Sears 2-Stroke 8-15HP Outboard Engine Parts

(2 products)

This page covers Sears 2-Stroke 8–15HP outboard engines and helps you find compatible parts and service information. Below you’ll find maintenance tips, frequently replaced items, and troubleshooting guidance. You can also browse our main Force Outboard Parts collection for cross-compatible components used on many Sears/Gamefisher models. Scroll to the bottom of this page to start browsing parts for this engine, and remember you can use the “Filter & Sort” controls on the collection page to narrow results by horsepower, year range, and part category/section.

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How to Identify Your 8–15HP Model

Nameplate location: Look for the model/serial plate on the transom bracket or swivel bracket. A secondary sticker may be on the engine mid‑section.
Reading the code: Note horsepower, model year (or year code), and suffix letters indicating shaft length (S/L/XL) and control type (tiller vs. remote).
Platform clues: These small 2‑Stroke engines are typically twin‑cylinder, carbureted designs. 9.9 HP and 15 HP variants often share many components.
Measure the shaft: Approx. 15 in (short) or 20 in (long) from transom bracket surface to cavitation plate—helps verify propeller and gearcase parts.

Platform Overview

Small Twin-Cylinder 2‑Stroke (Carbureted)

Feature	Description
Configuration	Inline‑2, loop‑charged 2‑Stroke with carburetor; rope or electric start; tiller or remote controls depending on model.
Common Models	Sears/Gamefisher 9.9 HP and 15 HP from late‑1980s to mid‑1990s commonly found; many share ignition, cooling, and gearcase components.
Advantages	Lightweight and simple; easy dockside service; parts availability for routine maintenance remains good.
Notes	Many 9.9/15 HP variants share powerhead and cooling parts; verify shaft length and control type for correct propeller and linkage components.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small 2‑Stroke outboards. Always confirm with your specific model’s service manual and operating conditions.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Inspect for water intrusion and metal; replace seals if milkiness or leaks are found.	Lower Unit Seal Kits
Spark plugs	Inspect every 50 hours; replace 100 hours or as needed	Use correct heat range and gap; heavy 2‑Stroke operation may foul plugs sooner.	Spark plug
Fuel filter / inline filter	Every 100 hours or annually	Replace more often with old fuel tanks or if debris/water present.	Fuel Filters
Water pump impeller / kit	Every 2 seasons (or annually in sandy/silty water)	Restore cooling performance and overheat protection; replace housing if scored.	Water Pump Impeller Rebuild Kits
Anodes (zincs)	Inspect every 50 hours; replace when 50% consumed	Match anode material to water type (fresh/brackish/salt) to protect the gearcase and bracketry.	Anodes
Propeller, nut & cotter/pin	Inspect each trip; service at 100 hours	Remove to check for fishing line at seals; verify correct pitch for load and elevation.	Propellers
2‑Stroke oiling (premix / injection)	Check each refuel / seasonally	Premix at the ratio specified for your model (commonly 50:1); if equipped with oil injection, inspect lines and pump operation.	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 & Fuel Pumps
Ignition / Electrical – Electrical Items & Spark plug
Corrosion Protection – Anodes
Propulsion – Propellers

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream or overheat alarm	Debris on intake screens, pinched hoses, aged impeller, thermostat stuck.	Water pump kit, intake screen, thermostat, hoses
Hard starting or rough idle	Stale fuel, fouled plugs, clogged inline filter, choke/enrichment function.	Spark plugs, fuel filter, carburetor kit
Poor acceleration or power loss	Prop damage or wrong pitch, fuel delivery, compression variance, exhaust leaks.	Propeller, fuel pump, reeds, exhaust gaskets
Excessive smoke (2‑Stroke)	Oil ratio too rich, extended idle, low engine temp, fouled plugs.	Spark plugs, fuel filter, thermostat
Gearcase noise or metal in gear oil	Low oil level, water intrusion, prop shaft fishing line damage, worn bearings.	Lower unit seal kit, bearings, prop shaft seals, gear lube

FAQs

Are parts interchangeable between different years or platforms?

Many 9.9 HP and 15 HP small 2‑Stroke models share ignition, cooling, and gearcase items, but changes by year, shaft length, and control type affect compatibility. Always verify by model/serial and component diagrams before ordering.

When should I replace the water pump impeller?

As a preventive measure, replace the impeller every 2 seasons (or annually if operating in sand, silt, or shallow weedy water). Replace sooner if the tell‑tale weakens, the engine overheats, or the impeller shows set or cracking.

How often should the lower unit gear oil be changed?

Change at least once per year or every 100 hours. Inspect for milkiness (water) or excessive metal. If contaminated, service seals and recheck after a short run.

What information helps confirm part compatibility?

Provide model and serial number, horsepower, approximate year, shaft length (S/L), control type (tiller or remote), and clear photos of the nameplate and the part you’re replacing.

Ready to find parts? Browse the main collection by platform to locate components by horsepower, year, and model commonly used on Sears/Gamefisher engines.

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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.