Yamaha F25SWHC 25HP Outboard – 15in Shaft, Electric, Tiller
For weekend trips, Yamaha F25SWHC puts 25 horsepower to work. A 15-inch shaft pairs with tiller steering. Anglers rely on it for predictable starts, trip after trip. Boaters pick it for a straightforward, low-maintenance setup.
- 25 horsepower, ready to run
- Fits 15-inch transom height
- Tiller steering, simple setup
- Light enough for easy mounting
- Straightforward to service and maintain
Description
Freezing morning duck hunts become comfortable once the Yamaha F25SWHC engages its push-button electric ignition. Drawing from a massive 432cc displacement, this twin-cylinder EFI block forces aggressive low-end torque, pushing heavily loaded aluminum jon boats upstream against strong river currents. Verifying your exact transom height guarantees this electric start short shaft tiller outboard places the water intakes deep enough for safe operation.
Clear submerged rocky obstacles safely in shallow creeks by utilizing the manual tilt bracket as a direct physical lifting aid. You grab the rear cowl grip to pull the 60 kg gearcase upward instantly to prevent devastating impacts. Yamaha engineers the lower unit using impact-deflecting marine aluminum. This structural barrier stops galvanic decay completely when repowering standard transom utility boats in harsh brackish environments.
Key Features of Yamaha F25SWHC
- Turn-Key Electric Start: Engages the flywheel instantly via 12-volt battery power, eliminating shoulder strain completely during freezing early morning launches.
- 15-Inch Standard Shaft: Matches low dinghy transoms perfectly, preventing lower unit drag and maximizing fuel efficiency on light inflatable hulls.
- Multi-Function Tiller Handle: Concentrates shift and throttle inputs squarely in your grip, sharpening handling response in narrow twisting creeks.
- 16-Amp Charging Alternator: Outputs constant electrical current while running, keeping small deep cycle batteries topped off for navigation lights.
- Manual Tilt Bracket: Features a rigid mechanical lock, safely holding the gearcase out of the water physically while moored at the dock.
- 432cc Inline-Two Block: Produces massive low-end torque internally, lifting heavily loaded 14-foot rigid dinghies onto plane much faster.
- Battery-Less EFI Backup: Atomizes fuel perfectly using internal magnetic power, guaranteeing reliable cold-weather pull starts if your primary battery fails.
- Low-Copper Marine Alloy: Blocks severe galvanic decay physically, protecting the powerhead block across decades of daily saltwater exposure.
- 2.08:1 Gearcase Ratio: Multiplies engine torque effectively, translating the 432cc displacement into relentless pushing force for loaded hunting skiffs.
- Clean Four-Stroke Combustion: Burns unleaded fuel highly efficiently without messy two-stroke oil mixing, keeping your tender completely free of oil slicks.
Why Choose Yamaha F25SWHC
You buy this motor to keep rigging dead simple on a standard 15-inch transom boat while retaining electric start convenience. It offers zero remote steering capability and lacks heavy power tilt components. Finding a reliable electric start portable outboard solves heavy payload limits on small hulls.
- Weigh your boat to verify it safely handles this specific 60 kg engine block mass.
- Check the tiller handle sweep path to confirm it clears your rear seating bench.
- Keep local lakes clean by running highly regulated four-stroke engine configurations.
Ideal Application and Vessel Fitment
This ultra-portable 15-inch outboard thrives on small inflatable tenders, flat-bottom jon boats, and rigid fiberglass dinghies requiring minimalist power with maximum convenience. Because it features push-button electric starting paired with advanced EFI, operators gain absolute ignition reliability for remote area fishing. The direct tiller control provides complete directional thrust, making this lightweight 25hp electric start outboard an incredibly nimble propulsion choice for navigating crowded anchorages and tight backwater creeks safely.
Warranty, Support and Maintenance
Authorized recreational operation receives a 3-Year Pleasure Warranty alongside exceptional factory support. Registered commercial applications fall under a strict 1-Year Commercial Warranty with zero corrosion coverage applied to the block. Scheduled maintenance requires replacing gearcase lubricants and changing oil filters at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. For product details and order support, Mulmotor offers assistance before your purchase is placed.
Yamaha F25SWHC Specs
| Brand | Yamaha |
| Full Model Code | F25SWHC |
| Country of Origin | Thailand |
| Engine Family/Series | Portable |
| Engine Type | Inline-2, SOHC, 4-Stroke |
| Displacement | 432 cc |
| Horsepower | 25 HP |
| Full Throttle RPM Range | 5000-6000 |
| Fuel Induction System | EFI (Battery-less) |
| Alternator Output | 16 Amps |
| Gear Ratio | 2.08:1 |
| Shaft Length | S: 15in |
| Dry Weight | 60 kg (132 lbs) |
| Bore x Stroke | 65.0x65.1mm |
| Starting & Steering System | Electric Start / Tiller Handle |
| Trim/Tilt Method | Manual Trim & Tilt |
| Oil Capacity | 1.1L |
| Recommended Fuel | 87 Octane |
| Standard Warranty | 3-Year |
| Application | Aluminum skiffs requiring easy electric start on a 15in transom. |












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