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Andrew Norton1 May 2004
REVIEW

Yamaha F150A

DFI two-strokes have all the advantages of a four-stroke but with better performance, right? Well, not always, as Andrew Norton finds in this rough comparison with Mercury's 150 OptiMax
SPARKLING PERFORMANCESERVICE & MAINTENANCE

If all four-stroke outboards were this good, the future could be limited for DFI two strokes!



























































PERFORMANCE BREAKDOWN
Revs Kmh Lt/h Km/lt
600 4.8 2.0 2.4 (Dead Slow Troll)
1000 6.4 2.8 2.3 (28amp charging)
1500 10.8 5.0 2.2 (Fast idle)
2000 12.5 7.7 1.6 (Offshore trolling speed)
2500 15.5 11.8 1.3
2800 22.5 15.8 1.4 (Clean plane)
3000 23.5 14.1 1.7 (Minimum cruise)
3200 23.0 17.0 1.4 (Offshore plane)
4000 44.5 24.6 1.8 (Most efficient cruise)
5750 71.0 61.7 1.2 (WOT)

















































YAMAHA F150A
Engine type: Crossflow four-cylinder DOHC 16-valve four-stroke
Prop hp/rpm: 147.9/5500
WOT rev range: 5000–6000
Piston displacement (cc): 2670
Bore x stroke (mm): 94 x 96.2
Ignition system: Electronic engine management
Charging circuit (amps): 35
Break-in period (h): 10
Fuel delivery: Multipoint sequential EFI
Fuel type: ULP 91 RON
Oil type: Yamaha SAE10W40
Oil capacity (lt): 5.2
Gear ratio: 2:1
Transom height (in): 25
Weight (kg): 220
Rec retail: $21,680
Spare prop: $788
 
Servicing prices*
Year One: $725
Year Two etc: $505
*As per manufacturer's recommended schedule but excluding parts. All prices current March 2004. Demo F150A, prop and servicing prices from Terrace Boating, tel (02) 4987 2282; technical information from Belmont Affordable Boats, tel (02) 4947 0055.



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Written byAndrew Norton
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