Author Topic: Jonsered 630 super  (Read 2823 times)

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Offline jodal666

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Jonsered 630 super
« on: September 07, 2012, 04:12:34 pm »
Hi All,
first post her and urgently need a bit of help.
I have a Jonsered 630 super that was working perfectly the last time I used it, (about 6 months ago).
Tried to start it, would not fire. changed the spark plug, still wont fire. took plug out to check for spark whilst connected to HT lead. NO spark.
Took to a local chainsaw shop. They phoned they phoned me with the estimate 200 requires 2 HT coils. I'm not sure I beleive this is the fault.I think they want to sell me a new chainsaw. I decided to take the saw home telling the shop I'd think about it. I noticed there were 2 loose/disconected/broken wires under the air filter. 1 black wire which comes from the hot cold climate switch which goes where possibly to inside the handle as its only 3" long??.   At home I decide strip the saw down. The blue wire seems to run from a connector top left of the flywheel under the recoil starter? The question is where should the other end of the blue wire go? Carry handle??
After taking the handle off there is a blue cable tucked inside the black plastic covering the handle. The end of another bloken blue cable  just sticking out fron the plastic which then goes to handle throttle switch.
Next question. Some of these cables have worn through to the copper.if the copper was shorting to the metal case I'm assuming this woulg kill the spark?

I hope some / all of the above makes sense.

many thanks
Jodal666

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Offline Cut4fun .

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Re: Jonsered 630 super
« Reply #1 on: September 07, 2012, 04:18:48 pm »
Welcome. 

I dont know if this will help or not.  630 IPL has wiring diagram.  http://s30387.gridserver.com/partsDiagrams/Jonsered%20630.pdf
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Offline jodal666

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Re: Jonsered 630 super
« Reply #2 on: September 07, 2012, 05:10:00 pm »
Thanks for the PDF link. Although it does not show the actual cabling. Especially the location of the blue wire. where where the hell it should go  :(
I don't understand why it would go the the carry handle then on to the throttle switch assembly.

Any idea of what the resistance reading should be across the HT coil??

many thanks
Jodal66


Offline Cut4fun .

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Re: Jonsered 630 super
« Reply #3 on: September 07, 2012, 05:16:15 pm »
some info I dug up from 2010 on a small engine spot.


jonsered 630 chainsaw no spark


R. A neighbour brought by this unit saying no spark. I have the same result. I tried with the kill wire off the kill switch as well. Took cover off and it has 2 part electronic ignition. One side of flywheel has a magnetic pickup. It has 2 wires, one is the kill wire going to on/off switch and the other goes to coil unit with spark plug lead on the other side. Can't find anything online to help me. Any test procedures to checkout which component may be bad? Any IPL available to get part numbers? Thanks


G. Take a close look at the coil wire, make sure it is not broken inside the cover someplace, pull on it in places to check. Also look for bare spots. Remove the switch wire completely to test again, be sure and not pinch the coil wire when putting back together. Sometimes a pinched wire, bare wire or loose connection of the coil wire can be the problem. Look at the plug wire as well as the boot end with spring wire for plug connection. If all of this checks out the most likely problem is the trigger unit next to the flywheel. Sorry I do not have an IPL availible for that model. You might find one looking online.


   


R . Checked all the wiring and it seems ok. Definitely not the kill switch as the tab broke off and I removed it. I get about 1400 ohms on the plug lead to ground and 4 ohms on the trigger leads. I got an IPL and part number for the trigger and coil. Trigger is pricey, found it for $138 US. Ironically it the dealer has it, I found one right here in Ontario , for $84.

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Offline jodal666

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Re: Jonsered 630 super
« Reply #5 on: September 07, 2012, 06:45:33 pm »
Thanks for the links.  Looks exactly what I'm looking for.
Downloaded the service manual. I think I now what wires go to the heating system and can bypass all of that. I'll check for short / damaged cables and  the kill switch first. then the trigger unit spacing 0.3mm. just incase its moved..
If i disconnect the kill switch. That would be equivilent to have the switch open circuit and i should get a spark? if the trigger unit is good.

many thanks
Jodal666

Offline 660magnum

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Re: Jonsered 630 super
« Reply #6 on: September 07, 2012, 09:04:34 pm »
The chainsaw should run perfect without the kill switch wires but the only way to shut it off would be with the choke.
We should share what we know... someone may learn...
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Offline jodal666

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Re: Jonsered 630 super
« Reply #7 on: September 08, 2012, 02:31:01 pm »
Hi All,

Todays update:
Ok, so this morning bypassed all the handle heater wiring. Don't have to worry about that anymore..
Removerd start/kill switch. Althougth measures ok with a meter. still no spark.
wiring looks ok from trigger unit to HT spark unit. Measures 5.5 ohms from the 2 magnet heads to the end of the kill switch wire. A 40-50 Millivolts output when rotating flywheel as magnet pass trigger unit.
Measured HT spark unit reading infinite / open circuitfrom yellow or black lead to spark plug cap.
Any idea what readingi should get across the HT spark coil?

many thanks
Jodal666

Offline 660magnum

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Re: Jonsered 630 super
« Reply #8 on: September 08, 2012, 04:10:57 pm »
The ohms of the HT outlet at the coil is usually check to the case ground
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 jodal666

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Re: Jonsered 630 super
« Reply #9 on: September 08, 2012, 04:38:34 pm »
Just run out and measured the spark plug cap toy the chassis
reads infinite/ open circuit.
looks like the HT coil needs to be replaced :(

I might cut it open, just to have a look, you never know.ane encase in resin if it can be fixed.
Anyone know of a source for this part?

regards
Jodal666

 

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