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1GM Marine

Yanmar 1GM · 1GM family — specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine confirmed

The Yanmar 1GM is a Yanmar-designed single-cylinder marine diesel (first-gen GM series source

See Yanmar / tractor part equivalents →

7.5 hp5.5 kW
1-cylcylinders
1980–1983year range (approx)
NAaspiration

first-gen GM 1-cyl raw-water; 7.5hp (toad model-ID); smaller CI than 1GM10 — bore/stroke verify

📋 Full specifications 🚜 Industrial / tractor equivalents 1123 🔧 Aftermarket 34
Cheaper-part coverage · 4/8
🚜 Base engine ✓🌀 Impeller ✓💧 Raw-water pump🛢️ Oil filter ✓⛽ Fuel filter🌡️ Thermostat ✓➰ Belt⚓ Anode

A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.

📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet

External links — we host none of these documents.

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Category
Marine
Engine family
1GM
Year range (approx)
1980–1983
Cylinders
1
Rated output
7.5 hp (5.5 kW)
Max rpm
3600
Aspiration
Naturally aspirated

Related 1GM engines

1GM101GM10C1GM10V

Open the full interactive engine page → (specs, cross-references & parts).