairing ! bike engine full overhaul ! change piston cyliMy Mechanical Support · 50:32 · YouTube

Hindi overhaul of a 100 cc engine, piston and cylinder work; a long film, check model before copying.

On Moto Zero: Piston · Course: m2-top-end

Case studyHonda XL175 engine repairAllen Millyard · 13:20 · YouTube

Honda XL175 engine repair and decisions with workshop tools; values for that engine only.

On Moto Zero: Course: m2-diagnosis

How it worksइंजन का काम कैसे करवाना चाहिए // कितना खर्च पड़ जाता है // Best Engine Service Hero Splendor /QAQASIM AUTO · 15:06 · YouTube

Hindi talk on engine work, service choices and cost; costs depend on place and date.

On Moto Zero: Course: m2-diagnosis

Case study🤩 Incredible 2-Stroke Engine Rebuild! | 1990 KX250mad marc · 31:41 · YouTube

1990 KX250 two-stroke rebuild; shows parts order and traceability, values for that bike only.

On Moto Zero: Piston · Course: m2-two-stroke

Workshop tools 2

How-toSpecial Tools Every Motorcyclist Should OwnFortNine · 10:48 · YouTube

Which specialist tools are worth owning; ties tools to tasks, check price and need first.

On Moto Zero: Buy, borrow or make a special tool · Course: m1-workshop

How-to10 Time-Saving Motorcycle ToolsFortNine · 10:05 · YouTube

Tools that save time in the workshop; weigh cost against how often you use them.

On Moto Zero: Build a basic motorcycle tool kit · Course: m1-workshop

Diagnostics 7

Case studyCan I Get This $300 Old Suzuki Motorcycle Running?The Bearded Mechanic · 29:29 · YouTube

Cheap Suzuki: diagnose why it will not run, step by step; a good example of reasoning order. Worth watching for the order of checks: fuel, spark, compression.

On Moto Zero: Engine turns over but will not start · Misfire: ignition or fuel? · Course: m2-diagnosis

How it worksThe BEST method for cleaning carburetors - soda blast and ultrasonicHow-To Motorcycle Repair · 20:55 · YouTube

Soda blasting against ultrasonic cleaning for carburettors; shop methods, check part compatibility.

How-toHow To Clean A Motorcycle Carburetor | MC GARAGEMotorcyclist Magazine · 4:53 · YouTube

Take a carburettor apart, clean jets and passages, keep parts organised; values are for that carb. Useful when fuel is not reaching the engine or idle is unstable; carburettor passages are the usual culprit.

On Moto Zero: Clean the carburettor · Rough, lumpy or uneven idle · No fuel reaching the carburettor · Engine stalls at idle or at junctions · Engine stops and only runs on reserve or after a rest · Water or dirt in the fuel · Old or stale fuel in the tank · Hesitates or stumbles when opening the throttle · Carburettor

How-toHow to Test Your Motorcycle’s Stator and Regulator Rectifier | The Shop ManualRevZilla · 7:07 · YouTube

Test the stator and regulator rectifier with a multimeter to tell charging faults from a weak battery; values are bike-specific. Shows the multimeter tests and what a good or bad reading means; values are for that bike.

On Moto Zero: Test the stator (generator coils) · Test the regulator rectifier · Test the charging system · Battery is not charging while riding · Battery overcharges and bulbs blow · Regulator is very hot or the connector has melted · Lights go dim at idle · A new battery goes flat quickly · Battery goes flat after the bike is parked · Headlight is dim · Headlight flickers · Bulbs keep blowing · Battery is boiling, swollen or leaking · Stator and flywheel · Regulator rectifier · Course: m3-battery-charging

How-toHow To Test a Dirt Bike StatorRocky Mountain ATV MC · 11:38 · YouTube

Test a dirt bike stator, single phase and three phase; values are for that bike only. Also a good stator test for dim lights or a flat battery; values are for that bike only.

On Moto Zero: Test the stator (generator coils) · Battery is not charging while riding · Burnt smell from the generator or a dark stator connector · Lights go dim at idle · Stator and flywheel

Custom engineering 3

Case studyMillyard Kawasaki S1 Four Cylinder Crankcases - How Its Made - Episode 1Allen Millyard · 19:13 · YouTube

Making four cylinder crankcases from scratch; shows what a crankcase does, not repairs.

Case studyMillyard Kawasaki S1 Four Cylinder - Bottom End Build- Episode 5Allen Millyard · 19:00 · YouTube

Building a four cylinder bottom end from scratch; shows crank and bearings in context.

On Moto Zero: Engine ball and needle bearings

Case studyKawasaki S1 four cylinder top end build and cylinder rebore - How its made - Episode 6Allen Millyard · 20:14 · YouTube

Custom top end and cylinder rebore; shows cylinder and piston in context, not a how-to.

On Moto Zero: Piston · Course: m2-top-end