B
130
Repair and Service Manual
FAULT TESTING
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
699322
REPEATED SPARK PLUG
FOULING
Wrong spark plug type
Replace with correct spark plug
Wrong spark plug gap
Check and adjust if required
Excessive ring blow by
Check/replace rings
Poor quality gasoline
Use correct fuel, check bulk storage tank
for proper storage and handling
Air leak allowing dirt to enter system
Repair
Wrong main jet for conditions (high altitude
operations)
Replace with correct altitude jet for
conditions
FLOODED ENGINE
Fuel contamination
Clean fuel system
Clogged air filter element
Clean or replace
EXCESSIVE SMOKING
Wrong oil weight
Replace with recommended oil
Dirty oil
Change
Crankcase overfilled with oil
Drain and fill to recommended level
Clogged PCV valve
Replace
Piston rings worn or broken
Replace
Valves worn
Replace
Valve seals or valve guides worn
Replace
BACKFIRING
Accelerator limit switch out of adjustment
Adjust
Loose muffler or leaking gasket
Repair
Throttle lever motion restricted
Repair
Throttle lever not closing fully
Adjust
Throttle stop preventing throttle from clos-
ing fully
Adjust
Incorrect adjustment of accelerator,
governor and linkages
Adjust
Throttle lever shaft bent
Replace
Faulty plug wire
Replace
Condition
Possible Cause
Correction
Содержание LS2 2020
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