Troubleshooting - Bushranger 46TBU6 Owner's Manual

Troubleshooting

In small engines generally, difficult starting and erratic running is most often caused by a
dirty spark plug. If a new spark plug of the correct type does not restore the engine to
proper operating condition, the problem may be solved by reference to the chart below.
Problem
Does not start
Loss of Power
Poor cutting
Excessive vibrations
Engine stops
frequently
If running difficulties continue, contact your closest Bushranger Authorised Service Centre
as listed in the back of this manual.
10
Possible cause
Out of fuel
Throttle lever in incorrect position
Spark plug lead not connected
Engine flooded
Dirty spark plug
Stale fuel in tank from last season
Water in fuel tank
Service required
Engine worn
Low or no oil (4 stroke)
Incorrect throttle setting
Dirty air filter element
Too low height adjustment
Low or no oil (4 stroke)
Blades worn or damaged
Blade disc loose
Slow running
Blades restricted by grass and dirt
accumulated under the baseplate
Build up of grass and dirt on upper
surface of blade disc
Blades out of balance
Bent or damaged disc or blade
Looseness of assembly
Low or no oil (4 stroke)
Fuel supply blocked
Engine worn or seized
Fuel cap not venting
Low or no oil (4 stroke)
Correction
Refill tank with correct fuel
Refer to 'Starting Procedures'
Press terminal cover fully onto
the spark plug
Turn fuel tap 'OFF'. Pull starter cord
until engine starts, then turn fuel
tap 'ON'
Replace spark plug
Empty and refill with clean fuel, if it does not
work contact Service Centre.
Empty and refill with clean fuel, if it does not
work contact Service Centre.
Contact Service Centre
Contact Service Centre
Check
Set throttle lever in the 'RUN' position
Clean or replace
Raise cutting height
Check
Replace
Contact Service Centre
Refer to 'Loss of Power' above
Remove spark plug lead and clean
under the baseplate
Remove spark plug lead & clean blade disc
Replace both blades
Replace disc or both blades
Check all nuts for tightness
Check
Check fuel line
Contact Service Centre
Check / Loosen cap slightly
Check