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FAQ + Answers

FAST OUTBOARD. EVEN FASTER ANSWERS.

This is just about everything you need to know about the V MAX SHO® 150. Click a question category below for answers on everything from performance to rigging to maintenance. For broader questions about Yamaha Outboard ownership and maintenance, visit our General FAQs. Your local Yamaha Marine Dealer is also a good resource—especially for answers to more specific questions about your rig and outboard.

Performance

Do you have any performance numbers on the V MAX SHO® 150?

Yes. In our tests, on a Skeeter® TZX190, it is more than 28 percent quicker in hole shot out to 200 feet than Yamaha’s F150, and more than 34 percent faster than a competitive 150-hp four stroke. Within one-tenth of a second with V MAX® HPDI®. Faster top speed, too—even faster than our V MAX HPDI 150.

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How are the V MAX SHO® 150’s performance gains achieved?

Greater efficiency is achieved through more displacement, large valves and variable camshaft timing (VCT).

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On what type of boats will you see the new V MAX SHO I-4 models?

Yamaha’s new I-4 four stroke V MAX SHO 115, 150 and 175 hp models are well suited for a variety of lighter weight high-performance fishing hulls such as bass boats, multi-species boats, flats boats and inshore bay boats.

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What does SHO stand for, and what does it represent?

Super High Output—two-stroke performance with four-stroke benefits.

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What is VCT and how does it affect performance?

Variable Camshaft Timing (VCT) allows the motor to breathe, boosting low- and mid-range performance.

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What type of fuel does the V MAX SHO® 150 need?

Use readily available 89 octane for best performance. It doesn’t require premium octanes like 91, 92 and 93.

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Engineering/Technology

Does the V MAX SHO® 150 use the plasma fusion process?

No. That’s not needed in this model. SHO is a level of performance, not a level of technology.

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How are the performance gains achieved?

Greater efficiency is achieved through more displacement, large valves and variable camshaft timing (VCT).

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Is the V MAX SHO® 150 available in a 25" shaft?

No. It’s available only in a 20-inch mechanical control.

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Is the V MAX SHO® 150 basically the same engine as the Yamaha four-stroke F150?

No, it’s a completely new block, has larger displacement and includes variable camshaft timing and large valves. The only similarity to the F150 is its weight.

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What is mechanical control and where is that preferred?

The V MAX SHO® 150 uses conventional cables to operate shift and throttle, which is more popular. It’s also compatible with a vast majority of foot throttles.

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What is VCT and how does it affect performance?

Variable Camshaft Timing (VCT) allows the motor to breathe, boosting low- and mid-range performance.

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What makes the V MAX SHO® 150 so different from other 150s?

The V MAX SHO® 150 marks the first time that the weight and power of a two stroke has been combined with the benefits of a four stroke (smooth, clean, quiet, outstanding fuel efficiency) in a 150-horspower outboard. It’s designed specifically for smaller, high-performance bass boats, which are growing in popularity. It’s also ideal for lightweight flats boats and even pontoons.

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What models is the V MAX SHO® 150 available in?

It’s available in a 20-inch, but not in a 25-inch.

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What type of fuel does the V MAX SHO® 150 require?

Use readily available 89 octane for best performance. It doesn’t require premium octanes like 91, 92 and 93.

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Maintenance

Does the V MAX SHO® 150 require any special maintenance?

No. Nothing unusual. Just follow the standard recommendations in your owner’s manual.

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What type of fuel does the V MAX SHO® 150 require?

Use readily available 89 octane for best performance. It doesn’t require premium octanes like 91, 92 and 93.

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Rigging/Accessories

Have any special propellers been developed for the V MAX SHO® 150?

V MAX SHO® propellers are developed around high-performance four-stroke technology. There are now 22-inch and 23-inch pitches specifically for use with the V MAX SHO 150. This propeller series also provides 1-inch pitch increments from 22 to 27 inches, to fine-tune performance.

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What is mechanical control and where is that preferred?

The V MAX SHO® 150 uses conventional cables to operate shift and throttle, which is more popular. It’s also compatible with a vast majority of foot throttles.

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Test-Drive/Buy

On what types of boats will we see the new V MAX SHO® 150?

It’s mainly targeted at bass boats, but will work great on flats boats and even pontoons. Anywhere a 150-hp 20-inch outboard is desired.

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