910500
– 4-Cycle Gas Power
Impact Wrench
Impact
Phone: (262) 637-9681
Email:
5.2022 Rev 1
Page
16
of
27
Section 3: Troubleshooting & Maintenance
Problem
Possible Cause
Remedy
Engine does not start.
Fuel System
Wet spark plugs due to too much
intake of fuel.
1.
Remove spark plug.
2.
Exhaust exceeded fuel by pulling
recoil starter handle 5-6 times.
3.
Install spark plug.
4.
Turn choke lever to open position
and pull recoil starter handle.
Bent or disconnection of fuel pipe.
Repair.
Insufficient pressing of priming pump
Press priming pump for several and
send the fuel.
Electrical System
Ignition stop switch in stop position.
Turn to the ON position.
No spark.
1.
Bad connection/Ignition coil.
2.
Incorrect air gap/Ignition coil.
3.
Bad ignition coil.
Short circuit of stop switch lead wire.
Repair or replace.
Dirty plug.
Clean up or replace.
Wider spark plug gap.
Adjust correct gap to 0.6 mm.
Poor connection of high voltage cord
in ignition with spark plug.
Correct connection.
Bad ignition coil.
Replace.
Engine stalls soon after
starting or stops.
Fuel System
Choke lever in closed position
Turn to open position.
Air goes through to fuel system
Check if cracks are found on pipe or
connector and pipe is securely fixed
Poor function of carburetor.
Air leak from carburetor.
Incorrect carburetor adjustment.
Bad diaphragm in carburetor.
Incorrect carburetor valve hinge height
adjustment.
Electrical System
Bad spark plug.
Replace.
Bad ignition coil.
Replace.
