.

Stihl Chainsaw Carburetor Troubleshooting Chart

« Stihl Chainsaw Troubleshooting GuideCarburetor Settings for a Stihl Chainsaw »


Stihl Carburetor Part Breakdown

START IDLE ACCELERATE High Speed
Hard Starting Fuel Leak At Carburetor Engine Floods Will not idle Rich Idle Idle with Needle Closed Hunts Erratic Idle idles Fast Lean Will not Accelerate Over Rich Acceleration Hesitates Will not run at high speeds low Power Hunts at high Speed Runs with needle closed Engine over Speeds
AIR SYSTEM PROBLEM
Plugged Air Filter ••• ••• ••• ••• ••• ••• •••
Leaky Carburetor Gasket ••• ••• ••• ••• •••
Throttle or Choke Shafts Worn ••• ••• ••• ••• ••• ••• •••
Choke Not Functioning Properly •••
Plugged Atmospheric Vent ••• •••
Air Bleed Restricted ••• ••• ••• ••• ••• ••• •••
Damaged or Leaky Rings ••• ••• ••• ••• •••
DIAPHRAGM SYSTEM PROBLEM
Damaged Diaphragm ••• ••• ••• ••• ••• •••
Stuck or Dirty Ball Check ••• ••• ••• ••• •••
Diaphragm Upside Down •••
FUEL SYSTEM PROBLEM
Plugged Tank Filter or Vent ••• ••• ••• ••• •••
Fuel Pick-up Restricted ••• ••• ••• ••• ••• ••• •••
Idle Port Restricted ••• •••
Damaged Adjustment Needles ••• ••• ••• ••• ••• ••• ••• ••• ••• ••• •••
Incorrect Float Height ••• ••• ••• ••• ••• •••
Main Nozzle Restricted ••• ••• ••• ••• ••• •••
Dirty, Stuck Needle and Seat ip ••• ••• ••• •••
Fuel Inlet Plugged ••• ••• ••• ••• •••
  • Mark Walton653

    my stihl ms 200t wont start borrowed it to a mate and it was set for winter use he ajusted carb and wont start whats the best way to set it up anyone thanks