DIR Return Create A Forum - Home
---------------------------------------------------------
Chainsaw Repair
HTML https://chainsawrepair.createaforum.com
---------------------------------------------------------
*****************************************************
DIR Return to: McCulloch
*****************************************************
#Post#: 61362--------------------------------------------------
PM 605 hard starter?
By: Rich73Kelly Date: September 8, 2015, 2:04 pm
---------------------------------------------------------
As I stated last week, I would start new threads with my saws
disabilities .... so, here, first, the PM605 ... I bought this
saw at a pawn shop last spring for $50.00. It started a little
hard there but started and ran so, I took it home. It is a damn
good running saw once I get it started !!! Is it something
internally with the saw or, am I trying to start it wrong?
First, I am left handed so, I probably DO start the saw
different than most. With the saw sitting on a flat surface, I
choke it and start pulling. I can pull and pull 20, 30 times,
turning the choke off and back on and once in a while it will
fire but, won't stay running. Once it does start and gets warmed
up, it will run all day ... even after running out of gas, I
just pull a time or two and it fires right back up.
Now, this isn't funny ... after taking pictures to post here,
I read the starting instructions below the switch. "3 Activate
throttle latch" ??? Do I need to give it throttle while it is
choked to get gas in the chamber ???Is this all I am doing
wrong?
Can someone give me some input here? Are they stubborn to start
or, is there something I can tweak?
Apparently, the size of my pictures is too big. I will look for
a pinned post on resizing photos but , for now, in case there
isn't one, "total size 2700KB, maximum individual size 337KB"
... my photo edit program resizes in megapixels. How does one
convert 337kb to megapixels? I am using Adobe Photoshop
Elements.
#Post#: 61382--------------------------------------------------
Re: PM 605 hard starter?
By: Al Smith Date: September 8, 2015, 8:21 pm
---------------------------------------------------------
Check valve diaphragm is stiff from old age .Lets the gas
dribble back out of the carb if it sits for a while .Rebuild
it,cheap less than 10 dollars .FWIW I had to rebuild the carb on
one of my PM 610's only lasted 25 years before it went south .
;)
#Post#: 61390--------------------------------------------------
Re: PM 605 hard starter?
By: Rich73Kelly Date: September 9, 2015, 9:50 am
---------------------------------------------------------
Al, are the kits still available? If so, where would I look? How
do I locate the carb #?
#Post#: 61400--------------------------------------------------
Re: PM 605 hard starter?
By: Chainsawrepair Date: September 9, 2015, 2:27 pm
---------------------------------------------------------
[quote author=Rich73Kelly link=topic=5180.msg61362#msg61362
date=1441739052]
Apparently, the size of my pictures is too big. I will look for
a pinned post on resizing photos but , for now, in case there
isn't one, "total size 2700KB, maximum individual size 337KB"
... my photo edit program resizes in megapixels. How does one
convert 337kb to megapixels? I am using Adobe Photoshop
Elements.
[/quote]
IMO just upload pics to a free photobucket account and it
resizes automatically. Then just copy and paste the IMG code
here for pics to show. www.photobucket.com
For embedding I just set my editing software to 72 and make pics
about 8x10 using megpixels too. Thats seems to put them in the
180KB range.
#Post#: 61416--------------------------------------------------
Re: PM 605 hard starter?
By: Rich73Kelly Date: September 10, 2015, 1:42 am
---------------------------------------------------------
Let's see if this works ...
HTML http://i389.photobucket.com/albums/oo333/Rich73Kelly/P9071339.jpg
or ...
[URL=
HTML http://s389.photobucket.com/user/Rich73Kelly/media/P9071339.jpg.html][img<br
/>width=600
height=450]
HTML http://i389.photobucket.com/albums/oo333/Rich73Kelly/P9071339.jpg[/img][/URL]
#Post#: 61418--------------------------------------------------
Re: PM 605 hard starter?
By: Eccentric Date: September 10, 2015, 3:51 am
---------------------------------------------------------
It's probably just your starting technique. The instructions on
that decal are a bit lacking...
Yes you have to set the throttle lock. Squeeze the trigger,
pull the little black nib sticking out of the top/front of the
rear grip rearward, then release the trigger. The throttle
latch should then stay set until you pull the trigger again. Be
aware that when the engine starts with the throttle lock engaged
that the chain will start moving.
