GX240 • GX270 • GX340 • GX390 (UT2/RT2) Technical Manual
© 2010 American Honda Motor Co., Inc — All Rights Reserved 17
To reduce resonance, install a stay between the engine and attachment as shown below.
Starting Performance
The engine must be able to start with the attachment at the lowest recommended ambient temperature.
If the starting load of the attachment is too large when operating the starter motor, provide a clutch so you can separate
the load from the engine when operating the starter.
Due to changes in oil viscosity, there will be an increased drag in attachments such as hydraulic pumps or gear cases
as temperature drops. Start the engine with the ambient temperature at the lowest temperature recommended for
operating the attachment. Verify that the attachment, as well as the engine, can start and operate normally.
Select the proper oil viscosity for the attachment according to the attachment’s working temperature.
Minimum engine cranking voltage 10.2 Vdc
Minimum engine cranking rpm 474 rpm
Maximum engine cranking amperage 50 A