Parsun 4-Stroke 17HP Outboard Marine Engine Parts

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Parts and service guide for Parsun 4-Stroke 17HP outboard engines. Use this page to identify compatible components, review maintenance tips, see commonly replaced parts, and troubleshoot typical issues. You can also browse the main Parsun collection. 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/section.

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How to Identify Your 17HP Model

Locate the serial/nameplate on the transom clamp bracket or swivel bracket (typically port side). Record the model code and serial number.
Model codes in this range often align with the 15–20HP family (e.g., F15/F20). Suffix letters indicate shaft length (S/L/XL), tiller vs. remote control, and regional variations.
4-stroke identification: look for an engine oil fill/dipstick and an external oil filter canister. EFI variants may have high‑pressure fuel components and an ECU label; carbureted versions have a choke/primer.
When ordering parts, match by model code, serial number, and control/shaft options to ensure gearcase, cowlings, and electrical harnesses are correct.

Platform Overview

Inline-2 4-Stroke (Carbureted)

Feature	Description
Configuration	Inline-2, SOHC 4-stroke, carbureted induction (15–20HP class)
Common Models	Examples in this family include Parsun F15/F20 carbureted variants; 17HP engines typically share many service parts with these.
Advantages	Straightforward maintenance, good fuel economy, quiet operation, and light weight.
Notes	Many wear items (impeller kits, anodes, plugs) cross over between 15–20HP gearcases; verify by model/serial for cowlings, controls, and prop fit.

Inline-2 4-Stroke (EFI)

Feature	Description
Configuration	Inline-2, SOHC 4-stroke with electronic fuel injection (EFI) in the 20HP family
Common Models	Parsun EFI variants (e.g., F20EFI family) may share ignition, fuel, and cooling components with 17HP siblings; confirm by serial.
Advantages	Improved cold starts, precise fueling, strong mid‑range torque, and lower emissions.
Notes	Fuel system parts differ vs. carb models (high‑pressure pump, injector, ECU). Always match EFI vs. carburetor when selecting parts.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small 4-stroke outboards. Always follow the procedures and schedules in your official service manual.

Item	Interval*	Remarks	Parts Link
Engine oil & filter	First 10 hrs, then every 100 hrs or annually	Warm engine before draining; replace crush washer if equipped.	Oil Filters
Gear oil (lower unit)	Every 100 hrs or annually	Inspect for water (milky oil) and metal on magnet; replace seals if contamination found.	Lower Unit Seal Kits
Spark plugs	Inspect every 100 hrs; replace as needed	Set gap to spec; replace if fouled or worn.	Spark Plugs
Fuel filter (inline/under-cowl)	Every 100 hrs or annually	Drain water/separator if equipped; replace filter element.	Fuel Filters
Water pump impeller/kit	Every 200 hrs or 2 seasons (sooner in sandy/silty water)	Restore cooling flow and overheat protection; include housing as needed.	Water Pump Impeller Rebuild Kits
Anodes (internal & external)	Inspect every 50 hrs; replace when 50% depleted	Match anode type to water (zinc–salt, aluminum–brackish, magnesium–fresh).	Anodes
Propeller & hardware	Inspect every trip; remove annually	Check for dings, line behind prop, and grease the shaft.	Propellers

*Intervals may vary by model and usage. Follow your owner’s manual.

Frequently Used Parts Categories

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

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream / overheat alarm	Inspect intake screens for debris; assess impeller condition; verify thermostat operation.	Water pump kit, intake screen, thermostat, anodes
Hard starting / rough idle	Use fresh fuel; prime system; confirm choke/EFI cold start function; inspect/replace spark plugs; check idle speed setting.	Fuel filter, spark plugs, carburetor service items or EFI components
Poor acceleration / power loss	Check prop damage/pitch mismatch; verify compression; look for restricted fuel filter; inspect plug condition.	Propeller, fuel filter, spark plugs
Gearcase noise / metal in gear oil	Confirm gear oil level; look for water intrusion (milky oil); inspect propshaft seals for line damage.	Lower unit seal kit, prop hardware, gear lube

FAQs

Are parts interchangeable between different years or platforms?

Many service items interchange within the 15–20HP twin‑cylinder family, but ignition, fuel, and control parts can differ by year and by carb vs. EFI. Always confirm using your model code, serial number, and configuration.

When should the impeller be replaced?

As a rule, every 200 hours or two seasons—whichever comes first. Replace sooner if you run in sandy/silty or weedy water, or if tell‑tale flow is weak or intermittent.

How often should gear oil be changed?

Change gear oil every 100 hours or annually. If the oil appears milky or contaminated with metal, inspect seals and internal components before further operation.

What information do I need to confirm part compatibility?

Provide the model code, serial number, shaft length, control type (tiller/remote), and whether the engine is carbureted or EFI. Photos of the nameplate and the part to be replaced are also helpful.

Ready to find the right parts? Browse our main Parsun collection by horsepower, year, and model.

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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.