Suzuki DF70A / DF80A / DF90A / DF100B

• 4 cyl
• 1.5 l (DF75A/DF90A)
• 70–100 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 ↗ (external link)
  FLERA · PDF · 2021

Spare parts

Spare parts for Suzuki DF70A / DF80A / DF90A / DF100B

Part	Part number	Note	Source
Service kit	17400-87813-0001 pcsBuy (1)	DF70A, DF80A, DF90A from 2009; includes impeller kit, oil filter, fuel filter, 4 spark plugs DCPR6E and 3 anodes	Nordwall Marin: Suzuki service kit DF70A–DF90A 2009- ↗ (external link)
Service kit	17400-87833-0001 pcs	DF70A–DF90A from 2021 and DF100B from 2018	Nordwall Marin: Suzuki service kit DF70A–DF90A 2021-, DF100B 2018- ↗ (external link)

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Related models

Suzuki DF2.5

Outboard

0.068 l · 2.5 hp · Petrol

→

Suzuki DF4A / DF5A / DF6A

Outboard

0.14 l (DF4A/DF6A) · 4–6 hp · Petrol

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Suzuki DF8A / DF9.9A

Outboard

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Suzuki DF9.9B / DF15A / DF20A

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0.33 l · 9.9–20 hp · Petrol

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Service guides

Replacing the impeller →Winterize a boat engine →

Frequently asked questions about Suzuki DF70A / DF80A / DF90A / DF100B

Where can I find the owner's manual for Suzuki DF70A / DF80A / DF90A / DF100B?

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

How many cylinders does Suzuki DF70A / DF80A / DF90A / DF100B have?

Suzuki DF70A / DF80A / DF90A / DF100B has 4 cylinders.

What fuel does the Suzuki DF70A / DF80A / DF90A / DF100B use?

Suzuki DF70A / DF80A / DF90A / DF100B runs on petrol.

Sources

• Suzuki Marine: owner's manual (PDF) ↗ (external link)
• Suzuki Marine Greece (official importer): owner's manuals ↗ (external link)
• Suzuki Marine USA: Full Line Catalog 2026 (specifications, PDF) ↗ (external link)
• Wikipedia: Suzuki (en) ↗ (external link)
• Nordwall Marin: Suzuki service kit DF70A–DF90A 2009- ↗ (external link)
• Nordwall Marin: Suzuki service kit DF70A–DF90A 2021-, DF100B 2018- ↗ (external link)