The GD320 and GD410 may be getting long in the tooth, but these diesel Honda motors are still found in a lot of power equipment. Here’s what you need to know to use yours properly and keep it running for years to come.

Before Starting

Engine oil: Remove the dipstick/filler cap, wipe it clean, and reinsert it into the engine without screwing it down. Check the oil level on the dipstick: if it’s low, add some oil. Honda recommends 10W40 made for diesel engines. Screw the dipstick back into the motor.

Fuel: To check the amount of fuel, look at the gauge window next to the fuel tank cap. These engines use diesel fuel. #2 Diesel should be used at temperatures above 40°F (4°C) and #1 diesel at temperatures below 40°F (4°C) or altitudes above 5,000 feet (1,500 m). Continue reading →