mtt.tr
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- Essex/Suffolk border
That hole / slot are your impulse.
If you have some inner tube put it between the carb and the manifold the bolt it down
Here is the correct adapter
Don't forget the test under pressure and vacuum, also recommend turning the crank whilst under pressure or vacuum see if an a leak is created.
Once completed and everything back together measure the compression.
For setting up I highly recommend a tacho ( I do occasionally do mine by ear but always have them a bit rich until I can be sure with a tacho)
I use these,
The pickup wire I have wrapped up as a coil that I slip over the spark lead, will photograph tomorrow.
If you have some inner tube put it between the carb and the manifold the bolt it down
Here is the correct adapter
Pressure Testing Plug M10 for Husqvarna 336, 543XP Chainsaws - OEM No. 503 84 40-03
Pressure Testing Plug M10 Genuine Husqvarna Part. OEM No. 503 84 40-03. Suitable for the Following Applications: 550, 560, 576, 543XP, 543R, 553R, (243R, 253R), 535, 336
www.lsengineers.co.uk
Don't forget the test under pressure and vacuum, also recommend turning the crank whilst under pressure or vacuum see if an a leak is created.
Once completed and everything back together measure the compression.
For setting up I highly recommend a tacho ( I do occasionally do mine by ear but always have them a bit rich until I can be sure with a tacho)
I use these,
Waterproof Digital Tachometer Tach Hour Meter Motor ATV Engine Inductive Gauge | eBay
Inductive design: You just need to tie the cable to the for spark plugs. Accuracy: 1 Minute or 10 RPM, Quartz. Show engine rpm and record hours of operation. Works on all spark ignition engines by selecting engine type using S1 and S2 buttons.
www.ebay.co.uk
The pickup wire I have wrapped up as a coil that I slip over the spark lead, will photograph tomorrow.