Question about Garden
hi there winger1886
with 20/122 the blade timming must with one blade vertical and one blade horizontal
doesnt matter which one but as long as there is 90 degrees between blade as the rotate
in the picture the r/h blade rotates anticlockwise and the l/h blade rotates clockwise
the picture for belt / blade timming is straight forward - loosen tensioner rod and back it off completely , loosen 2 x bolts under the two toothed pulleys and remove the 2 belt guide/ stoppers from the l/h side - place both blades in the rqd position ( you may need someone to hold other blade in rqd position - fit the belt onto pulleys as in the diagram- continually check while fitting that timming has not moved from where you placed them ( they have to be 90 degrees from each other ) and then tighten the tensioner rod to hold position - rotate by hand recheck timming - if good loosly fit guide the 2 guide stoppers to l/h side and place 3.5 kg of tension at the middle point of the longest run of timmed belt ( belt should only deflect 10 mm with 3.5 kg of tension )
once tensioned tighten the 2 bolts under the toothed pulleys and tighten loc nut on adjuster
tighten the 2 stopper / guide nuts
in the picture the left hand blade is a l/h thread undo it right and tighten it left
the blade on the right is a normal thread left loose - righty -tighty
cheers hope it helps
Posted on May 23, 2011
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Posted on Jan 02, 2017
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