Author Topic: PM 605 hard starter?  (Read 2181 times)

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Offline Rich73Kelly

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Re: PM 605 hard starter?
« on: September 14, 2015, 04:04:05 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?
If we can't fix it, IT ain't broke!

 

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