About the Yanmar 1GM & 1GM10 Engines

The Yanmar 1GM and 1GM10 are mechanically governed single-cylinder marine diesel engines producing approximately 8–10 HP. Designed for smaller sailing yachts, these engines are valued for compact size, low fuel consumption and straightforward maintenance.

Despite their simple construction, proper servicing and timely replacement of wear components are essential to maintain reliability and prevent overheating or starting issues.

Available Yanmar 1GM / 1GM10 Parts

We supply a complete range of replacement parts for the Yanmar 1GM and 1GM10 engines, including:

• Raw water pump impellers and pump components

• Oil filters

• Fuel filters

• Thermostats

• Heat exchanger gaskets and sealing rings

• Drive belts

• Engine mounts

• Circulation pump components

• Electrical components and sensors

• Starter motor and alternator parts

• Complete service kits

All compatible parts for the 1GM / 1GM10 engines are listed above in this category.

Maintenance Schedule – Yanmar 1GM Series

Typical service intervals include:

• Engine oil & oil filter: every 100 operating hours or annually

• Fuel filter: annually

• Raw water impeller: annually

• Drive belts: inspect yearly

• Cooling system inspection: every 2 years

• Valve clearance: according to service manual

Regular maintenance reduces the risk of overheating, vibration issues and premature engine wear.

Yanmar 1GM / 1GM10 Service Kits

Complete service kits are available for the Yanmar 1GM and 1GM10 engines. These kits typically include essential maintenance components such as oil filter, fuel filter, impeller and sealing parts.

Using a complete service kit simplifies annual servicing and ensures all primary maintenance items are replaced together.

(Insert internal link to your 1GM10 service kit product here.)

Frequently Asked Questions – Yanmar 1GM / 1GM10

How much oil does a Yanmar 1GM10 take?
Oil capacity typically ranges around 1.3 to 1.5 litres (1.37 - 1.58 quarts) including the oil filter. Always verify according to your specific engine manual.

Which impeller fits the Yanmar 1GM10?
The correct impeller depends on the installed seawater pump version. All compatible impellers are listed above within this category.

Are 1GM and 1GM10 parts interchangeable?
Many service components are compatible, but some parts may vary depending on production year and configuration. Always confirm compatibility before ordering.

Also Looking for Other Yanmar GM Engines?

• 2GM / 2GM20 Parts

• 3GM / 3GM30 Parts