© STIHL Inc., Virginia Beach, VA     2013 US/STR
confidential
Hose Removal
 The 5910 890 4501 tool also works well to remove fuel, 
impulse, or vent hoses
 Use a side to side rocking 
motion while pushing against 
the hose to walk it off of the 
fitting
© STIHL Inc., Virginia Beach, VA     2013 US/STR
confidential
11. Spark Plug Connection
 Use a twisting motion to remove the spark plug connection 
and be careful not to pull the clip out of the high tension 
lead
 Inspect it for damage, hardness or cracks