Honda GCV190, 187cc overhead cam
The GCV190 is the larger sister of the GCV160 and shares its owner's manual, plug and oil spec. Honda used it on the HRX217 mower before moving to the GCV200.
GCV190187cc OHCVertical shaft
Specs and part numbers at a glance
- Model sticker reads
- GCV190 plus a type code, for example GCV190A or GCV190LA
- Displacement
- 187 cm3 (11.4 cu in)
- Bore x stroke
- 69 x 50 mm
- Spark plug
- NGK BPR5ESNGK BPR6ES on pressure washer versions.
- Plug gap
- 0.70–0.80 mm (0.028–0.030 in)
- Oil
- SAE 10W-30, API SJ or later. Refill 0.35–0.41 L (12.0–13.5 oz)Dry engine holds 0.50 L (17 oz).
- Fuel
- Unleaded, 86 pump octane or higher, up to 10% ethanol. Tank 0.93 L (0.25 gal)
- Air filter
- Paper element. 17211-ZL8-023 is listed for GCV190; a Honda dealer lists 17211-Z8B-901 for GCV190A and GCV190LA.Check your type code in Honda's parts catalog.
Find the model number
Honda puts the engine model on a sticker on the engine. It starts with G, so this one reads GCV190. The serial number is stamped into the side of the engine: 4 or 5 letters followed by 7 digits. The engine type code (up to 4 characters) is stamped close to the serial number. You need the type code to pick the right parts in Honda's parts catalog. This is marker D on the drawing below.
Where the number is stamped
- ABriggs & Stratton: stamped into the metal just above the spark plug. You may need a flashlight.
- BBriggs & Stratton: stamped on a small metal plate between the valve cover and the air filter.
- CBriggs & Stratton: stamped on the sheet metal above the muffler, which can be on either side.
- DHonda: the model (it starts with G, like GCV170) is on a sticker on the engine. The serial number and type code are stamped into the side of the engine.
Mowers that use this engine
Honda press materials list this engine on the mower below.
| Mower | Model no. | What the maker lists |
|---|---|---|
| Honda HRX217 (for example HRX217K2VKA) | HRX217 | Honda press release: the HRX217K2VKA uses the GCV190. Later HRX models use the GCV200. |
Parts and part numbers
Check the number against the parts list for your exact model before you order.
| Part | Part number | Notes |
|---|---|---|
| Spark plug | NGK BPR5ES | Honda owner's manual |
| Air filter element | 17211-ZL8-023 | Retailer fitment: GC/GCV160 and GC/GCV190 |
| Air filter element (some types) | 17211-Z8B-901 | Honda dealer lists it for GCV190A and GCV190LA |
Tools you need
- Spark plug wrench
- Wire-type gap gauge
- Oil drain pan
- Clean rags
- Gloves
Maintenance and repairs, step by step
Replace the spark plug
Check once a year or every 100 hours. Replace every 2 years or 200 hours.
| 01 | Pull the cap off the spark plug and clean dirt away from around it. | Engine cold. |
| 02 | Remove the plug with a spark plug wrench. | |
| 03 | Replace it if the electrodes are worn, it is badly fouled, or the sealing washer is damaged. | NGK BPR5ES on mowers. |
| 04 | Measure the gap and set it to 0.70–0.80 mm (0.028–0.030 in) by carefully bending the side electrode. | |
| 05 | Thread the plug in by hand so it can't cross-thread. | |
| 06 | Tighten with the wrench: a new plug 1/2 turn after it seats, a reused plug 1/8 to 1/4 turn. | From Honda's owner's manual. Too loose and it overheats; too tight and it can strip the head. |
| 07 | Push the cap back on. |
Clean or replace the air filter
Clean every 3 months or 25 hours; more often in dust.
| 01 | Unclip the air cleaner cover. | |
| 02 | Take out the paper element. | Element 17211-ZL8-023 or 17211-Z8B-901. |
| 03 | Tap it several times on a hard surface, or blow compressed air at no more than 30 psi (207 kPa) through it from the engine side. | Never brush it; that pushes dirt into the paper. |
| 04 | Wipe the case and cover with a damp rag. Keep dirt out of the air duct that leads to the carburetor. | |
| 05 | Refit the element and the cover. | Replace the element every 2 years or 200 hours, or sooner if it is damaged. |
Change the oil
After the first month or 5 hours, then every 6 months or 50 hours. Every 25 hours under heavy load or in hot weather.
Safety Let a hot engine cool enough to touch the muffler area safely, and work outdoors. Keep sparks and flames away from the fuel tank.
| 01 | Run the engine briefly so the oil is warm, then stop it and pull the plug cap. | Warm oil drains faster. |
| 02 | Turn the fuel valve OFF if the engine has one. | |
| 03 | Remove the oil cap and dipstick. Tip the engine toward the oil filler neck and let the oil drain into a pan. | |
| 04 | Set the engine level and refill with SAE 10W-30 (API SJ or later). Refill amount is about 0.35–0.41 L (12.0–13.5 oz). | Some oil stays in the engine, so use the dipstick, not the bottle. |
| 05 | Check with the dipstick inserted but not screwed in. Fill to the upper mark only. | |
| 06 | Refit the cap and take the old oil to a recycling point. |
Honda maintenance schedule
Whichever comes first, months or hours.
| When | What to do |
|---|---|
| Before each use | Check oil level. Check air filter. |
| First month or 5 hours | Change oil. |
| Every 3 months or 25 hours | Clean air filter (more often in dust). |
| Every 6 months or 50 hours | Change oil. Clean air filter. Check flywheel brake. |
| Every year or 100 hours | Check and adjust spark plug. Clean spark arrester if fitted. Idle speed, fuel tank and filter, valve clearance: dealer. |
| Every 2 years or 200 hours | Replace air filter. Replace spark plug. Check fuel lines (dealer). |
Troubleshooting by symptom
| Symptom | Likely cause | What to do |
|---|---|---|
| Won't start | Fuel valve off, choke off on a cold engine, or flywheel brake lever not held | Fuel valve ON. On manual-choke types, choke for a cold start. Hold the blade control bar against the handle. |
| Won't start after storage | Old fuel | Drain the tank and refill with fresh gasoline. Honda lists bad fuel as a main cause of hard starting. |
| Starts, then floods or won't restart | Spark plug wet with fuel | Dry the plug, reinstall, and start with the choke OFF and throttle at FAST. |
| Lacks power | Clogged air filter or old fuel | Clean or replace the air filter, then refuel with fresh gasoline. |
| Still won't run after the above | Clogged fuel filter or carburetor, ignition fault, stuck valves | Honda sends these to a dealer or the shop manual. See our carburetor job for float bowl cleaning. |
| Blade keeps turning after you let go of the bar | Worn flywheel brake | Stop using the mower and take it to a dealer. Do not bypass the brake. |
Owner's manuals and parts lookups
These go to the maker's own sites.
- Honda GCV160 / GCV190 owner's manual (PDF) Specs, schedule, plug, oil
- Honda engine owner's manuals
- Honda: find the model and serial number
- Honda engine parts catalog Needs the type code
Something wrong or missing?
Tell us the full model number on your engine and what you found.