DOLMAR/MAKITA Newer PS-7910 Needs Some Help

[PrairieMan]

I acquired a new carryover 2012 Dolmar PS-7910 in 2018. I’ve put about 10 tanks of premium fuel through it, enjoyed every minute of its smooth operation cutting a lot of birch trees (hot knife through butter), then it sat in the shop for about 8-9 months. I had Seafoam in the gas, but didn’t start it up and run it for the past 6 months. It’s now hard to start, runs like crud, eventually runs out of fuel, dies, and produces a white tipped spark plug. I had a local shop clean the carb, but that did not help. I’d appreciate any advice you may have.

 

[Dub11]

Welcome!

Sounds like its running lean. Did the filter get changed?

Was the Carb tuned in the wood?

 

[PrairieMan]

Welcome!

Sounds like its running lean. Did the filter get changed?

Was the Carb tuned in the wood?

I’ll ask if the filter was changed. Definitely not tuned in wood. Is there a “how to” on tuning so I can do it? It’s a Stihl dealer who’s giving it TLC. This may be the first Dolmar he’s ever seen. Thanks for your help/advice.

 

[huskihl]

Check that the impulse line from the top of the carb to the bottom right if the cylinder hasn't come off.

And pull the limiters off the carb screws, remove the stops, and reinsert them

 

[PrairieMan]

Check that the impulse line from the top of the carb to the bottom right if the cylinder hasn't come off.

And pull the limiters off the carb screws, remove the stops, and reinsert them

Will do. Thanks. Any hidden Dolmar shops in Minnesota, Wisconsin or South Dakota?

 

[huskihl]

Will do. Thanks. Any hidden Dolmar shops in Minnesota, Wisconsin or South Dakota?

Probably a couple. Try Google. Might be a member close to you that can fix you up also

 

[Dub11]

@Philbert is in SD IIRC

 

[PrairieMan]

Thank you.

 

[stihl livin]

There is a Dolmar shop in dresser Wisconsin. Send a message to @WetGunPowder as he will help you out.

 

[stihl livin]

@Philbert is in SD IIRC

Philbert is in East Dakota so I’ll let you figure out where that is

 

[Dub11]

Philbert is in East Dakota so I’ll let you figure out where that is

You telling me there's a 3rd Dakota?

 

[PrairieMan]

You telling me there's a 3rd Dakota?

I guess there is a third Dakota, formerly known as Wisconsin. Thanks for the help.

 

[stihl livin]

You telling me there's a 3rd Dakota?

What is east of both north and South Dakota

 

[PrairieMan]

What is east of both north and South Dakota

Skipped right over MN to an experienced dealer in Dresser, WI: Boyd’s Outdoor Power
Thanks fellas for the advice and a shop who’s very familiar with this fine machine. Over and out.

 

[Simondo]

Skipped right over MN to an experienced dealer in Dresser, WI: Boyd’s Outdoor Power
Thanks fellas for the advice and a shop who’s very familiar with this fine machine. Over and out.

Some feed back about the outcome is always a good thing

 

[Dub11]

Skipped right over MN to an experienced dealer in Dresser, WI: Boyd’s Outdoor Power
Thanks fellas for the advice and a shop who’s very familiar with this fine machine. Over and out.

Just a thought, are you going to ship it to Wisconsin or drive it there?
The reason I ask is @Stump Shot lives in northern Wisconsin. He also ports saws too. Maybe contact him.

 

[PrairieMan]

The logistics are a little complicated because the saw hangs out a cabin 300 miles from me. I’ll puck it up today from a local Stihl shop in northern MN. They did some tinkering on it this week. I’ll provide an update this evening.

 

[PrairieMan]

Good news. The local Stihl shop got the Dolmar running like a top. I asked the guy to spend more time with it and he did. The cold start was good. Sailed through dozens of cuts on a fallen pine tree this afternoon. Wide open in wood is very good. It’s back (and so is building forearm muscle)! Warm start is pretty good. I’ll give it a better workout tomorrow.