Author Topic: PM 605 hard starter?  (Read 804 times)

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Offline Al Smith

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Re: PM 605 hard starter?
« Reply #10 on: September 15, 2015, 05:22:30 am »
You need about one more wrap on the drum passed fully retracting the cord.If you get the tension too tight it will bind the drum .

Offline Rich73Kelly

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Re: PM 605 hard starter?
« Reply #11 on: September 15, 2015, 10:02:42 am »
I think that is where I set it this last time ... now, can you answer me this? What should be the "standard" length of the rope? I seem to bottom out the length of the rope while pulling, thinking it's not long enough ... it already seems to fill the drum while wrapped.
If we can't fix it, IT ain't broke!

Offline Eccentric

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Re: PM 605 hard starter?
« Reply #12 on: September 15, 2015, 03:24:32 pm »
All the saws in that series have both manual and automatic oilers.  The diaphragm pump is at the top of the powerhead.  In front of the Carb box, and visible when the AF cover is removed.  The saw could still be flooded an/or fouled by old/contaminated gas.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Rich73Kelly

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Re: PM 605 hard starter?
« Reply #13 on: September 22, 2015, 04:10:58 pm »
Alright, guys, ... I opened up the PM605 today. Yes, it does have the auto oiler. Never realized this ... and yes, it has the Walbro HDB carb witt a 6B under the HDB.

If we can't fix it, IT ain't broke!

Offline Eccentric

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Re: PM 605 hard starter?
« Reply #14 on: September 22, 2015, 06:23:13 pm »
It's almost like we know what we're talking about.... 8)
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Rich73Kelly

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Re: PM 605 hard starter?
« Reply #15 on: September 25, 2015, 08:47:16 am »
Alright, I found a gasket kit and am going to go get it today. Any issues or quirks I should know about before opening it  up? How tight should the different bolts/screws be? Just snug or, be sure they're tight? I am not going to tamper with the hi and lo screws if I don't have to. The saw ran fine when it would start.
If we can't fix it, IT ain't broke!

Offline Al Smith

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Re: PM 605 hard starter?
« Reply #16 on: September 25, 2015, 03:41:29 pm »
Never fear the carb .Just screw the things  tight and count the turns ,remove ,blow out the carb,put it back together .Do the same ,tight then back them so many turns .Nothing should change very much if any .You're not going to learn any younger .

Offline Rich73Kelly

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Re: PM 605 hard starter?
« Reply #17 on: September 25, 2015, 05:10:26 pm »
Al, young is but a state of mind at my age! Lol ... over 60 already! I have rebuilt several automotive carbs through the years but, none were aluminum, which I am assuming this one is. I figured tight enough to seat the gaskets but, at the same time I don't want to strip anything either.
If we can't fix it, IT ain't broke!

Offline mikehonda

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Re: PM 605 hard starter?
« Reply #18 on: January 27, 2016, 09:55:04 pm »
The 600 series all tend to start like that, you lock the throttle until initial pop, then off with the choke, and pull until it starts with a few throttle blips there running, however i have noticed that keeping the on off switch good and clean keeps the spark strong which helps with the starting. Last but not least these saws are usually pretty high compression setups and they really like the high octane fuel, mid to high 90s, or even flat out race gas, these saws also when tuned properly actually produce very good cutting power regardless of what the nay sayers wine about.

Offline mikehonda

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Re: PM 605 hard starter?
« Reply #19 on: January 27, 2016, 10:05:53 pm »
No i fix these saws alot in the shop and many of the 610 or timber bears i see do indeed have the walbro carb, i see a few now and again with the zama and tillotson carbs. My experience has been that the tillotson carbs always seem to be the better of the bunch. I ofter switch these to a tillotson as well as any other saws that i can, the tillotson carbs seem to be the best for starting, rebuilding and tuning. I often wish i had tillotson carbs for all chainsaw applications.

 

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