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 03-04-2012, 21:20 Post: 182638
scrapman



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 loss of power

just bought ym1500 zen-noh 2tr15-21-818 i think starter is bad so i pull start and it crank up.give throttle speed up black smoke put under load lose power fast black smoke. had a catalytic converter as a muffler so i cut it off. what should i look for "loss of power"






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 03-04-2012, 23:28 Post: 182640
auerbach



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Before blaming the starter check the battery, cables, and your use of the decompression control.

A little black smoke at startup could be normal, indicating unburned fuel. Or blowby, maladjusted valves, or other things. I'd check the fuel and throttle systems first.

(It's a "YM1500." Zen-Noh is just the original owner, and all 1500s have the same 2-cyl engine.)






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 03-05-2012, 06:47 Post: 182642
greg_g



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Before you get into anything too complicated, remove the air filter. Start and run the tractor without the air filter temporarily. If the black smoke problem goes away, simply install a new/clean air filter.

//greg//






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 03-05-2012, 07:07 Post: 182643
scrapman



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when i bought the tractor it did not have a air filter on it.






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 03-05-2012, 07:14 Post: 182644
scrapman



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i did notice ground cable loose will tighen starter will only turn over if decompression control is used will check the fuel filter. thanks for all info. all info is welcome






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 03-05-2012, 07:31 Post: 182645
winston1



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 loss of power

My 2002 has a kill cable. One time I left it partially pulled. The tractor cranked with black smoke and had no power. Yours may not have a kill cable. I wonder how long the tractor ran with a catalytic converter as a muffler. Was the converter seemingly stopped up? Any difference after removing it?






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 03-05-2012, 20:14 Post: 182649
scrapman



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after the catalytic converter was cut off there was no difference. but i did check the fuel bow and found water in bottom so i will get new filter thanks all and will let u all no the out come






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 03-05-2012, 23:33 Post: 182651
auerbach



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A little water in the bowl won't hurt -- that's what it's for -- but sounds like this machine was pretty beat up. So once the engine is running I'd change fluids, lube, and check all around.






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 03-06-2012, 06:58 Post: 182652
greg_g



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Quote:
Originally Posted by scrapman | view 182649
a i did check the fuel bow and found water in bottom

New filter won't hurt, but water may be a red herring. Don't know about your engine, the "bowl" on mine had a drain at the bottom. If/when I saw water, I'd just open the drain until only diesel fuel came out.

//greg//






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 03-09-2012, 08:05 Post: 182691
kthompson



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 loss of power

Also look for such as mice nest in the air system.






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Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Thread 182638 Filter by Poster:
auerbach 2 | greg_g 2 | kthompson 1 | scrapman 4 | winston1 1 |




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