Suzuki
Your motorcycle

2019 Suzuki Boulevard S40

652cc single · air-cooled · belt drive
Typical for 2005–2019 · confirm in your manual
All listed trims share these maintenance parts.

Your oil change shopping list

Everything for one DIY oil change
OilEngine oil10W-40 · JASO MA · Capacity: see manualBuy on Amazon
1Oil filterMatch by year and modelBuy on Amazon
1Crush washerFor the drain plugBuy on Amazon

Parts & fluids for the 2019 Boulevard S40, by area of the bike

Each part shows when it's due and who should do it: DIY · EasyDIY · ModerateMechanicDealer or specialist

EngineOil, filters, plugs and valves5 items
Engine oil10W-40 · JASO MACapacity: see manual. Use motorcycle oil rated JASO MA or MA2. Car oils with friction modifiers can make a wet clutch slip.
WhenEvery 3,500 mi or once a year
DIY · EasyBuy on Amazon
Oil filterMatch by year and modelUse the store's fit check or your manual's part number.
WhenEvery oil change
DIY · EasyBuy on Amazon
Drain plug crush washerNew washer each changeCheap insurance against leaks. Torque the drain plug to spec; aluminum cases strip easily.
WhenEvery oil change
DIY · EasyBuy on Amazon
Air filterFits 2019 Suzuki Boulevard S40Usually under the seat or tank. A clogged filter costs power and fuel economy.
WhenEvery 11,000 mi (sooner on dusty roads)
DIY · ModerateBuy on Amazon
Spark plugs (1)Fits 2019 Suzuki Boulevard S40Usually easy to reach. Use a plug socket and torque them to spec.
WhenEvery 7,500 mi
DIY · ModerateBuy on Amazon
Final drive (belt)What turns the rear wheel2 items
Drive beltFits 2019 Suzuki Boulevard S40Belts are clean and quiet. Rocks are their enemy: check for chips and missing teeth.
WhenCheck tension and condition every service; replace when cracked or worn (often 40,000–100,000 mi)
MechanicBuy on Amazon
Belt tension checkBelt tension gaugeToo tight wears bearings; too loose can skip teeth.
WhenEvery 5,000 mi
DIY · ModerateBuy on Amazon
BrakesPads and fluid3 items
Front brake padsFits 2019 Suzuki Boulevard S40Front pads wear faster because they do most of the braking.
WhenInspect every 4,000 mi; replace at about 2 mm of pad
DIY · ModerateBuy on Amazon
Rear brake padsFits 2019 Suzuki Boulevard S40
WhenInspect every 4,000 mi; replace at about 2 mm of pad
DIY · ModerateBuy on Amazon
Brake fluidDOT 4Never mix DOT 5 (silicone) with DOT 3/4. Check what your reservoir cap says.
WhenEvery 2 years
DIY · ModerateBuy on Amazon
Tires & wheelsYour only contact with the road3 items
Front tire110/90-19Check pressure before every ride; it's on the swingarm or frame sticker.
WhenAt 2/32" of tread, or 5–6 years old
MechanicBuy on Amazon
Rear tire130/90-15Rear tires usually wear out about twice as fast as fronts.
WhenAt 2/32" of tread, or 5–6 years old
MechanicBuy on Amazon
Tire pressure gaugeDigital or dial gaugeUnder-inflated tires make a bike handle badly and wear fast.
WhenBefore every ride
DIY · EasyBuy on Amazon
ElectricalBattery and bulbs2 items
BatteryFits 2019 Suzuki Boulevard S40Keep it on a battery tender if the bike sits for more than a couple of weeks.
WhenMost last 3–5 years
DIY · EasyBuy on Amazon
Battery tenderSmart maintainerThe best way to make a motorcycle battery last.
WhenWhenever it's parked for winter
DIY · EasyBuy on Amazon
Suspension & controlsForks, clutch and cables3 items
Fork oil & sealsFork oil per your manualOil on the fork tubes means a leaking seal. Service both forks together.
WhenEvery 2 years or 15,000 mi; seals when they leak
MechanicBuy on Amazon
Clutch & throttle cablesCable lubeCheck the free play at the lever; a frayed cable should be replaced right away.
WhenLube and adjust every 4,000–6,000 mi
DIY · EasyBuy on Amazon
Steering head & swingarm bearingsInspect for playNotchy steering or a clunk when braking points to worn bearings.
WhenEvery 12,000 mi
Mechanic

Owner's manual for the 2019 Suzuki Boulevard S40

Amazon fit lists aren't always perfect. Your owner's manual has the exact oil, capacities and part numbers for your bike, so check it before you buy.

Free official Suzuki owner's manual →From Suzuki's owner site. Pick your model and year.Printed owner's manual on Amazon →Original and reprint manuals for the 2019 Suzuki Boulevard S40.Clymer & Haynes repair manuals →Step-by-step service manuals that home mechanics swear by.

Every 3,500 miles: what's due

Pick your mileage to see what comes due at that service.

3,500 miles 2 items
  • Engine oil & filterevery 3,500 mi
    Shop part →
  • Brake pads & tires inspectionevery 3,500 mi
7,000 miles 2 items
  • Engine oil & filterevery 3,500 mi
    Shop part →
  • Brake pads & tires inspectionevery 3,500 mi
10,500 miles 3 items
14,000 miles 3 items
17,500 miles 3 items
21,000 miles 2 items
  • Engine oil & filterevery 3,500 mi
    Shop part →
  • Brake pads & tires inspectionevery 3,500 mi
24,500 miles 4 items
28,000 miles 2 items
  • Engine oil & filterevery 3,500 mi
    Shop part →
  • Brake pads & tires inspectionevery 3,500 mi
31,500 miles 3 items
35,000 miles 3 items

Other years: 2018 Boulevard S40 · All Boulevard S40 years

Motorcycle specs on PartSpec are typical values for this generation and haven't all been checked against the manufacturer yet. Confirm the oil, capacities and part numbers in your owner's manual before you buy. Read the full disclaimer

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