Polaris Sportsman 400 Service Manual page 170

FUEL SYSTEM/CARBURETION
TROUBLESHOOTING, CONT.
Idle Too Low
S Choke cable bending or incorrectly adjusted
S
Idle speed set incorrectly
S Idle mixture screw misadjusted or damaged
S
Belt dragging
S
Ignition timing incorrect
S
Worn jet needle/needle jet
Erratic Idle
S
Choke cable bending or incorrectly adjusted
S Throttle cable incorrectly adjusted
S Air leaks, dirty carburetor passages (pilot circuit)
S Pilot mixture screw damaged or adjusted incorrectly
S
Tight valves
S Ignition timing incorrect
S Belt dragging
S
Dirty air cleaner
S Engine worn
S
Spark plug fouled
S Idle speed set incorrectly (speed limiter)
S Worn jet needle/needle jet
4.20
- projex@inbox.lv -