Yamaha F70

• 4 cyl
• 996 cm³
• 70 hp
• Petrol

Save my engine

Troubleshooting

Starting problems

• Boat engine won't start after the winter
• Boat engine won't start when warm

Runs rough, stalls or loses power

• Boat engine dies at idle or when shifted into gear
• Boat engine hesitates or dies on acceleration
• Boat engine stops after a while

Smoke and exhaust

• The boat engine smokes blue – burning oil
• White smoke from the boat engine exhaust

Oil, water and fuel

• Petrol smell in the boat – fuel leaking from the engine
• Water in the fuel or tank of the boat engine
• Water in the engine oil – the oil is grey or milky

Electrics, alarms and fault codes

• Battery not charging – charge warning light is on
• The alarm is sounding – what do the warning lights mean?
• Oil pressure alarm on the boat engine – low oil pressure

Drive, gearbox and trim

• Trim not working – the drive won't go up or down
• Gear will not engage or jumps out

Outboard

• The outboard only runs on choke or dies at idle
• Outboard not cooling – no tell-tale stream
• The outboard won't start
• The outboard loses power or won't reach full revs
• Water in the outboard's gearcase oil

Manuals

• Official

  Owner's manual (F(T)50/F(T)60/F40 IT/F70) ↗ (external link)
  SV · PDF · 2026
• Official

  Owner's Manual (F(T)50/F(T)60/F40 IT/F70) ↗ (external link)
  EN · PDF · 2026

Spare parts

Spare parts for Yamaha F70

Part	Part number	Note	Source
Service kit 100 h	6BTW006B00001 pcsBuy (1)	Yamaha service kit for F30B, F40F, F40H, F40G, F50H, F60F, F70A	Nordwall Marin: Yamaha 100h F30B, F40F, F40H, F40G, F50H, F60F, F70A ↗ (external link)
Service kit 300 h	6CYW006C00001 pcsBuy (1)	Yamaha service kit for F40G, F70A	Nordwall Marin: Yamaha 300h F40G, F70A ↗ (external link)

Exploded views & parts catalogs

• Official

  Yamaha Motor Europe: parts catalog ↗ (external link)

  Genuine parts with exploded diagrams, search by model.

  SHOP

Parts shared with

• Yamaha F30 / F40 2 shared part numbers

Listings for Yamaha F70

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Service guides

Replacing the impeller →Winterize a boat engine →

Frequently asked questions about Yamaha F70

Where can I find the owner's manual for Yamaha F70?

Links to owner's manuals and workshop manuals are available under Manuals.

How many cylinders does Yamaha F70 have?

Yamaha F70 has 4 cylinders.

What fuel does the Yamaha F70 use?

Yamaha F70 runs on petrol.

Sources

• Yamaha Motor Europe: Owner's manual (F(T)50/F(T)60/F40 IT/F70) (PDF) ↗ (external link)
• Yamaha Motor Europe: Owner's Manual (F(T)50/F(T)60/F40 IT/F70) (PDF, specifications) ↗ (external link)
• Yamaha Motor Europe: manual library (Outboard Engines) ↗ (external link)
• Yamaha Motor Europe: owner's manuals (search by model) ↗ (external link)
• Yamaha Outboards: model overview and ID label location (PDF) ↗ (external link)
• Wikipedia: Yamaha Motor Company (en) ↗ (external link)
• Nordwall Marin: Yamaha 100h F30B, F40F, F40H, F40G, F50H, F60F, F70A ↗ (external link)
• Nordwall Marin: Yamaha 300h F40G, F70A ↗ (external link)