Selva 15HP 2-Stroke Outboard Engine Parts

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This page supports Selva 15HP 2‑Stroke outboard engines. Use it to find compatible parts, routine service guidance, and troubleshooting tips. You can also browse the main Selva parts collection categories, then scroll to the bottom of this page to start selecting parts for this engine. On the collection pages, use the Filter & Sort controls to narrow results by horsepower, year range, and part category.

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How to Identify Your 15HP Model

Find the nameplate/serial plate on the swivel bracket or transom mount. Note the model name, serial number, and shaft length.
Model suffixes typically indicate features: S/L for shaft length (short/long), R for remote, M for manual start, E for electric start.
Confirm it is a 2‑Stroke model (premix or oil‑injection) by checking the cowl decals and owner’s manual.
Measure propeller splines and hub size if you are replacing the prop; pitch choice depends on boat load and RPM at WOT.

Engine Overview

Selva 15HP 2‑Stroke (typical configuration)

Feature	Description
Configuration	Inline‑2, carbureted 2‑Stroke, manual or electric start, tiller or remote control
Common Models	15HP 2‑Stroke short/long shaft variants (tiller or remote). Specifications vary by year.
Advantages	Light weight, simple maintenance, strong hole‑shot for small skiffs and inflatables.
Notes	Use marine TC‑W3 2‑stroke oil. Keep the cooling system (impeller) fresh and verify correct prop pitch to hit rated WOT RPM.

Routine Maintenance & Service Parts

Intervals below are general guidelines; always follow the specific schedule and procedures in your Selva service manual.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hrs or annually	Inspect for metal or water (milky oil). Replace seals if contamination is found.	Lower Unit Seal Kits
Spark plugs	Every 100 hrs or annually	Use the correct heat range; check gap and replace fouled plugs.	Spark Plugs
Fuel filter (in‑line)	Every 100 hrs or annually	Replace clogged or water‑contaminated filters; keep spare on board.	Fuel Filters
Water pump impeller / kit	Inspect annually; replace ~2 seasons or sooner in sandy/silty water	Weak tell‑tale or overheat alarms usually point to impeller wear.	Water Pump Impeller Kits
Anodes (sacrificial)	Inspect every 3–6 months	Replace when ~50% depleted; choose zinc (salt) or aluminum (salt/brackish/fresh) as needed.	Anodes
Propeller & hardware check	Each trip / after strikes	Remove fishing line, inspect blades/hub, verify cotter and nut torque.	Propellers
2‑Stroke oil mix / oil injection inspection	Every outing (mixing); seasonal inspection (injection)	Use marine TC‑W3 oil (premix ratios per manual) or inspect/bleed oil‑injection lines and pump.	Hoses & Lines

Frequently Used Parts Categories

Routine Service – Service & Maintenance Kits
Cooling System – Water Pump Impeller Kits and Impellers
Lower Unit & Seals – Lower Unit Seal Kits
Ignition / Electrical – Spark Plugs, Starters, Rectifiers, Electrical Items
Fuel System – Fuel Filters, Fuel Pumps, Fuel Connectors, Hoses
Corrosion Protection – Anodes
Propulsion & Stability – Propellers, Propeller Guards, Hydrofoil Stabilizers

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale / overheat alarm	Debris on intake screen, pinched tell‑tale hose, worn impeller, thermostat sticking.	Water pump impeller kit, intake screen, thermostat (where applicable).
Hard starting / rough idle	Stale fuel, primer bulb and lines, choke/enrichment, plug condition and gap.	Fuel filter, hoses/primer bulb, spark plugs.
Poor acceleration / power loss	Prop hub slip, prop damage/pitch, restricted fuel flow, fouled plugs.	Propeller, fuel filter, spark plugs, fuel pump.
Excessive smoke (2‑Stroke)	Oil mix ratio too rich, extended cold‑start idle, stuck choke.	Spark plugs; verify oil ratio and choke function.
Gearcase noise / metal in gear oil	Low oil level, water intrusion, worn seals after line strikes.	Lower unit seal kit, drain/fill plug gaskets, prop shaft seals.

FAQs

Are parts interchangeable across different years or 15HP platforms?

Many wear items (spark plugs, inline filters, anodes, gear oil seals, and impellers) are broadly similar, but there are year‑ and model‑specific differences in housings, shafts, and ignition components. Verify against your model/serial and shaft length before ordering.

When should the impeller be replaced?

Inspect annually and replace about every two seasons, or sooner if you operate in sandy/silty water, see a weak tell‑tale stream, or trigger an overheat alarm.

How often should lower unit gear oil be changed?

Typically every 100 hours or annually. If the oil appears milky (water intrusion) or metallic (gear wear), address seals and re‑service immediately.

What information do I need to confirm part compatibility?

Provide the brand (Selva), horsepower (15HP), 2‑Stroke, model/serial number, shaft length (S/L), start type (manual/electric), and photos of the lower unit, prop, and existing parts where possible.

Ready to find parts? Browse the main Selva collections by part type, then filter by horsepower and model details.

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If you’re unsure about your model, send us a clear photo of the nameplate and the part you need and we’ll help verify compatibility.