oliver 77 gas rc

jim_uny · Jul 27, 2015

have oliver 77 gas that ran perfect last year when parked. it has pertronic electronic ignition. gas had a lot of rust crud.
drained out. changed gas filter. it runs with power ok but has hi rpm surging and some sputtering. carb was recently rebuilt by
me. am goin to take apart and clean. marvel s tsx 363. crud in atomizer ? what causes surging and sputtering but ok power ?
txs

old · Jul 27, 2015

Filter as in in line filter?? If yes good chance that is your problem. If it has the correct sediment bowl and screen that is all the filter you need.
Surging can be caused by gov to carb linkage binding some place or bad or weak spring or a carb that is running a bit lean

greg oliver · Jul 27, 2015

I had to pull my carb at least a half dozen times and a few weeks ago put a in line filter on and runs fine so far. I kept the correct fuel line and just picked up some fuel line ,fittings and in line filter at Napa. Fuel tank is most likely my problem but fuel looks clean when it came out. I just got the original carb back from repair shop so may put that back on.

old · Jul 27, 2015

In all the years I have messed with tractors I have thrown probably a good 30 in line filters away because they where the problem. A good sediment bowl and screen will do as good a job and work 100% better if you dump the bowl when you should. My D-17 has a very bad tank and I dump the bowl every time I use it and it has bee running just fine for 7 plus years that way

oliver90owner · Jul 28, 2015

Old is right, generally, re in line filters (are fuel filters anything but in-line or in-tank?). However, while the original filter/sediment bowl was perfectly adequate, replacing it with an appropriate alternative can work.

Think here that the glass sediment bowl is a visual check for both solids and water; the in-linefilters fitted by many will be rendered impotent if soaked with water. There are also two types of filter element type - pumped and gravity feed. Many fit pumped filters where a gravity filter is required and then wonder why they do not work!

The usual advice used to be to keep the tank full of fuel, to avoid moisture condensation problems. That is not so applicable with the modern gasoline fuels - too much very volatile hydrocarbons and ethanol to allow longer term in-tank storage. Stale fuel is far more of a problem these days and corrosion is enhanced.

We always drained the carbs on our tractors - just to get rid of any TVO present, so less problems with starting the next day.

Goldsburg · Jul 28, 2015

I will add that if you do put on an in-line filter that it needs to be installed correctly. The outlet MUST be lower than the inlet if you are gravity feeding the carb. I saw this very problem on a customer's tractor a few weeks ago...

Regards,

Goldsburg

oliver 77 gas rc

jim_uny

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old

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greg oliver

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old

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oliver90owner

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Goldsburg

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