Honda GL1500C Valkyrie Maintenance Schedule and Service Intervals

This is the maintenance schedule and associated service intervals for the Honda GL1500C Valkyrie. It’s also known as the Honda Valkyrie, or Honda Valkyrie 1500, to distinguish it from the later 1800 cc Valkyrie.

Honda also released a version of the Honda Valkyrie called the Interstate or Deluxe. These were the same basic motorcycle, but with gear for long-range touring like saddlebags/luggage and a windshield. See pics of them below.

The heart of the Honda GL1500C Valkyrie is a 1520cc liquid-cooled carburettor-fed flat six engine, the same engine from the Honda Gold Wing of the time. The difference is of course the style — the GL1500C Valkyrie is a “cruiser” bike, or a “custom”. It’s nice to look at, exposing the beautiful engine (covered in chrome), and doesn’t attract comments like “why didn’t you just get a car” from people who’ve never ridden a Gold Wing.

Plus, that flat six sound. Like a Porsche 911 when it’s on throttle (with the right exhaust).

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Honda GL1500C Valkyrie Maintenance Schedule

Below is the maintenance schedule for the Honda GL1500C Valkyrie.

The maintenance for the Honda GL1500C Valkyrie is broken into two sections: Emission-Related Items and Non-Emission-Related Items.

According to Honda, each item on the maintenance schedule requires some mechanical knowledge. Honda recommends you get a mechanic to deal with timing belts, steering head bearings, and the wheels / tires.

Legend for the maintenance schedule:

  • I: inspect and clean, adjust, lubricate, or replace, if necessary
  • C: clean
  • A: adjust
  • L: lubricate
  • R: replace

Notes (see relevant number where appropriate):

  • At higher odometer readings, repeat at the frequency interval shown below.
  • For some fluid replacements (coolant, brake/clutch fluid), follow the earlier of distance or time-based intervals.
  • The break-in service schedule is no longer relevant so is not shown below.
x 1000 mi4812162024
x 1000 km6.412.819.225.63238.4Every
Engine Oil (Pro Honda GN4 10W-40)RRR
Engine Oil Filter (HF303RC)RRR
Spark Plugs (NGK DPR7EA-9, or DPR6EA-9 for cold climates)RRR
Valve clearanceII
Air Filter (HA-8088)RRReplace more often if riding in dusty or wet conditions
Carburetor SynchIII
Cooling SystemIII
Radiator Coolant (Pro Honda Coolant)IIRReplace every 2 years
Final Drive Oil (Hyphoid gear oil SAE-80)IIR
Timing BeltsInspect every 100000 mi (160000 km)
Brake Fluid (Honda DOT 4)IIRIIRReplace every 2 years
Brake pad wearIIIIII
Brake systemIII
Brake light switchIII
Clutch Fluid (Honda DOT 4)IIRIIRReplace every 2 years
Clutch SystemIII
Fuel LineIII
Throttle OperationIII
Carburetor ChokeIII
Crankcase BreatherCCCCCCClean more often if riding in rain or at full throttle
Engine Idle SpeedIIIIII
Secondary Air Supply SystemIII
Evaporative Emission Control System (if fitted)II
Headlight AimIII
Side StandIII
Suspension (inspect for leaks)III
Nuts, Bolts, FastenersIII
Steering Head BearingsIII
Honda GL1500C Valkyrie Maintenance Schedule

Tire size and tire pressure for the Honda GL1500C Valkyrie

The Honda GL1500C Valkyrie has the following tire sizes standard, as well as the following recommended tire pressures.

TireSizeTire pressure (cold)
Front130/70-18 63H33 psi (225 kPa, 2.25 kgf/cm2)
Rear160/80-16 75H36-41 psi (250-280 kPa), depending on load weight*.
Tyres and tyre pressures for the Honda Valkyrie GL1500C

* includes the weight of the rider, passenger, all cargo and all accessories

Honda Valkyrie GL1500C Valve Clearances

Below are the valve clearances for the GL1500C Valkyrie when cold.

  • Intake: 0.15mm (0.006 in)
  • Exhaust: 0.22mm (0.009 in)

These are directly from the manual.

About the Honda GL1500C Valkyrie

The Honda Valkyrie GL1500C is the “custom” cruiser based on the old-gen Honda Gold Wing.

The Honda GL1500C Valkyrie’s liquid-cooled 1520cc six-cylinder engine is tuned for mid-range torque, giving the Valk a bunch of roll-on power and touring comfort.

The engine comes from the previous gen GL1500 Gold Wing. In the Valkyrie, it has six carburettors, an aggressive camshaft timing, and a free-flow exhaust system — this is no sedate cruiser, but a power cruiser that can really rev.

You can see a Valkyrie from a mile away, because on each side of the engine there are three individual outlet pipes snaking out to a single casing that actually houses three pipes. It’s a six-into-six system.

From idle, the Honda GL1500C Valkyrie sounds mean, like it’s ready to roll! You don’t hear many mean flat sixes these days… not in motorcycles, anyway.

Servicing the Honda Valkyrie isn’t too much of a chore. Oil and filter changes are every 8000 miles / 12800 km, like on many Honda motorcycles. Even though the schedule specifies valve clearance checks every 12000 miles (19200 km), the valves are easy to access, and they’re screw-and-locknut types so easy to adjust.

One thing that makes the Valkyrie GL1500C unique among cruisers is that it has a shaft final drive. It’s very low-maintenance — just change the oil every 24000 miles / 38000 km, like on many shaft-driven motorcycles.

The ride gear of the Honda GL1500C Valkyrie is great. The front suspension is a massive 45mm inverted fork with 130mm of plus travel.

At the rear there are twin shocks, adjustable for preload. You use the equipped pin spanner and extension bar to adjust the shock in any of five positions. (Position 1 is for a light load and smooth road, whereas higher numbers stiffen up the suspension for heavier loads.)

The Valkyrie may be a stripped-back Gold Wing, but it has a few creature comforts to help with long-range touring. For example, it has a powerful front halogen headlight with a multi reflector-type lens. On some year models in some regions you can find a reverse gear… but not most.

The dash of the Valkyrie is more basic though — a chrome-case-enclosed tachometer and speedometer with white-colored faces.

Honda GL1500 Valkyrie gauges tachometer speedometer

Manual for the Honda GL1500C Valkyrie

Honda GL1500C Valkyrie Maintenance Schedule Screenshot From Manual

The above maintenance schedule comes directly from the user’s manual for the Honda GL1500C Valkyrie.

You can download it from here.

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