RedMax PSZ2450S - Manual (Page 14)

Maintenance, replacement, or repair of the emission control device and systems may be performed by any
non-road engine repair establishment or individual.
US-14
PSZ2450S
■ OILING PORT
Dismount the guide bar and check the
oiling port for clogging. (MA1)
(1) Oiling port
■ GUIDE BAR
Remove sawdust in the bar groove and
the oiling port. (MA2)
(1) Groove
(2) Oiling port
(Type: Sprocket nose)
Grease the nose sprocket from the
feeding port on the tip of the bar. (MA3)
(1) Grease port
(2) Sprocket
■ OTHERS
Check for fuel leakage and loose
fastenings or damage to major parts,
especially housing joints and guide bar
mounting. If any defects are found, make
sure to have them repaired before
operating again.
■ SPROCKET
Check for extensive wear, and replace it
when the teeth are worn over 0.3mm.
(MA4)
(1) Sprocket
■ GUIDE BAR
The bar rail should always be a square.
Check for wear of the bar rail. Apply a
ruler to the bar and the outside of a cutter.
If a gap is observed between them, the
rail is normal. Otherwise, the bar rail is
worn. Such a bar needs to be corrected or
replaced.(MA5)
(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts
9. Maintenance
Every Every Every
25 50 100
System/compornent Procedure Before hours hours hours note
use after after after
fuel leaks, fuel spillage wipe out ✔
fuel tank, air filter, fuel filter inspect/clean ✔ ✔ replace, if necessary
see ■ADJUSTING replace carburetor
idle adjusting screw ✔
IDLING SPEED (p.13) if necessary
clean and readjust GAP: .025in(0.6~0.7 mm)
spark plug ✔
electrode gap replace, if necessary
cylinder fins, intake air cooling vent clean ✔
muffler, spark arrester, clean,
✔
cylinder exhaust port remove piled up carbon
throttle lever, ignition switch check operation ✔
gear case grease ✔
screws/nuts/bolts tighten/replace ✔ ✔ not adjusting screws
oiling port clean ✔
guide bar clean ✔
sprocket inspect/replace ✔
saw chain inspect/replace ✔
ENGINE
SHAFT
CUTTING UNIT
■ MAINTENANCE CHART
(1)
MA1
MA2
MA3
MA4
MA5