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View Full Version : Calling all Exmark Navigator experts!!!!


fess
01-07-2013, 04:51 PM
Hey guys, I have a 48" Exmark Navigator. I am having an issue with making marks on lawns. It doesn't happen all the time but I have tried going slower in turns and other tricks. I have been told I'm too heavy for the machine. I'm 6 feet and 270 pounds. I just don't agree with it but I had my worker do most of the mowing this year because I was making marks and I went to weedwhacking. Which is not my favorite....well I need to figure this out because I'm going back out on my own and gotta stop the marks!!!! Help!!! Thank you....

kawasaki guy
01-07-2013, 05:37 PM
Do you have any pics of the ruts? and machine?

fess
01-07-2013, 07:29 PM
No I dont specifically have any of the ruts and the machine is put away in my trailer for the season. But they look just like a walker if your not familiar.

I was told to try putting more air pressure in the tires from my exmark dealer. So I was going to try that in the spring. But its crazy to think that a $13k machine and I was making marks all over the place. I might sell and go to a walk behind but that will really slow me down.

Thoughts???

kawasaki guy
01-07-2013, 07:32 PM
No I dont specifically have any of the ruts and the machine is put away in my trailer for the season. But they look just like a walker if your not familiar.

I was told to try putting more air pressure in the tires from my exmark dealer. So I was going to try that in the spring. But its crazy to think that a $13k machine and I was making marks all over the place. I might sell and go to a walk behind but that will really slow me down.

Thoughts???

Which tire is making the ruts?

fess
01-07-2013, 07:41 PM
Which tire is making the ruts?i believe it would be the tire to my left when im om the machine
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kawasaki guy
01-07-2013, 07:47 PM
i believe it would be the tire to my left when im om the machine
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give it some air. that is all I can think of.

fess
01-07-2013, 07:51 PM
yea thats all the exmark rep could think of too. he said to run them with a little extra air. i hope it works. thanks for ur help!!
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kawasaki guy
01-07-2013, 08:02 PM
Also, try wider tires if you have the $

fess
01-07-2013, 08:04 PM
ok thanks. ill look into that.
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kawasaki guy
01-07-2013, 08:07 PM
ok thanks. ill look into that.
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No problem.

kawasaki guy
01-07-2013, 08:09 PM
oh, and with air pressure, check BOTH tires.

fess
01-07-2013, 08:10 PM
thanks!!
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Exmark PR
01-08-2013, 09:17 AM
We are sorry to hear you are having challenges with your Exmark Navigator. Aside from putting more air in the tires, you can also try not filling the collection tub as full. Our Navigators will pack a lot of grass in the hopper putting additional weight on the tires. If you continue to leave marks once you start mowing again in the spring, please send us your contact information to exmarkpr@exmark.com and we will have one of our engineers contact you to work through some possible solutions.

fess
01-08-2013, 09:23 AM
thank you very much for your concern and reply. one question: what are your feelings of putting wider tires on?
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Exmark PR
01-08-2013, 10:33 AM
Using wider tires will definitely reduce the surface contact pressure and reduce the effects of wheel scuffing. It’s hard to predict how much benefit that will be as it will vary widely depending on turf and moisture conditions, etc.
Additionally, watch how you control your turns. Wheel scuffs are often made by allowing one wheel to remain stationary during the turn. When turning, use a combination of forward or rearward movement to always keep both tires turning. It takes a little practice, but if done properly can virtually eliminate any scuff marks. Beyond that, soft and wet conditions, such as those in spring when roots will easily pull out, will certainly add to the issue.

fess
01-08-2013, 01:27 PM
thank you for the info. i will update you in the spring...
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kawasaki guy
01-08-2013, 03:59 PM
Exmark, what do you think of my solution?

also, fess keep us posted please.

fess
01-08-2013, 04:05 PM
So I talked to my exmark dealer and they stated the widest tire I can put in is an 11", which would only gain me a half inch. Can you confirm this for me that the widest tire I can put on is an 11"? he stated I would hit the frame with anything wider. Thanks.

exmarkking
01-08-2013, 05:43 PM
Operator error! Lol it just takes a little time to get use to them. So many variables from wet grass, slopes, ground speed ect. The more you use the machine to better you'll get at controlling it. Maybe they will come out with traction control for mowers like cars have.
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fess
01-08-2013, 05:51 PM
Thanks exmarkking!! lol. i used the machine for a whole year and still made alot of marks. but yes i agree there is definitely operator error involved to a point. they are tricky to get down and i am going to work on that this spring. thanks for ur input. i appreciate everyones contributions.
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kawasaki guy
01-08-2013, 05:56 PM
So I talked to my exmark dealer and they stated the widest tire I can put in is an 11", which would only gain me a half inch. Can you confirm this for me that the widest tire I can put on is an 11"? he stated I would hit the frame with anything wider. Thanks.

My dad got bigger tires for his jeep, and just bought spacers so the tires would not rub. do this with the mower lol

fess
01-08-2013, 05:58 PM
yea i had a jeep with 33 x 12.5's with a spacer. maybe ill tKe my navigator to west coast customs...lol.
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exmarkking
01-08-2013, 06:59 PM
haha, And i did said that nicely, no harm intended. But honestly, navigator controls and Ztr controls are completely different machines. I may be crazy but I think you guys have the air pressure in the tires backwards. Less pressure will create more traction than high pressure. People who rock crawl or mud their vehicles always air down the tires when they get on the trail for better traction. It makes sense from a Physics stand point, so try the opposite.
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Exmark PR
01-09-2013, 09:14 AM
Fess,
The widest tire available for the Navigator is 10.5”. If you happen to have the optional 18X8.5-10 Tires installed, you will get a 2” gain in footprint width by going back to the 10.5” tires.

fess
01-09-2013, 10:17 AM
hi exmark rep, i have the 10.5 in tires on now
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Exmark PR
01-09-2013, 04:48 PM
Another thing to consider is changing your mowing patterns each time. When you begin mowing, please consider everything that has been suggested previously. If you are still having issues, please send your contact information to exmarkpr@exmark.com and we will have an engineer get in contact with you.