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1994-1995 Yamaha SuperJet 701 SN Review and Specs [Video]
The 1994-1995 Yamaha SuperJet 701 “SN” was the successor of the proven 1990-1993 SuperJet 650. While the new model inherited its “square nose” hull from the 650, it housed a more powerful single-carb 701 engine rated at 62.5hp. The closest relative of this ski was the smaller and faster FX-1.
If you want to find out more about this 2-stroke stand-up PWC, this post is for you.
We at JetDrift have compiled all you need to know into this Yamaha SuperJet review!
Square Nose SuperJet 701 Review
The SuperJet Family
Yamaha introduced its legendary stand-up PWC in 1990 under the model name SuperJet (a.k.a. SuperJet 650).
The “square nose” hull of this ski was carried over to the SuperJet 701, which housed a single-carb 701 engine rated at 62.5hp.
This model was upgraded in 1996 with a revamped “round-nose” hull and the twin-carb 701 engine.
The hull of this variant was revamped in 2008 and remained in production through 2020 when it was replaced by the all-new 4-stroke model.
In a nutshell, the list of all the Yamaha SuperJets ever built is as follows:
- 1990-1993 SuperJet 650 (Squre Nose)
- (1994-1995 FX-1)
- 1994-1995 SuperJet 701 (Square Nose)
- 1996-2007 SuperJet 701 (Round Nose) – GEN1
- 2008-2020 SuperJet 701 (Round Nose) – GEN2
- 2021-today 4-Stroke SuperJet
https://youtu.be/vjcIg200gRU
Yamaha SuperJet 701 SN Hull and Top Deck
The first SuperJet platform debuted on the SuperJet 650 in 1990. This platform was carried over to the 1995-1996 successor without any important changes.
Due to its square bow design, this shell was commonly known as the square-nose SuperJet hull.
Because of this, the 1995-1996 model was often referred to as square-nose Superjet 701, SJ 701 “SN,” or just the second-generation SuperJet.
In terms of dimensions, this ski measured 88.2 inches in length, 26.8 inches in width, and 26.0 inches in height.
Its smaller brother was the lesser known FX-1, which was 4.3 inches shorter and 2 inches narrower.
The dry weight of this ski was only 267 pounds, 24 pounds lighter than the SuperJet 701.
Thanks to their small dimensions and light weight, these skis were extremely nimble and offered a ton of fun for experienced riders. In return, reboarding from deep water was difficult, especially for beginners.
They also offered a great performance since they shared the same single-carb 701 marine engine.
Let’s talk about this power source in detail!
Yamaha SuperJet 701 SN Engine
Unlike the hull, the engine of the SuperJet was completely revamped for the 1996 season.
As the name suggests, the SuperJet 701 returned with a big-bore (701cc) version of the proven 650 (633cc) power mill.
The new engine was a 2-stroke, 701cc, reed-valve, single-carb, twin-cylinder 701 Yamaha marine engine. While the predecessor 650 was rated at 42hp, its bored successor delivered 62.5hp at 6250 RPM.
This engine lacked an oil injection system but featured many advanced technologies, including:
- CDI ignition
- Reed valve intake system
- Electric start
- Single Mikuni BN44 carb
- Open-loop cooling system
- NGK BR8HS spark plugs
Yamaha SuperJet 701 SN Features
Unlike its sit-down counterparts, the square-nose Yamaha SuperJet 701 came standard with just a few basic features, including:
- 4.8-gallon fuel tank
- Riding tray with deck mats
- Steering pole cover
- Fire extinguisher container
- Bow and stern rope holes
- Storage pouch
- Engine cut-off switch
- Engine shut-off cord (safety lanyard)
- Cooling water pilot outlet
- Drain plugs
- Flushing hose connector
- Fuel cock knob
Yamaha SuperJet 701 SN Top Speed and Performance
Thanks to its lightweight body and powerful 2-stroke twin engine, the claimed top speed of the square-nose SuperJet 701 was 43.5 mph. At this speed, the ski burned 6.9 gph, so its 4.8-gallon fuel tank offered a limited riding time of 42 minutes.
It was a very versatile ski that could be used for various purposes including buoy racing, pleasure riding, or doing freestyle PWC tricks.
Sure, handling this machine required body strength and athletic skills, so it was not for everyone!
