Sears Gamefisher 13.5HP 2-Stroke Outboard Engine Parts

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This page is for Sears Gamefisher 13.5HP 2‑Stroke outboard engines. It helps you find compatible parts and practical service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Force collection to see compatible components that fit many Sears/Gamefisher models. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the “Filter & Sort” controls to narrow results by horsepower, year range, and part category.

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How to Identify Your 13.5HP Model

Find the nameplate/serial plate on the transom bracket (clamp area) or under the cowling. Note the model, serial, and any suffix letters.
Model suffixes often indicate shaft length (S = short 15", L = long 20") and start/control type (M = manual, E = electric). Record these for parts matching.
Gamefisher-branded 2‑Stroke models were commonly built by Force/Chrysler in this HP class; compare your tag to Force/Chrysler references for better parts alignment.
Confirm whether the engine is premix (no separate oil tank) and whether it has manual or electric start—both affect certain service parts.

Engine/Platform Overview

13.5HP 2‑Stroke Small-Outboard Platform

Feature	Description
Configuration	Inline‑2, carbureted 2‑Stroke, rope or electric start depending on model.
Common Models	Sears Gamefisher 13.5HP family; akin to Force/Chrysler 9.9–15HP-era small gearcases in many applications.
Advantages	Lightweight, simple ignition/carb service, solid thrust for small aluminum or inflatable boats.
Notes	Some water pump and lower unit parts overlap with Force/Chrysler small outboards. Always match by model/serial and shaft length; impeller/thermostat/anode styles can vary by year and gearcase.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small 2‑Stroke outboards. Always follow the official service manual for your exact model and duty cycle.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Check for water (milky oil) and metal. Service seals if contamination is found.	Force Lower Unit Seal Kits
Spark plugs	Inspect every 50 hours; replace 100 hours/annual	Check gap, replace if fouled or worn. Keep spares aboard.	Spark plug
Inline fuel filter	Every 100 hours or annually	Replace sooner if debris or stale fuel is suspected.	Fuel Filters
Water pump impeller / kit	200 hours or every 2 seasons	Replace more often if run in sandy/shallow water or if tell‑tale is weak.	Force Water Pump Repair Kits
Anodes (zincs)	Inspect every 50 hours; replace when 50% depleted	Use alloy appropriate to water type (salt, brackish, fresh).	Anodes
2‑Stroke fuel/oil mix (if premix)	Every refuel	Typical 50:1 with TC‑W3 marine oil unless your manual specifies otherwise.	Force Outboard Parts

*Intervals vary by use, environment, and model year—always consult your service manual.

Frequently Used Parts Categories

Water pump & cooling: Force Water Pump Repair Kits
Lower unit & seals: Force Lower Unit Seal Kits
Ignition / electrical: Electrical Items
Fuel system: Fuel Filters and Fuel Pumps
Corrosion protection: Anodes
Propeller safety: Propeller Guards
Trim & stability aids: Outboard Hydrofoil Stabilizers

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale or overheat alarm	Clear tell‑tale outlet, inspect intake screen, verify impeller and thermostat condition.	Water pump impeller/kit, thermostat, intake screen, hoses
Hard starting / rough idle	Fresh 50:1 premix, primer bulb firmness, choke operation, plug condition/gap, idle mixture.	Spark plugs, fuel filter, carburetor repair kit
Poor acceleration / power loss	Prop condition/pitch, compression check, ignition timing, fuel pump diaphragm.	Propeller, fuel pump kit, spark plugs
Excessive smoke (2‑Stroke)	Verify oil ratio isn’t too rich, avoid long idling, replace fouled plugs, refresh fuel.	Spark plugs, carb service parts
Gearcase noise or metal in oil	Drain oil and inspect; check for water intrusion and fishing line at prop shaft; test seals.	Lower unit seal kit, bearings, washers

Tip: When in doubt, service the water pump first—cooling issues are common on small 2‑Strokes.

FAQs

Are parts interchangeable between years or platforms?

Many small Sears Gamefisher 13.5HP engines share components with Force/Chrysler 9.9–15HP families, but there are differences by year, shaft length, and gearcase. Always match parts using your model/serial and verify dimensions before ordering.

When should I replace the impeller?

As a rule, replace every 200 hours or every 1–2 seasons. Replace sooner if the motor has been run in sandy or silty water, if the tell‑tale weakens, or after an overheat event.

How often should I change the lower unit gear oil?

Every 100 hours or at least once per year. If the oil looks milky, smells burned, or contains metal, service the seals and inspect the gears and bearings.

What information do you need to confirm part compatibility?

Please provide the model and serial number from the nameplate, shaft length (S/L), start type (manual/electric), and a clear photo of the part or area being serviced. This ensures correct water pump, anode, and seal kit selection.

Ready to find parts by horsepower, year, and model? Browse the main Force collection and use the filters to zero in on your Sears/Gamefisher 13.5HP components.

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