Author Topic: 7300 oiler  (Read 757 times)

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Offline Ducksnuff870

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7300 oiler
« on: March 02, 2014, 08:31:58 am »
I generally run a 24" bar on my 7300. I'm only using a half of a tank of bar oil to a tank of gas. As far as I know we have the oiler turned up all the way. I'm not burning the bar and chain up but it seems like a lil more bar oil wouldn't hurt. How much bar oil are the rest of the dolmars out there using? My 036 uses almost a full tank of bar oil to a tank of fuel.

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Offline 660magnum

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Re: 7300 oiler
« Reply #1 on: March 02, 2014, 09:42:32 am »
It is likely time to rebuild your pump? The adjuster part of your pump is made of nylon. The end of the adjusting screw wears off with use and your oil pump volume diminishes.

When you get the O-rings and the adjuster, there is a black adjuster (5200/5105/520) and a white one (6400/7300/7900) .  I replace the rubber hoses or tubes too while I'm in there. If you do not have a green suction hose, it is time to change out the hoses.

Something else I've noticed about older saws of this series is that someone has stripped the adjust where it will turn around and around. The adjustment range is less than one quarter turn.

http://chainsawrepair.createaforum.com/dolmar/7300-oiler/

Oiler hole in bar?

http://chainsawrepair.createaforum.com/dolmar/modding-an-oiler/
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Offline aclarke

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Re: 7300 oiler
« Reply #2 on: March 02, 2014, 12:10:22 pm »
check the oil tank vent too...

Offline 660magnum

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Re: 7300 oiler
« Reply #3 on: March 02, 2014, 12:16:33 pm »
One thing about this series of saws (6400, 7300, & 7900) is that they are not known to be prolific oilers.

Some rules of thumb are to not use greater than a 28" bar because of the oiler if you are cutting blow downs and dry wood off the ground....

If clean green standing wood, you can sometimes get by with a 32" bar.

A 7900 has good enough power for a 32" bar but the oiler is the limiter.

With the 7300/7900, most I've seen had a 24" bar.
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Offline 7sleeper

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Re: 7300 oiler
« Reply #4 on: March 02, 2014, 04:45:05 pm »
Are you sure it is turned up all the way? Sounds a little like turned down to minimum.

7

Offline 660magnum

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Re: 7300 oiler
« Reply #5 on: March 02, 2014, 04:51:36 pm »
To adjust the oiler . . .

Right for reduced oil supply
Left for more oil supply

There's only 70 degrees of travel between low and high!
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Offline 660magnum

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Re: 7300 oiler
« Reply #6 on: March 02, 2014, 04:56:02 pm »
Something not mentioned in this thread is that the newer Oregon EPA bars have a tiny angled oil hole in each side of the bar that is only like 1/16" diameter.

I drill these out to 5/32".

Make sure the grooves and oil holes are free of wood chips
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Offline Ducksnuff870

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Re: 7300 oiler
« Reply #7 on: March 02, 2014, 05:00:15 pm »
I'll double check the setting. I have a new stihl sprocket nose 25" bar mounted on it. I've never given any thought to the oil holes. would smaller holes keep the saw from putting out as much oil?

Offline 660magnum

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Re: 7300 oiler
« Reply #8 on: March 02, 2014, 05:02:19 pm »
Yes, but I don't remember Sthl ES branded bars having small oiler holes? Maybe mine are not new enough?
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Offline aclarke

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Re: 7300 oiler
« Reply #9 on: March 02, 2014, 09:00:27 pm »
Large mount stihl bar with adapter?

 

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