Zero Turn power

redneck1952 · May 11, 2021

Your right about the spark. Will check it today. Got a new fuel filter to put on too. I had a new filter that was bad once before. I pretty much exhausted just about everything I could think of. Was hoping y’all could think of something I missed. I appreciate the help

Bearsixty7 · May 11, 2021

Does it have an tachometer? RPM's should be about 3600 full throttle with blades off and 3500 with blades on.

It could be a bad coil.

5030 · May 11, 2021

Could be an engine (underpowered) issue too. What motor and width of cutting deck? I can get my gas hog 23 horse Kowalski on my M60 Tank to work real hard in taller grass.

I remember reading somewhere that the Toro ZTR's were under powered.

redneck1952 · May 18, 2021

jthibodeau89 said:
Belt over or under one of the keeper pins at the pulleys?

When did issue start? If motor loses rpm when deck is engaged, sounds like a deck drive related issue. Electric pto clutch ok?

Have had it since the I started mowing this year. Unless there is something I don't know, every PTO either engages or not,

Bearsixty7 said:
Does it have an tachometer? RPM's should be about 3600 full throttle with blades off and 3500 with blades on.

It could be a bad coil.

redneck1952 · May 18, 2021

NO Tach, never have seen one on a mower.
Don't have tach to use on a mower either. Have to find one.

Bearsixty7 · May 18, 2021

redneck1952 said:
NO Tach, never have seen one on a mower.
Don't have tach to use on a mower either. Have to find one.

A lot of the newer ones have them, My Spartan's have them. I think Scags, JD and Gravely might as well, at least some models.

Small engine ones are fairly cheap, Amazon.com : small engine tachometer

Some are meant to be mounted on the machine and left and some are portable, hand held ones.

redneck1952 · May 18, 2021

Was looking at them on the Amazon, very inexpensive. Going to order one.

Fuddy1952 · May 18, 2021

Has it always been low on power, or just happened?

Alan W. · May 18, 2021

Bearsixty7 said:
Does it have an tachometer? RPM's should be about 3600 full throttle with blades off and 3500 with blades on.

It could be a bad coil.

Thats what it was on my mower. Ran fine until the deck was engaged. Would not rev up.

Midniteoyl · May 18, 2021

Check the governor? I know you say that the gas is always treated, but have you drained and tried new? Looked to see if tank sump is clean? New fuel lines?

Gotta be fuel or spark related.. Double check all the fuel and swap the coil.