Sears 2-Stroke 6-15HP Outboard Engine Parts

(2 products)

This page supports Sears 2‑Stroke 6–15HP outboard engines. Use it to find compatible parts and practical service information, including maintenance tips, commonly replaced items, and troubleshooting guidance. You can also browse our main Sears parts collection. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page use the “Filter & Sort” controls to narrow results by horsepower, year range, and part category/section.

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How to Identify Your 6–15HP Model

Nameplate/serial plate is typically on the transom clamp bracket or swivel bracket; some models also have a sticker on the recoil starter housing.
Model codes and suffixes can indicate shaft length (short 15" vs. long 20"), tiller vs. remote control, and manual vs. electric start. Record the full model and serial when ordering parts.
These are carbureted 2‑stroke engines. Smaller 6–9.9HP models may be single‑cylinder or small twins; 15HP models are commonly twin‑cylinder. Confirm cylinder count and ignition layout if you are matching internal components.
Check the cowling decal for oil guidance. Many small 2‑strokes use premix; some variants use oil injection. Follow the label and the official service manual.

Engine/Platform Overview

6–9.9HP Compact 2‑Stroke

Feature	Description
Configuration	Carbureted 2‑stroke; single‑cylinder or small inline‑2 depending on model/year.
Common Models	6–9.9HP 2‑stroke variants with tiller steering; manual or electric start.
Advantages	Very light weight, easy to service, simple fuel system.
Notes	Use fresh premix fuel; keep carburetor and idle circuits clean. Many wear parts cross‑apply within this HP range—always verify by model/serial.

15HP 2‑Stroke Twin

Feature	Description
Configuration	Inline‑2, carbureted 2‑stroke; manual or electric start; short or long shaft.
Common Models	15HP 2‑stroke with tiller or remote options, typical of classic small‑craft setups.
Advantages	Strong hole‑shot for its size, compact and easy to maintain.
Notes	Water pump and gearcase service are critical. Carb jetting and ignition parts can vary by year—match parts using full model/serial.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small 2‑stroke outboards. Always follow your engine’s official service manual and cowling decals for exact procedures and specifications.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Inspect for water intrusion (milky oil). Replace seals if contamination is present.	Lower Unit Seal Kits
Spark plugs	Every 100 hours or annually	Check gap and color; replace if fouled or worn. Keep spares onboard.	Spark Plugs
Fuel filter / in‑line filter	Every 100 hours or seasonally	Replace clogged or ethanol‑degraded elements; verify proper fuel flow.	Fuel Filters
Water pump impeller / kit	Every 2–3 seasons or 200 hours	Critical for cooling; service sooner if telltale is weak or intermittent.	Water Pump Impeller Rebuild Kits
Anodes (sacrificial)	Inspect quarterly; replace ≤ 50% remaining	Ensure clean metal‑to‑metal contact. Do not paint anodes.	Anodes
Premix oil ratio / oiling system check	Each refuel / seasonally	Follow cowling decal or manual. Verify choke/enrichment operation and fuel hose condition.	Service & Maintenance Kits
Propeller & hardware inspection	Each trip	Look for bent blades, dings, and fishing line at the prop shaft. Re‑grease spline.	Propellers
Fuel lines & primer bulb	Annually	Replace cracked or soft hoses; ensure ethanol‑resistant components.	Hoses

Frequently Used Parts Categories

Routine Service: Service & Maintenance Kits
Cooling System: Water Pump Impeller Rebuild Kits
Gearcase & Seals: Lower Unit Seal Kits
Fuel System: Fuel Filters and Fuel Connectors
Ignition / Electrical: Electrical Items
Propulsion: Propellers
Corrosion Protection: Anodes

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak telltale stream or overheat alarm	Clear intake screens; ensure telltale hose isn’t kinked; inspect thermostat and impeller condition.	Water pump kit, thermostat, intake screen, gaskets
Poor acceleration or power loss	Inspect prop for dings/cavitation; check for fouled plugs; clean carb jets; confirm tank vent open and fuel filter not clogged.	Propeller, spark plugs, fuel filter, carburetor kit
Hard starting or rough idle	Prime fuel system (firm bulb); check fuel connector and hoses for air leaks; verify choke/enrichment operation.	Fuel connector, hoses, carburetor rebuild parts, spark plugs
Excessive smoke (2‑stroke)	Confirm premix ratio per cowling decal; ensure choke isn’t stuck closed; verify thermostat allows warm‑up.	Spark plugs, carburetor service parts, thermostat
Gearcase noise or metal in gear oil	Check oil level/condition; inspect prop shaft for fishing line; pressure test gearcase if water intrusion is suspected.	Lower unit seal kit, bearings, prop shaft seals

FAQs

Are parts interchangeable between different years or platforms?

Some service items (plugs, impellers, anodes) can overlap across years, but carburetor jets, ignition components, and gearcase details often change. Always confirm with full model and serial to ensure a correct match.

When should I replace the impeller?

For small 2‑strokes, replace the impeller every 2–3 seasons or about 200 hours—earlier if you operate in sandy/muddy water or notice a weak/intermittent telltale or any overheat event.

How often should the gear oil be changed?

At least once per season or every 100 hours. If the oil appears milky or you see metal on the drain plug magnet, service immediately and pressure test the gearcase to check for leaking seals.

What information do you need to confirm part compatibility?

Provide the full model number, serial number, shaft length (S/L), start type (manual/electric), and clear photos of the nameplate and the failed part. This ensures we match the correct components the first time.

Ready to find what you need? Browse our main Sears collection and refine by horsepower, year, and model to locate compatible parts.

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