Ryobi RLT254CDSO Manuel D'utilisation page 29

Problem
Engine starts, runs, and
accelerates but will not idle.
Line will not advance.
Grass wraps round shaft
housing and string head.
Bump knob hard to turn.
Lubricant drips from muffl er.
English (Original instructions)
Possible cause
Idle speed screw on
carburetor requires
adjustment.
Line welded to itself.
Not enough line on spool.
Line worn too short.
Line tangled on spool.
Engine speed too slow.
Cutting tall grass at ground
level.
Operating the product at
partial throttle.
Screw threads dirty
damaged.
Operating unit at partial
throttle.
Check lubricant fuel mixture.
Air fi lter dirty.
27
Solution
Contact a servicing dealer.
Lubricate with silicone spray.
Install more line.
Refer to "Line Replacement" earlier
in this manual.
Pull lines while alternately pressing down on and
releasing bump head.
Remove line from spool and rewind. Refer to "Line
Replacement" earlier in this manual.
Advance line at full throttle.
Cut tall grass from the top down.
Always operate the product at full throttle.
or Clean threads and lubricate with grease - if no
improvement, replace bump knob.
Always operate the product at full throttle.
Use fresh fuel and the correct 2-stroke lubricant mix
ratio.
Clean air fi lter. Refer to "Maintenance – cleaning the
air fi lter" earlier in this manual.