The Briggs and Stratton Pulsa Jet carburetor regularise fuel flow on the aluminum series of engines . The most common practical program of this carburetor is for small horsepower lawn mower and rototillers . The Pulsa Jet carburettor resides above the on - board petrol tank . Fuel is drawn up into the gadget through two fuel sucking lines . A individual needle valveresides near the rear of the carburetor unit of measurement , that look the push handles of the lawn mower or rototiller . The needle valve has a slot - type nookie nous .
Step 1
shut the needle valve with the screwdriver in a clockwise direction .
Step 2
start the phonograph needle valve 1 1/2 turns in a replication - clockwise counsel . This circumstance allows the locomotive engine to be started and warmed to operation temperature . Keep the air filter in place for correct adjustment .
Step 3
Start the engine according to the manufacturing business ’s instructions for the equipment . Accelerate the locomotive to useable speed .
Step 4
wrench the phonograph needle valve in a clockwise direction , close it , until the engine begins to lose fastness . Slowly back the needle valve out , counter - clockwise focal point , until the engine smooths out .
Step 5
Test the engine under a full - load condition . Mow sens with the lawn mower or naturalize ground with the rototiller . rick the needle valve slightly in a buffet - clockwise direction if the locomotive loses speed while under full - payload conditions . It may take several nonaged adjustments to the acerate leaf valve for get the safe execution from the engine .
Adjust A Walbro Carburetor
Walbro carburettor are almost standard on most all two - cycle engines . readjustment of the carburetor may have to be performed on a occasional footing and most decidedly after the bare machine is rebuilt . key out the two - fuel fitting screws on the side of the alloy carburettor . The " lo " fuel screw is for when the engine is idling . Start the two - cycle engine . Allow the engine to return to an idle cognitive operation by turn the throttle . At idle the locomotive engine should be run smoothly . apace depress the throttle again .
Tip
Use only unused gasolene in the engine when performing the above adjustment as former gas will cause the engine to operate on unpredictably . If the gimmick fails to adjust decently after following the above stair , the two fuel suction lines may be clogged . There are small screens in the final stage of both plastic tubing . The carburetor must be withdraw from the fuel tankful and the lines or screen cleaned .
