Dolmar 64xx/73xx/79xx series, smurfs and solo 665/675/681 thread

[Backtroller]

The underside is all filter

 

[RI Chevy]

Still looks like a choke point to me. But the saws run strong so......
Carry on.

 

[Wilhelm]

Whats all this 7900p45 business? I thought the 7900 was the old model and the 7910 was the new one? Also that filter is tiny unless the whole underside is all filter area? Whats the deal with the whole saw tell me more please.

Dolmar renamed the saws from PS-7900 to PS-7910, Makita renamed them from DCS7900 to EA7900!
The PS-7910 and EA7900 are the current versions featuring a SLR muffler and a coil limited to 12.8k rpm WOT no load.
The SLR muffler is easily fixed and the coil doesn't truly impact performance.

The AF cartridge is filter surface all around and works surprisingly well.

 

[mettee]

New 20" bar, I dig the quality of this bar seriously nice. Courtesy of @usmcbuckwild

And a trip to the vet, this time I came back armed with a stapler courtesy of Doc Wayne. Now I can staple them back together myself

 

[RI Chevy]

Nice looking saw.
Poor dog. What happened?

 

[mdavlee]

Still looks like a choke point to me. But the saws run strong so......
Carry on.

Filter doesn’t clog up near as fast as a Stihl so area isn’t as important. It can only swallow what flows through the carb at one time. Same size Venturi as the Zama on a 044.

 

[RI Chevy]

7900 is much bigger than 044. Anyone tried bigger carbs?
I would still think a bigger air filter would be better for a saw that size.

 

[mettee]

Nice looking saw.
Poor dog. What happened?

His little brother is an a hole. Jax is the boss and even when zeke does this to him he doesn't back down and he doesn't try and hurt him back. It's the craziest thing how smart he is. He is a gentleman for sure.

Usually they get along, zeke is trying to be the boss but he won't ever be.

 

[mettee]

7900 is much bigger than 044. Anyone tried bigger carbs?
I would still think a bigger air filter would be better for a saw that size.

I agree, a bigger filter is gonna help. Hoping to get some K&n run time this weekend. I dont have anything to cut at my house, but I'm sure my neighbors would love it if I did.

I'm curious what roll tighter tater is gonna do

 

[huskyboy]

I agree, a bigger filter is gonna help. Hoping to get some K&n run time this weekend. I dont have anything to cut at my house, but I'm sure my neighbors would love it if I did.

I'm curious what roll tighter tater is gonna do

Make sure the arm is straight and the blade sharp. And run at least a 3 foot blade. I bet it still won’t outcut my farm BOSS. Might want to invest in a big MAGNUM sticker too... bigger is better. Even the bishes agree...

 

[mettee]

Make sure the arm is straight and the blade sharp. And run at least a 3 foot blade. I bet it still won’t outcut my farm BOSS. Might want to invest in a big MAGNUM sticker too... bigger is better. Even the bishes agree...

Can I borrow a magnum sticker?

 

[mettee]

On a side note, I looked for a double end milling bar. They are $500 buck. Holy cow

 

[Deets066]

New 20" bar, I dig the quality of this bar seriously nice. Courtesy of @usmcbuckwild

Reminds me of that movie the cone heads

 

[mdavlee]

7900 is much bigger than 044. Anyone tried bigger carbs?
I would still think a bigger air filter would be better for a saw that size.

10%. I’ve run Zama in 046s and they run fine after Poleman modded them. 7900 with the HD filter can choke them down to the tune of 10% slower cut times on a few I did. I used a green weenie on one just pushing it over the filter neck and messy I g the cover down since the stock didn’t fit with the carb I used. It worked but wasn’t ideal.

 

[Deets066]

10%. I’ve run Zama in 046s and they run fine after Poleman modded them. 7900 with the HD filter can choke them down to the tune of 10% slower cut times on a few I did. I used a green weenie on one just pushing it over the filter neck and messy I g the cover down since the stock didn’t fit with the carb I used. It worked but wasn’t ideal.

That solo hybrid you did wouldn’t run for chit with the filter on.

 

[mdavlee]

That solo hybrid you did wouldn’t run for chit with the filter on.

That’s for sure. It was always borderline too lean with the carb on it. With a filter it was choked down enough

 

[Deets066]

That’s for sure. It was always borderline too lean with the carb on it. With a filter it was choked down enough

Found with those carbs to just keep turning em out. Some tune at 4 - 5 turns out

 

[RI Chevy]

Interesting Mike and Keith. Thanks for sharing the info.

 

[Backtroller]

Mine was one of the ones that Mike built that was much slower with the HD kit on. I use to have his videos but can’t find them.

That’s why I’m running the mesh filter now. It’s picked up since switching from the flocked one.

 

[RI Chevy]

They on YouTube channel?