10
Troubleshooting
1
2
Problem/Symptom Potential Cause Corrective Action
①
Air leak near top of tool /
Sluggish operation
Firing valve seal Verify air supply / Tighten screws
or install repair kit YK0444
②
Air leak near bottom of tool /
Poor return
Piston stop/Piston seal Check for piston seal or sleeve
wear
If parts are worn or damaged,
parts are detailed in the parts
chart
Clean tool / Tighten screws or
install repair kit YK0445
Safety does depress fully, tool does
not operate
Check safety. If unable to free
up, return tool to an authorized
dealer for service
Remove and inspect safety. Clean
and lubricate track with SENCO
oil
Replace safety
Position follower behind fasten-
ers
Other problems Contact SENCO
Accessories
SENCO offers a full line of accessories for your SENCO tools, including:
• Air Compressors
• Hose
• Couplers
• Fittings
• Safety Glasses
• Pressure Gauges
• Lubricants
• Regulators
• Filters