Small Engines (Lawn Mowers, etc.): Impulse Hose cleaning and/or repair, piston rings, piston ring

Question
I have a Husqvarna 359 that bogs down in a cut.  I have read that it could be the impulse hose.  Can you tell me if I can clean out the hose or do I need to replace it?  I will not run well unless it is really warm out.

Answer
Larry

here are some possibility's

Problem: Engine lacks power (possibly after warmup).
Possible causes:

  1. Old gas, bad spark plug, very thick/dirty oil.
  2. Choke is partially closed.
  3. Carburetor needs adjustment or service.
  4. Ignition not timed correctly.
  5. Air filter is clogged.
  6. There is a lack of lubrication.
  7. Valves are not sealing properly.
  8. Piston rings are not sealing properly.
  9. Head loose or head gasket blown or damaged.
Also

Possible causes:

  1. Too much oil in crankcase.
  2. Engine speed is excessive.
  3. Oil fill cap or gasket is damaged or missing.
  4. Breather mechanism is dirty or defective.
  5. Piston ring gaps are aligned.
  6. Piston rings are worn.