Idle speed

[Toby442]

What is the regular idle rpm speed for 8 hp Briggs and Stratton genorator model 197412. Type 0124-01 please help thank you so much ?

 

[StarTech]

1750

 

[Toby442]

1750

Thank you so much ?

 

[slomo]

More like 3200 to 3600rpm. Check your engine manual.

Not recommended to idle a splash lubed engine. These are NOT car engines.

Here is the link to your manual. https://bsintek.basco.com/BriggsDocumentDisplay/default.aspx?filename=mssAIP-K_ny7tH217FzoPu

As usual, StarTech is correct. Manual does say 1750rpm.

slomo

 

[StarTech]

Yes Slomo for a generator setup you want be at 3750 off load to have the correct Hz whenever it is connected to electrical items but he ask for the idle speed of the engine and that old breast of a Briggs was designed to have an idle speed of 1750. The spec was found on the engine lookup of the Briggs Power Portal for that spec engine.

Technical Specifications​

Model Series	1974
Displacement	318
Oil Capacity	48 oz (1.4 l)
Valve Configuration	L-head
Flywheel Torque	65 lb/ft (88.0 Nm)
Governor Arm Torque	45 lb/in (5.0 Nm)
Carb Mount	85 lb/in (9.5 Nm)
Plug Gap	0.03 in (0.75 mm)
Intake Valve	.005-.007 in (.13-.18 mm)
Exhaust Valve	.009-.011 in (.23-.28 mm)
Idle Speed	1750
Air Gap	.010-.014 in (.25-.36 mm)
Flywheel Puller Part	19165
Flywheel Holder Part	19433
Connecting Rod Torque	185 lb/in (21.0 Nm)
Sump Torque	140 lb/in (16.0 Nm)
Head Torque	165 lb/in (18.5 Nm)

Just don't want be idling producing power under load. The OP may have one those generators with idle down mode. I have worked on a couple that had that feature even as old as they were.

The reason for the 3750 spec as an off load spec is the governor droop under load.

 

[slomo]

Yup I read that 1750rpm on there.

slomo