Troubleshooting
TROUBLE SHOOTING
32
Problem Possible Causes Remedy
Motor starts, will not idle but runs at
high rpm.
> L Needle not set correctly > Adjust correctly
> Adjust correctly
> Chain drive links jammed by
pinched bar groove
> Replace bar and possible chain if
damaged
> L needle or H needle not set
correctly
> Adjust correctly
> Blocked exhaust port
> Adjust correctly
> Jammed chain > Free chain and adjust correctly
> Blocked exhaust port
> L needle or H needle not set
correctly
> Adjust correctly
> Rings and/or cylinder worn > To Test: remove starter assembly,
turn motor by hand clockwise and
/ cylinder - Replace
> Worn or damaged clutch > Replace clutch
> Motor idle adjustment too high > Adjust correctly
> Clutch drum bearing worn > Replace clutch drum
> Clutch springs broken > Replace clutch
> Clutch pads broken or worn > Replace clutch
> Depth gauge on chain is too high > Re-sharpen to correct depth
> Badly worn sprocket > Replace sprocket
> Re-sharpen correctly
> Badly stretched chain (6mm over
30mm - max)
> Replace chain
> Chain pitch and sprocket pitch do
not match
>Use only the correctly matched
chain and sprocket, replace
accordingly
> Guide bar rails worn unevenly > Resharpen or replace if excessive
ware has taken place
> Guide bar width has worn
excessively
> Replace bar
> Incorrectly set depth gauge >Re-sharpen to correct depth
>Re-sharpen to correct angles
> Chain tension to loose > Adjust tension accordingly
Motor starts, idles but will not
accelerate to full rpm.
Motor starts, idles and appears to
run well but lacks power.
move.
dishes to one side.
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