Yamaha SuperJet 701 SN Specs Charts
For your convenience, we’ve listed the key specs of the 1995 Yamaha SuperJet 701 in these charts.Yamaha SuperJet 701 SN Engine Specs
| 1994-1995 Yamaha SuperJet 701 | Engine Specs |
|---|---|
| Type | 2-stroke |
| Number of cylinders | 2 |
| Displacement | 701 cm³ (42.78 cu in.) |
| Bore and Stroke | 81 × 68 mm (3.19 × 2.68 in) |
| Compression Ratio | 7.2:1 |
| Intake System | Reed Valve |
| Carburetor Type | Floatless Type |
| Number of Carburetor | 1 |
| Carburetor Starting System | Choke |
| Scavenging System | Loop Charged |
| Lubrication System | Premix |
| Cooling System | Water-Cooled |
| Starting System | Electric starter |
| Ignition System | C.D.I. |
| Ignition Timing | 15 BTDC~21 BTDC |
| Spark Plugs Type | BR8HS/BR8HS |
| Battery Capacity | 12 V 19 Ah |
| Lighting Coil | 2~4/5,500 A/rpm |
Yamaha SuperJet 701 SN Drive System
| 1994-1995 Yamaha SuperJet 701 | Drive System |
|---|---|
| Propulsion System | Jet pump |
| Jet Pump Type | Axial flow, single stage |
| Impeller Rotation | Counterclockwise |
| Transmission | Direct drive from engine |
| Jet thrust nozzle angle | 18.5~24.5° |
Yamaha SuperJet 701 SN Performance
| 1994-1995 Yamaha SuperJet 701 | Performance |
|---|---|
| Maximum Speed | 43.5 mph (70 km/h) |
| Maximum Output | 62.5 HP (46.6 kW) @ 6,250 RPM |
| Maximum Fuel Consumption | 6.9 US gal/h (26 L/h) |
| Cruising Range (at full throttle) | 0.7 hours |
| Static Thrust | 496 lb (225 kg) |
Yamaha SuperJet 701 SN Dimensions
| 1994-1995 Yamaha SuperJet 701 | Dimensions |
|---|---|
| Overall Length | 88.2 in (2,240 mm) |
| Overall Width | 26.8 in (680 mm) |
| Overall Height | 26.0 in (660 mm) |
| Dry Weight | 291 lb (132 kg) |
| Maximum people onboard | 1 |
Yamaha SuperJet 701 SN Fuel and Oil
| 1994-1995 Yamaha SuperJet 701 | Fuel and Oil |
|---|---|
| Recommended fuel | Regular Gasoline |
| Recommended engine oil | Two-cycle outboard motor oil |
| Fuel and oil mixing ratio | 50:1 |
| Fuel tank capacity | 4.8 US gal (18 L) |
| Reverse capacity | 1.45 US gal (5.5 L) |
Takeaways
As a takeaway, we’ve answered the most common questions about the square-nose Yamaha SuperJet 701:What is a “Square Nose” Yamaha SuperJet?
The square-nose SuperJet 701 (SJ 701 “SN”) was the second-generation Yamaha SuperJet featuring the single-carb 701 engine.
When did the Yamaha SuperJet 701 SN Come Out?
The Yamaha SuperJet 701 SN debuted in 1994.
What Years Did Yamaha Make the SuperJet 701 SN?
Yamaha marketed the SuperJet 701 SN from 1994 through 1995.
What Size was a Yamaha SuperJet 701 SN?
The Yamaha SuperJet 701 SN measured 88.2 inches in length, 26.8 inches in width, and 26.0 inches in height.
How Much Did a Yamaha SuperJet 701 SN Weigh?
The dry weight of the Yamaha SuperJet 701 SN was 291 pounds.
What Kind of Engine was in the Yamaha SuperJet 701 SN?
The Yamaha SuperJet 701 SN had a 2-stroke, 701cc, twin-cylinder, single-carb 701 Yamaha marine engine.
Was the Yamaha SuperJet 701 SN a 2-Stroke?
Yes, the Yamaha SuperJet 701 SN was powered by a 2-stroke engine.
How Much Horsepower Did a Yamaha SuperJet 701 SN Have?
The Yamaha SuperJet 701 SN delivered 62.5hp at 6,250 RPM.
How Much Oil Did a Yamaha SuperJet 701 SN Hold?
The Yamaha SuperJet 701 SN ran on premix.
How Much Fuel Did a Yamaha SuperJet 701 SN Hold?
The Yamaha SuperJet 701 SN was equipped with a 4.8-gallon fuel tank.
How Much Gas Did a Yamaha SuperJet 701 SN Use?
The fuel economy of the Yamaha SuperJet 701 SN was 6.9 gph at full throttle.
How Fast Did a Yamaha SuperJet 701 SN Go?
The claimed top speed of a Yamaha SuperJet 701 SN was about 43.5 mph.
Did the Yamaha SuperJet 701 SN Have a Trim?
The Yamaha SuperJet 701 SN was designed without a manual trim system.
How Much Does a Yamaha SuperJet 701 SN Cost?
The asking price of a used Yamaha SuperJet 701 varies between $3,000 and $7,000 depending on the year and its condition.
