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Thumb and fingers.

Hold the spring down with your thumb at the holder opening and pic out the holder with something sharp. Release the thumb pressure slowly so the spring unwinds slowly

Long time, no post!. Apologies for my absence, had to mothball this to deal with other things. Determined to get back to it, and now the weather has released it's wintery/rainy grip, I've been busy making square brass nuts threaded 3/16" whitworth to secure the 3/4" thick mahogony planks. Finally made a decision on the last drive chain layout. Went for direct drive to the pump. 9 toothed gear on the pump side, so at 2,500 rpm at the engine, 500 rpm at the reduction gear output, gives me 550rpm pump speed. The tech data for the pump with the full cam fitted which I have, is 80 litres per minute at 1500rpm.So this set up will run at 29.3 litres per minute, a comfortable rate for my needs. it meant I had to offset the pump, but not a problem really, and the outlet (elbowed) side will clear the edge of the frame when in use. Here's how it turned out:- Hoping to give it a once-over to check everything is fuel tight, and will get it running without the pump on. I need to 'run it in', as it has a rebored cylinder and new rings to bed in. I'll need to:- Waterproof the Spark Plug and Lead on the head area with a cover, which will also act as an engine cut out. Make Chain Cover for the final drive and oil drip collection tray below it. Waterproof the Air Intake/choke (not urgent). I've made a pulling handle, but need some wood to make a grip for it. So I'm nearly at the completion point at last!. Regards.

Yes. Anything to hold the rope as long as it gets locked on the spool

The wire needs to be bent in such a way to feed both ends of the wire through the holes from inside of the spool out. The factory pieces resemble 1/2 a paper clip and the wire is kind of soft

With a little bit of fuel in the tank, connect a piece of fuel line to the nipple and blow into it. The one that bubbles the fuel is carb line.

The shape of tank. The line from one side to the other allows air to escape out the top. Otherwise the opposite side from the fill neck would just remain an air bubble on the top without it. So that line allows it to fill all the space so the tank holds more fuel