What are the timing specs on a Husqvarna 36-r string trimmer

This may be one of those situations where specifically applied brute force may be appropriate.

Here is a link that could be of assistance.
http://www.ereplacementparts.com/husqvarna-223r-200601-brushcutter-parts-c-114486_203804_203831.html

buy new ones and replace one at a time, HUSQVARNA 128LD

Fuel Line Fitting PART NUMBER: 530023877


128LD HUSQVARNA TRIMMER Manual

This string trimmer will use .080 trimmer line

unplug the kill wire and then check

Are you getting a spark..? - NO? check wiring loom from ignition module, check timing gap between flywheel and ignition module, check on/off switch.
Does it have compression.? - NO? then check piston/rings and cylinder
Is fuel getting to the cylinder.? - NO? Carb problem of fuel line issue

Did u put it back proper?

I'll send you a link to the online manual.

Check ignition module timing, and fuel line for air leaks

Check the spacing gap between the ignition module and the flywheel.. this alters the timing of the machine

Remove spark plug from the engine, reconnect it to the plug cap cable which come from the bobin.

Find a piece of steel wire jumper, atleast a foot. Make a jump from the metal body of the plug to the chassis of the engine.

Safety issue: Place the plug away from the spark plug's hole on top of the engine to avoid gas ignite.

Set the trimmer on the floor, set the gap of the spark where visibility while you pull the string.

Pull the start string and the arc could be seen right on the plug gap. Consider an Arc Purple or Blue coloration are good.

If the arc has not been seen, the Magneto need to be serviced.