Idle speed on 1025R

[RalphVa]

Has anyone lowered their idle speed on their 1023 or 1025 or 1026? I don't like the 1,575 rpm idle. My 4010 originally came with the idle set at about 1,500. I changed it pretty quickly to the 1,000 indicated in the owner's manual. The owner's manual for the 1025R says 1,575. Think it's just for emissions, for some reason.

Ralph

 

[PsRumors]

I don't know that I would go lower. It could be strictly for emissions or it could be to keep the cylinders from wet stacking.

 

[RalphVa]

Could be that. I know better than to leave it idling slowly for a long period though. If it's only that, I'll lower it. Cannot stand the clatter all the time. Even my generator, that runs about the same speed, is far quieter, but it's inside a sound deadened enclosure.

Ralph

 

[PsRumors]

I'll be curious to hear the results. I'd like mine to idle lower.

 

[RalphVa]

I checked into lowering the idle speed today. Easy to reset the throttle cable stop, but there's a stop in the injection pump that won't let the idle speed go below 1,575. Don't know whether it's possible to relocate the arm on the injection pump speed control or not. One would have to remove the big nut holding the speed control arm and relocate it. Don't know whether that's possible.

Ralph

 

[MacTractor]

I know the manual for my 2320 clearly states that altering the low idle below the current set point will possibly void your warranty. This is the purpose for the Locknut on the injector pump.

For me, it is not worth altering for this reason.

If you think of it, there must be a good reason for it to be set at this point.

Cheers,

 

[RalphVa]

Think they've had people trying to run their small tractors with them at 1,000 rpm idle and probably ruined the bearings. I'd rather be able to run mine down like I could on the 4010 if I don't want to shut it off every time I stop and get off. I do that now, because I don't like to hear it clattering away. This one is noisier without the full side shields, too.

My diesel generator with its sound enclosure and running at essentially the same speed is very quiet.

Ralph

 

[kuboman]

Think they've had people trying to run their small tractors with them at 1,000 rpm idle and probably ruined the bearings. I'd rather be able to run mine down like I could on the 4010 if I don't want to shut it off every time I stop and get off. I do that now, because I don't like to hear it clattering away. This one is noisier without the full side shields, too.

My diesel generator with its sound enclosure and running at essentially the same speed is very quiet.

Ralph

What bearings are you referring to and why would lowering the idle speed ruin them?
I think it has more to do with usability. Too slow an idle and you run onto a stalling problem.

 

[RalphVa]

When you lug an engine, you ask it to do more work than there is oil supply to keep the bearings lubed. This can happen if people do much with the engine at idle, and idle speed is too low.

They may have set the idle speed higher to avoid cold start problems, too. I knew enough to give my 4010 about 1/2 throttle to start it in cold weather.

Suspect real reason for higher idle is emissions related though.

Ralph

 

[kuboman]

When you lug an engine, you ask it to do more work than there is oil supply to keep the bearings lubed. This can happen if people do much with the engine at idle, and idle speed is too low.

They may have set the idle speed higher to avoid cold start problems, too. I knew enough to give my 4010 about 1/2 throttle to start it in cold weather.

Suspect real reason for higher idle is emissions related though.

Ralph

You could be right but 1575 rpm seems excessive. Thats almost half if not close to 2/3 of rated rpm. I always lower the idles but of course never attempt to work it at an idle. Mostly just hate the noise of a racing engine when I'm not actually working it.