Author Topic: Dolmar 500V 4 stroke  (Read 5961 times)

0 Members and 76 Guests are viewing this topic.

Offline brettl

  • 6 cube
  • ****
  • Posts: 179
  • Karma: 7

  • Total Badges: 18
    Badges: (View All)
    Third year Anniversary Second year Anniversary Level 4 One year Anniversary Linux User Mobile User
Re: Dolmar 500V 4 stroke
« Reply #20 on: April 30, 2014, 08:11:40 pm »
Is 4-mix type what you're referring to as splash lubrication?

And this new trimmer that operates at any angle is splash or true 4-stroke?
Sthil Man. 011AV, 015, 020, 020, 024, 025, 026, 028 WB(2), 028AV, 028 Super, 029 Super(2), 039, 041, 192TC, 200T, 250, 260, 390, 440, 441

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO

  • Total Badges: 39
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 5000 Posts Third year Anniversary
Re: Dolmar 500V 4 stroke
« Reply #21 on: April 30, 2014, 09:20:57 pm »
The Stihl 4mix are definitely true four stroke with a intake and exhaust valve as far as the combustion cycle is concerned.

The oil in the fuel is the source of lubrication.

http://www.stihl.com/4-mix-engine-lightweight-and-with-good-lugging-power.aspx
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172

  • Total Badges: 25
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary 1000 Posts Second year Anniversary Level 5 500 Posts
Re: Dolmar 500V 4 stroke
« Reply #22 on: April 30, 2014, 11:05:26 pm »
What kind if oiling system?

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO

  • Total Badges: 39
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 5000 Posts Third year Anniversary
Re: Dolmar 500V 4 stroke
« Reply #23 on: April 30, 2014, 11:39:06 pm »
I have several 4 stroke model airplane engines that use the regular two stroke fuel.

They use blow-by past the rings to lubricate the bottom end. They last as long as the two strokes.

The small Honda four stroke has a impeller in the crankcase that whips the oil all around. You have to have it in a certain position to check the oil.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172

  • Total Badges: 25
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary 1000 Posts Second year Anniversary Level 5 500 Posts
Re: Dolmar 500V 4 stroke
« Reply #24 on: May 01, 2014, 12:36:14 am »
Ok thk. Is the Dolmar a regular wet sump or something  different? Ie. Dry sump

Offline Nathaniel Vansickle

  • Piped Saw
  • *****
  • Posts: 468
  • Karma: 92
  • Location: Newcomerstown ,Ohio

  • Total Badges: 24
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary Poll Voter Level 5 Second year Anniversary Signature
Re: Dolmar 500V 4 stroke
« Reply #25 on: May 01, 2014, 10:14:55 am »
The 246.4 and the attachment series  Dolmar  trimmers are a true 4 stroke with oil in crankcase and straight gas in the tank. they pump oil by crankcase pressure forcing oil through passages that have check valves for one way oil flow.
the 245.4 and 335.4 trimmers and the blowers don't have the check valve system...Honda system sounds similar to what these do.

the mtd, troybilt, Ryobi 4 stroke trimmers use a dipper system to just throw the oil around.

shindaiwa and stihl have 4-mix system which has no crankcase oil and instead uses mix gas to lube everything. I think they both had some problems in the beginning.
 We have a 4 mix stihl on the farm that is 8 years old or so and other than replacing the carb a couple times it has been great. Since the dolmar showed up it doesn't get used anymore though.


5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172

  • Total Badges: 25
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary 1000 Posts Second year Anniversary Level 5 500 Posts
Re: Dolmar 500V 4 stroke
« Reply #26 on: May 01, 2014, 01:38:24 pm »
Thanks Nate!

Offline SawTroll

  • Nitro Hotsaw
  • *******
  • Posts: 1196
  • Karma: 71
  • Information collector
  • Location: Troms, North Norway

  • Total Badges: 28
    Badges: (View All)
    Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 1000 Posts Third year Anniversary Spammer 25 Posts in one day
Re: Dolmar 500V 4 stroke
« Reply #27 on: May 02, 2014, 10:13:24 pm »
A weak 50cc saw weighting like a 70cc saw, no thanks!  ::)

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 23708
  • Karma: 664
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair

  • Total Badges: 53
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 8 Apple User Eighth year Anniversary 20000 Posts
Re: Dolmar 500V 4 stroke
« Reply #28 on: May 02, 2014, 11:13:29 pm »
A weak 50cc saw weighting like a 70cc saw, no thanks!  ::)

Where did it say it was 14lbs or heavier PHO?  I've been looking for specs but nothing in stone.

Offline Nathaniel Vansickle

  • Piped Saw
  • *****
  • Posts: 468
  • Karma: 92
  • Location: Newcomerstown ,Ohio

  • Total Badges: 24
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary Poll Voter Level 5 Second year Anniversary Signature
Re: Dolmar 500V 4 stroke
« Reply #29 on: May 03, 2014, 08:24:16 pm »
ok I may have spoken too soon. the 335.4 according to the sales flyer is the 360 degree engine and the product book doesn't list it as the 360 engine so idk for sure which it is. ???
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


 

Related Topics

  Subject / Started by Replies Last post
4 Replies
965 Views
Last post October 09, 2011, 08:23:12 pm
by Old Iron Logging
4 Replies
1054 Views
Last post February 13, 2012, 07:26:47 pm
by man of stihl
3 Replies
648 Views
Last post May 22, 2012, 01:50:26 pm
by Cut4fun .
9 Replies
1848 Views
Last post August 22, 2012, 10:37:55 am
by Vance in AK
14 Replies
1692 Views
Last post November 03, 2022, 04:00:11 pm
by Cut4fun .
7 Replies
1228 Views
Last post March 10, 2016, 06:30:18 pm
by Philbert
13 Replies
1419 Views
Last post June 06, 2016, 12:44:20 am
by 3000 FPS
32 Replies
1675 Views
Last post January 04, 2017, 08:23:30 am
by Chris-PA
18 Replies
3069 Views
Last post March 07, 2017, 08:35:33 pm
by Nathaniel Vansickle
3 Replies
531 Views
Last post June 01, 2018, 02:18:54 pm
by Cut4fun .