How to adjust the RPMs on your Scag lawn mower
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- čas přidán 24. 09. 2020
- A common solution to poor cut quality is adjusting your engine RPMs. Low engine RPMs can result in low blade tip speed which is never good when you are cutting grass. Luckily this can be fixed with a simple screwdriver and a little knowledge.
To see a more in depth discussion of the many adjustable features on a Scag mower click here!
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I've been setting my engines at 3850 no load since I owned a Dixie chopper 23 years ago. Have never had a problem with kohler or Kawasaki at that setting. Never had a vanguard.
We recommend staying within the engine manufacturer's recommendation. Especially if the unit is under warranty.
How do you adjust the RPM’s on a ECV740 EFI engine? I do not see a simple rpm adjust screw anywhere. Thanks for your help in advance!
Adjusting RPMs can be tougher on EFI motors. If it has a mechanical governor you can adjust the screw on the governor. If it has an Electronic governor there is nothing you can do without the Kohler software. This is where an authorized Kohler dealer would be needed. FYI you can find your service and owner's manual for that engine here: kohlerpower.com/en/engines/manuals
Could you please tell me which tach you are using? All the ones I looked at are corded. Thanks.
DTI fast-tach tachometer. It is a good wireless one.
Question on FT730V kawasaki EFI can they be adjusted with the turn of a screw or is it all done with software?? thanks...
Thanks for your question John! The FT730V 26hp EFI engine is computer adjusted only. Sorry for the bad news!
Is it at wide open throttle that you set it at?
yes sir! wide open throttle, no load.
On the tachometer that you are using, do you have it set at a 4 cycle 2 cylinder for a 37 vanguard efi or a 4 cycle 1 cylinder?
Tachometers vary a lot depending on model and manufacturer. We highly recommend bringing this or any other questions to an authorized Vanguard dealer. Sorry we cannot be more help on this one!
On the Kawasaki engines is the screw the same screw that adjusts idle ?
Most likely not. Which Kawasaki engine do you have? There are multiple different Kawi engine families and we would need to know which one to help. Thanks!
I recently replaced the throttle cable because it broke.
Ever since I did it's been a lot slower and cant even go up a hill any more.
Would you think this is one of the reasons why?
I can literally be sitting on a hill with both levers all the way farward and neither of the wheels will spin.
I noticed this before I replaced the cable but since I replaced it it's gotten a lot worse.
Going to bring it to the dealer tomorrow if I can't get it fixed.
It could be yes. If you didn’t set the throttle cable correctly it won’t pull the butterfly all the way open which will cause it to not run full throttle. Hopefully that makes sense. A dealer visit might be a good idea, hopefully its a simple fix!
Same issue here.
Did you find a fix?
It’s 100 percent the problem
Yes, I did fix it. Turns out it was a mix between the throttle cable not being set enough and the hydro pumps having a loose bolt from when the dealer did a hydro fluid swap. After I tighted the bolt on the hydro & re set the throttle cable, everything worked fine. It's been running strong all season.
@@youdontknowmyname6956 sounds like the release valve. The big bolt on back or side. You open that if you ever have to push the mower. It releases the pressure. If you push it without releasing you can cause some serious damage I believe
Is the process different for fuel injection Kawi motors?
yes, Kawasaki fuel injected motors are set from the factory and cannot be adjusted mechanically. You'll need to bring it to your local dealer for RPM adjustment.
What should vanguard 37 EFI rpm be with no load?
3750 is recommended by vanguard! We mention the number towards the end of the video. Thanks for your question!
@@KPMExceptional thanks so much...I was at 3100 no load from factory/dealer
Just got a new scag 61” tiger cat 2. Has the 32BV engine. Noticed she bogs up hill with blades on. Any suggestions
Every mower is going to bog up hill with the blades on. These are small engines not v8s
@@optimuscrime608 friend has the 52” and his doesn’t do anything. Mine done with the blades off. Figured that out when I dropped it off at dealer.
What’s the part# for the rpm meter
no part number for it. the RPM meter was bought off Amazon - you can learn more info in the video or in the comments below. thanks!
I have a vanguard 37 efi. My tach shows it running at 2300 rpm wot but it doesn’t sound that slow.
It sounds like your machine may have an issue. Please contact your local dealer for further troubleshooting. Fyi we mention in the video that the true rpm’s for the 37 hp vanguard efi is the number you got off the spark plug times 2! It’s possible your machines rpm’s are set way too high. Your dealer should be your next stop.
@@KPMExceptional might call them tomorrow. I compared it to my dad’s 31 vanguard and it sounds the same at idle at wot. Not like it’s revving that high. But I’ll ask if they can check it out.
@@seabass22 Always a good idea to get the expert opinion! Good luck.
@@KPMExceptional okay so I just checked and it’s reading 1900 🧐
It was saying 2300. I think something was stuck, because I was mowing and the whole reason I got to looking was it dropped rpms all of a sudden before I put it on trailer. Oh well. I’ll monitor it.
So what should the rpm’s be set on the vanguard 37hp?
I’m several different answers from 3700 to 3400?
What is correct
Where do you do it on the Kawasaki efi?
26hp
thanks for your question! Actually, it appears to be more involved on this engine than the ones we covered in this video. We are putting together the info to share. Thanks for your patience!
Ok so we got the final word. Just to be clear, this is the 26HP Kawi FT engine that was used on the promo model Tiger Cat 2 this past year. Spec number is FT730V-AS42R. You can use a tachometer to check the rpms of the engine. You should be able to see if it is running within spec or not. The manual we found on Kawi's website has 3,600 as the proper high idle rpms for just this one specific engine. Remember, other Kawi engines rpm spec may vary.
Unfortunately, it cannot be adjusted easily. To adjust RPMs the unit will need to be taken to a dealer. This series of engine is flashed at the factory, and cannot be easily adjusted without special equipment.
KPM Exceptional yes that is the engine. Ok thanks for your information.
I have the same pulse tach, Oppama 1000R. Which position (P2142 or P2244) do you use for a 2022 Briggs & Stratton Vanguard 37 HP EFI?
3700 RPM still applies? Because my manual states Idle Speed 1750 RPM and Mechanical Type with Variable Speed Control Set at 3600 RPM.
We use position P2142. As for RPMs we cannot recommend anything outside of the engine owner's manual. Your local dealer may have other more local info about rpms for you, too. Thanks for your comment!
Take it to the scag dealer lol and spend money we don’t got
Or you can adjust by following this procedure! Some engines just need special tools. That’s a decision by the engine manufacturer unfortunately!