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Old 05-09-2013, 07:57 PM
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duelling carl duelling carl is offline
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Metro not running at peak

I have noticed that my Metro is showing significant slowdown in RPM. It normally ran at 3540 idle and 3480 with blades engaged. First, is that normal? Now today I have noticed that it only peaked at 3480 and when I was mowing it only reached 3420 and sometimes fell to 3360. Sometimes when I put it down to idle it acts like the choke is on and drops to 1380 instead of running at a clean crisp 2100 like normal (when fully warmed up). I did notice a 60 rpm drop off when I put it in gear. At first I thought it was the carb until I saw the slowdown when put in gear. The transmission belt is not overly tight. Any help here would be appreciated.
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Old 05-09-2013, 08:05 PM
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Restrorob Restrorob is offline
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You can run up to 3700 easily with blades off, Sounds like it's been run'n under from the get-go. Clean up all the throttle linkage and spray lube them along with the throttle cable, See how that goes.

Can't tell how to raise the rpms without a engine model and spec number......
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Old 05-09-2013, 08:28 PM
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duelling carl duelling carl is offline
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its a kawi FS481V 16 hp. It only has 111.8 hours on it and all maintenance is performed at half the intervals the book says. I ran it all last year with no issues but over winter I noticed a little drop in RPM but I use stabilizer so I knew my fuel wasn't bad. The unit is so clean it could be put on the showroom floor with a little touch up paint and sold for new.
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36" Exmark Metro with ECS
Echo SRM 225, 280T
Echo PE 225, 280
Echo PB 500T
Echo PB 770T
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Old 05-09-2013, 09:56 PM
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Quote:
Originally Posted by duelling carl View Post
I use stabilizer so I knew my fuel wasn't bad..

You shouldn't rely on magic potions like that...... Put some fresh fuel in it.

If it's showroom clean lube the linkage and throttle shaft anyway, Throttle shafts can gum up from sitting and cause rpm changes......
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Old 05-10-2013, 07:56 PM
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duelling carl duelling carl is offline
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did that today and no change. I think the throttle cable might need to be tightened. Engine sounds strong!
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36" Exmark Metro with ECS
Echo SRM 225, 280T
Echo PE 225, 280
Echo PB 500T
Echo PB 770T
Reply With Quote
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