Pull the choke and the pull the rope repeatedly until you get
the first 'pop' from the engine. Do NOT pull again after that
'pop' with the choke all the way out or you will flood it.
Push the choke in 1/2 way and then pull the rope repeatedly
until it starts. Ease in the choke the rest of the way, release
the throttle lock with a pull of the trigger, and keep the
engine running with slight 'blips' of the throttle until it
warms up.
Being left handed shouldn't matter. I'm left handed and I'd
start that saw by holding the handlebar down with my left hand
while pulling the rope with my right (with the toe of my right
boot on the 'boot plate' at the bottom rear of the saw.
When the saw is hot. Don't use the choke. It should restart
without the throttle lock......but may require the lock to be
set. The saw is also likely to not be tuned correctly. That'll
make things difficult too....
In warm weather you can often skip the 1/2 choke step during
your initial cold start. Instead, after that first 'pop' at
full choke, push the choke fully forward before pulling the rope
again.
#Post#: 61457--------------------------------------------------
Re: PM 605 hard starter?
By: Al Smith Date: September 12, 2015, 4:12 am
---------------------------------------------------------
[quote author=Rich73Kelly link=topic=5180.msg61390#msg61390
date=1441810227]
Al, are the kits still available? If so, where would I look? How
do I locate the carb #?
[/quote]I think it most likely has a Tillotson model HU if I
recall correctly,yes available.Numbers will be on the side of
the carb,might be hard to see .
#Post#: 61458--------------------------------------------------
Re: PM 605 hard starter?
By: Al Smith Date: September 12, 2015, 4:26 am
---------------------------------------------------------
Having used a model 610 for 8-9 years selling fire wood this is
what I found .You should periodically remove the recoil and
chain guard and blow out the chips that accumulate under the
cylinder .Because it will stop the air flow from the fan and if
ran long and hard on a shutdown the ignition model will fail .
Once it cools down,like 45 minutes it will start but until you
could pull your arm out of the socket and it will never start .
Also because it uses a diaphragm,impulse type of oiler they
eventually could leak which will draw chain oil into the
crankcase .Given enough time this will carbon the screen and
clog the ex port .If it isn't too bad you can still run it but
be on the look out for a new pump which could be from 25 to 45
bucks new .I just pulled the screen .These things often sell so
cheap you can find one for parts for less than the price of the
pump .
#Post#: 61473--------------------------------------------------
Re: PM 605 hard starter?
By: Eccentric Date: September 12, 2015, 2:01 pm
---------------------------------------------------------
Many of these had Walbro HDB carbs. K10-HDB is the kit for
them. Some had Zamas.
#Post#: 61566--------------------------------------------------
Re: PM 605 hard starter?
By: Rich73Kelly Date: September 14, 2015, 3:04 pm
---------------------------------------------------------
Aaron (Eccentric) well, ruled out starting technique .... I set
the choke, set the throttle lock, pulled and pulled ... couldn't
get that first pop ... checked the plug, a bit damp but, not wet
... I am now curious if some moisture might have got in the tank
... it has bee quite humid the past couple of weeks ... maybe I
should even consider getting a NEW plug! Does someone recall
what the recommended plug and gap are ? It has like, a U8JY or
something close to that now ... Is it possible the flywheel or
coil contacts are rusting and weakening the spark ??? I am not
sure if these are similar to a conventional lawn mower engine.
Al, I am still not ruling out carb issues ... Would it be wiser
to replace or, rebuild? Either way, I would need to find the
parts. According to the manual I found online two years ago, the
650 was the only one with a Walbro (HDB-7A) and the rest have a
Zama C-25. I haven't had the saw far enough apart to look so, I
am not sure if this info is correct. I don' know of an impulse
oiler either, as you can see in the photo I posted, the green
push button above the power switch is the oiler.
You also mentioned to pull the recoil and chain guard to blow
things out ... I did this last year ... Speaking of the recoil,
... is there a sticky somewhere about rewinding them? I took
mine off back in the spring because the rope pulled out and
wouldn't go back in without taking it all apart .... yup, had to
rewind and seat the spring. Untied the rope at the pull handle
and restrung it. I don't know how tight to wrap the spring for
proper recoil and it still locks with the cord pulled. It's
getting to be a royal PITA having to remove it and rewind it
every time it decides to do this. I have even found the rope
between the recoil and flywheel.
Also, this manual recommends 40:1 fuel mix, is this acceptable
or, should I go with like, 32:1?
*****************************************************
DIR Next Page