Installation of Throttle Valve Plunger Bushing (7)
in Handle (For Series 1, 2, 3, 4 and Series W1, W2,
W3 and W4 Chipping Hammers with first two
letters of serial number SA through SP)
1. Slide the new Throttle Valve Plunger Bushing (7) over
a plunger bushing arbor and insert it into the Handle
through the threaded opening at the base of the grip.
Trouble
Sluggish operation
Loss of power
Loss of efficiency
MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Probable Cause
Dirt or oil gum accumulation on
internal parts
Worn Valve
Worn Piston and/or accessory
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.
2.
Press in the Bushing until its trailing face is 1–21/32"
(42.06 mm) below the face of the throttle valve cap
boss on the Handle.
3.
Using a plunger bushing reamer guide and a throttle
valve plunger bushing Reamer, ream the Throttle
Valve Plunger Bushing to size.
Pour about 3 cc of a clean, suitable, cleaning
solution into the air inlet and operate for
30 seconds. After flushing, pour about 3 cc of oil
into the air inlet and operate the tool for 5 seconds
to coat the internal parts with oil.
Replace the Valve.
Replace Piston and or accessory.
23
Solution