Specifications

18
Maintenance...
3. Locate the piston removal rod (G), screw the
threaded end into centre of the piston (b) and
remove the piston assembly. (See figs 37-38)
4. Clean the combustion chamber with
de-greaser and wipe with a dry cloth.
5. Clean the piston with de-greaser and check for
signs of wear and tear at the end of the firing
pin.
Note: The firing pin should have a flat edge.
If there is signs of burring to the edges or
small cracks emerging, the piston assembly
will need to be replaces. Contact our Technical
Sales department on 0330 100 0299 for a
replacement.
7. Clean the spark plug electrode with a small
brush. (See fig 34)
8. Press down the piston and clean the
combustion chamber with de-greaser and
wipe with a dry cloth. (See fig 35)
9. Replace the cylinder head assembly as
described on the previous page but in reverse.
1. Remove the cylinder head as described on the
previous page.
2. Press down the piston, remove the circlip (a)
with a pare of pliers and clean with de-greaser.
(See fig 36)
6. After cleaning the piston (b), re-insert the
assembly into the combustion chamber, replace
the circlip and reassemble the cylinder head as
described on the previous page.
If you find the nails are not being fired into the
workpiece properly the exhaust vents may need
cleaning.
Fig 34
Fig 35
Fig 36
Fig 37
Fig 38
After 50,000 cycles the following service
procedures should be carried out
a
G
b
After 100,000 cycles the following service
procedures should be carried out
Cleaning the exhaust vents
Cleaning the piston chamber