Full throttle or 80 to 90%?

[johneic]

Since our mechanical injection pumps have a governor, am I wise to throttle down from full throttle or not?

 

[LD1]

What are you doing?

 

[johneic]

Usually just finish or brush mowing, both are four footers.

I just have it in my head not to run any engine at full throttle.

So lets assume our engines are governed to 90% of maximum power and I throttle back from there, then I am only running at 75% ish power? If this is true there would be no reason to throttle back?

 

[jaotguy]

as long as you are not "lugging" an engine for the task at hand, ( or going too slow for proper PTO speeds ) you are good to go .....

 

[LD1]

Run it at PTO rated speed. That is where you will get PTO rated power. Any faster "could" damage the mowers. Slower is just costing you power and performance.