Question about Poulan Pro Chain Saw 46cc 20"
The carb screws are fuel screws, not air screws, gently turn them both in ( clockwise ) onto there seats, now back off the L screw 1 1/2 turns, back the H screw off 1 turn, you will have to fine tune from there, start the saw, increase the idle screw so it will idle if needed, start by screwing the L screw in, the revs will start to increase due to the weakening mixture, it will eventually start to die as it is too weak, so at this point start unscrewing the screw 1/4 turn, rev the saw, it should pick up smoothly, if not increase the L screw another bit turn until it revs smoothly, now set the idle screw so it runs 3000 rpm approx, the H screw is the govenor, the more you screw it in the higher the revs, the max rpm should be set with a taco to 12500rpm, do not exceed this or it may seize, before any adjustment, replace the filter in the fuel tank, use fresh fuel, and clean the air filter.
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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