Author Topic: CS 600P - Should I get a HDA 268 or HDA 203 carb?  (Read 164 times)

0 Members and 0 Guests are viewing this topic.

Offline cbell11

  • pruner
  • *
  • Posts: 2
  • Karma: 1
CS 600P - Should I get a HDA 268 or HDA 203 carb?
« on: November 04, 2016, 10:10:16 pm »
I picked up a used 600P that doesn't run, just sputters every once in awhile but never sounds like it is going to start.  Previous owner attempted to "fix" it and looks like he broke the fuel inlet elbow and attempted to use epoxy to seal it back up.  One of the carb bolts is also stripped. 

While doing some searching I saw the post about using the HDA 203 carb, at that time it looks like the 203 was cheaper in price.  Is the 203 a better choice over the 268 if the price is pretty much the same?

I did order the Nuts and Bolts for the 8000 to fix the stripped carb mount situation.  I'm not totally convinced the carb is the reason it won't fire.  Although it is rigged up and that one side isn't air tight, it doesn't hardly sputter and it is getting fuel.  The meter lever was also set level.  The spark even with a new plug isn't a nice bright white spark it has more of a purple tint so not too sure the ignition coil is putting out a hot spark.  The air Gaps look good and I unhooked the Kill switch wire.  I went ahead and ordered a new Ignition coil, found one for 49 online but will go ahead and get a carb also so just wasn't sure which one I should go with. 

Social Buttons


Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 17941
  • Karma: 338
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: CS 600P - Should I get a HDA 268 or HDA 203 carb?
« Reply #1 on: November 05, 2016, 09:09:39 am »
I'm no help on this one.  So I'll see if I can drum them up for ya.

@mbrogz3000  @sharkey

Thread OP was reading I bet. http://chainsawrepair.createaforum.com/echo/cs-600p-w-hda-203-and-cs-8000-carb-bolts-(pics-inside)/
REDNECK Saw Repair Getter Done

Offline sharkey

  • Piped Saw
  • *****
  • Posts: 364
  • Karma: 36
Re: CS 600P - Should I get a HDA 268 or HDA 203 carb?
« Reply #2 on: November 05, 2016, 08:53:27 pm »
Ill try to help.

The HDA-203 carb off the cs-670 was substituted for the HDA-268 because the 268 carb was bad.  The 268 carb is made with a semi fixed jet nozzle system in the high circuit, and the check valve in this system was leaking air.  The cs-670 carb uses a screen style high side sealant system which is not susceptible to the air leaks. 

Chainsaw carbs are measured by. 
i. Choke Bore.
ii. Venturi
iii. Throttle Bore. 
HDA-268;  Choke Bore is not listed.  Venturi; 15.08mm  Throttle Bore 19.03mm
HDA-203; Choke Bore is not listed.  Venturi, 15.08mm  Throttle Bore 19.03mm
The carbs are basically the same (minus the semi fixed jet system of the 268).  I did have to monkey with the choke linkage to get the kick down off high idle working the way I wanted it to.   

If you chose to make the swap, the only thing that you need to be mindful of, is that the 600p engine is receiving enough fuel at cutting speed.  The 600p has an rpm limited ignition coil which begins to drop spark at 13;500rpm.  The sound of this dropped spark mimics two stroke engine 4 stroking which has been used for carb tuning over the last 40 years.  Just make sure the engine is receiving enough fuel and all is well.           
   


   
Informative Informative x 1 View List

Offline sharkey

  • Piped Saw
  • *****
  • Posts: 364
  • Karma: 36
Re: CS 600P - Should I get a HDA 268 or HDA 203 carb?
« Reply #3 on: November 05, 2016, 09:23:07 pm »
Couple of other thoughts.

On your spark issue, replace whatever plug that is in there now with a standard Champion CJ6Y.  It could be that the plug that you have now is a resistor plug for a different engine.  The resistors have nothing to do with radio interference, today they are about air pollution.  At slow pull start cranking speeds the ignition may be having trouble overcoming the resistor.  Listed spark plug for the 600p is CJ6Y or NGK BPM8Y.  No R in the coding means no resistor.       

Minimum compression psi of 135 is needed to run.  Spray some Windex or soapy water around the compression release while pulling the engine over and look for bubbles/leaks.  Does the button pop up quickly between pulls?  Is the piston scored with vertical gouges from the prior owner?         

Check the screen at the muffler outlet for blockage.  If fresh fuel and air cannot flow through the cylinder, the engine wont run.  If you live where mud dobbers bees are present, remove the muffler and check for blockage all the way into the exhaust port. 
Like Like x 1 View List

Offline cbell11

  • pruner
  • *
  • Posts: 2
  • Karma: 1
Re: CS 600P - Should I get a HDA 268 or HDA 203 carb?
« Reply #4 on: November 05, 2016, 09:38:07 pm »
Thanks for taking the time to share this info.  I will report back after I test compression and the Compression release.  It did pop back out each time it would attempt to fire.  The Piston wall looks clean of scratches just from what I can see from the back. I will pull the Muffler off also to check the exhaust port.  We do for sure have mud dobbers here in Missouri. 

I will give a Champion CJ6Y plug a try.   
Like Like x 1 View List

 

Related Topics

  Subject / Started by Replies Last post
11 Replies
541 Views
Last post March 09, 2011, 02:02:13 pm
by Old Iron Logging
5 Replies
754 Views
Last post June 07, 2013, 08:41:51 am
by sharkey
3 Replies
384 Views
Last post September 15, 2013, 10:56:36 pm
by sharkey
9 Replies
358 Views
Last post December 17, 2015, 12:55:23 pm
by Cut4fun .
2 Replies
150 Views
Last post November 08, 2013, 05:50:01 am
by sharkey
2 Replies
223 Views
Last post November 18, 2013, 08:45:26 pm
by rayvil01
35 Replies
478 Views
Last post November 11, 2016, 11:28:35 pm
by pete
3 Replies
194 Views
Last post June 30, 2015, 07:11:44 pm
by Jason K
5 Replies
203 Views
Last post February 21, 2016, 09:42:40 am
by jmester
600p

Started by echo user « 1 2 » Echo

17 Replies
263 Views
Last post May 03, 2017, 03:52:30 pm
by echo user