42-Inch Steel Deck 17.5 HP Briggs & Stratton I/C Engine With…

Mower runs fine until i try to run in 4,5, or 6 gear then it will surge and disengage.

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When surging or inconsistent power occurs in your generator, fuel could be the cause. Should you experience this, checking fuel levels can be a great first step, but your dealer or service provider can check all fuel system components preventatively.
If your lawnmower`s engine is surging it could be a problem with the carburetor. The carburetor mixes air and fuel to the perfect ratio for combustion. There are passages and nozzles (called jets) that route the fuel through the carburetor. The jets meter the precise amount of fuel that is needed for combustion.
Lawn mower surging is a result of either bad gas or spark plug, dirty air filter, or clogged gas cap vent. A dirty carburetor jet and fuel filter might also be the reason. You can also consider a carburetor gasket leak, which can be fixed by an engine starter spray.
When a spark plug becomes fouled, the tips become coated with fuel, carbon, oil or dirt. This interference limits the ignition power needed for mowing on level or uphill surfaces. Maintain your spark plugs by changing them every season or regularly removing and cleaning the tips.
A pulley that is binding will cause the lawn tractor to jerk forward. To check for a binding pulley, start by disconnecting your battery, and remember to start with the negative cable first. Now you can remove your mower deck. Remove your drive belt and check the inside condition of the pulleys.
Among the potential underlying causes are vacuum leaks, EGR system malfunctions, malfunctioning oxygen sensors, dirty fuel injectors, fuel pump malfunction, faulty spark plugs, a faulty mass airflow sensor, or a faulty throttle position sensor.
Surging and Lagging

Another good indication that your spark plugs are dirty or worn is if your vehicle experiences surges of speed, resulting in a jerking acceleration. These surges occur because your spark plugs are not igniting the fuel in your engine at the proper rate, resulting in an uneven speed.

There are several reasons that surging occurs. A restriction to flow or fouling in the air/gas system is one possible factor. This could be caused by a dirty charge air cooler, or dirt or contamination on a nozzle ring, for example.
The problem may involve an annoying change (up/down) of engine speed while cruising at a steady pace, a low drop (or even cut-out) at idle or when approaching a stop, a wild high engine speed of several thousand rpm followed by a drop to near zero, etc.
Check the Battery

The battery is the next stop when investigating a slow cranking mower. A weak battery cannot sustain enough charge to spin the starter mower and turn the mower`s crankshaft. Mower batteries last around four years, so one that is older may be ready for replacement.

Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
Surge protectors serve as a source between direct power from your utility and your home`s electronics. By having a surge protector between your home and generator, you are able to stay assured that in the event of a storm your home`s power is protected.
They can be caused by changes in the load demand, faults, switching operations, or external disturbances. Voltage fluctuations can affect the power quality, the efficiency, and the lifespan of the generator and the connected equipment.
Surging and Lagging

Another good indication that your spark plugs are dirty or worn is if your vehicle experiences surges of speed, resulting in a jerking acceleration. These surges occur because your spark plugs are not igniting the fuel in your engine at the proper rate, resulting in an uneven speed.

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Hard to shifet my poulan pro and wont go into reverse
ANSWER : Try loosening the belt tension to the transmission a little bit. Some of these are just stiff and you have to slip the clutch a little to rock them into gear.

I would like to go down A bar size our two on my poulan wildthing
ANSWER : I have a Poulan Pro 295 20″.  When I bought it I also bought a 16″bar and chain and have been using those since.  They make the saw much easier to handle and are a better match to the available power.
The key dimension is from the bar’s mounting hole to its end.  At the store look at the normal replacement bar for your 18″ saw, and pick out a 16″ or even 14″ bar with the same dimensions there.  This can be easily seen by laying one bar over the other.

No owners manual was in the box – Poulan Pro Chain Saw 46cc 20"
ANSWER : Did you contact the store where you purchased it? That would be first step.

Poulan.com
Handheld (Chainsaws, Trimmers, Blowers, Edgers)1 (800) 554-6723 or
http://www.poulanpro.com/node4033.aspx
There is currently no where to download an Operator’s Manual. HTH
Lou

My blower chugs while running. It idles fine but when the trigger is pulled it revs up to normal top speed then dies out and surges like this continuously. I have taken the blower a part and cleaned out the carburetor completely. Any tips would be helpful. Thanks!
ANSWER : Hi, Check the hose that supplies the carb with fuel. Sometimes even a small pinhole can cause this type of malfunction.
Good luck.

Can you adjust the oil pump – Poulan Pro 42CC 2 Cycle Chainsaw, 18"
ANSWER : Depends on the saw. If it is adjustable then it will be adjusted from the bottom of the saw. Most have a diagram on the bottom showing which direction to turn the screw

How do I replace the fuel line for a Poulan ppbp30?
ANSWER : Open the top of the machine to access the carb, Normally it is easily done with needle nose pliers.

Is it straight gas or mixed? – Poulan Pro 14" Gas Chainsaw 33CC P3314
ANSWER : It uses a gas/oil mix. 40:1Hope this helps.

Poulan pro 42 cc, no spark – Poulan Pro 42CC 2 Cycle Chainsaw, 18"
ANSWER : Try diss connecting the earth cut out wire from the ignition unit and try for a spark again, this will rule out the switch and any trapped wires, re set the air gap between the unit and the flywheel to 0.3mm, if there is still no spark the unit is bad and will require replacment, they are normally only held on with a couple of allen screws, and either bolted to the cylinder or the crankcase.