RedMax EXTREME EXZ2450S-PH Owner's/Operator's Manual page 26

EXZ2450S-PH
9. Maintenance
(PS-EX only)
■ OILING PORT
PS-EX MA1
Dismount the guide bar and check the
(1)
oiling port for clogging. (MA1)
(1) Oiling port
■ GUIDE BAR
PS-EX MA2
Remove sawdust in the bar groove and
the oiling port. (MA2)
(1) Groove
(2) Oiling port
PS-EX MA3
(Type: Sprocket nose)
Grease the nose sprocket from the
feeding port on the tip of the bar. (MA3)
(1) Grease port
(2) Sprocket
The bar rail should always be a square.
Check for wear of the bar rail. Apply a
PS-EX MA4
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.(MA4)
(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts
■ SPROCKET
PS-EX MA5
Check for extensive wear, and replace it
when the teeth are worn over 0.3mm.
(MA5)
(1) Sprocket
■ SAW CHAIN
It is very important for smooth and
safe operation to keep the cutters
always sharp.
Your cutters need to be sharpened when:
• Sawdust becomes powder-like.
• You need extra force to saw in.
• The cut way does not go straight.
• Vibration increases.
• Fuel consumption increases.
US-26
WARNING
Cutter setting standards:
PS-EX MA6
Be sure to wear safety gloves.
Before filing:
• Make sure the saw chain is held
securely.
• Make sure the engine is stopped.
• Use a round file of proper size for your
chain.
Chain type : 90SG
File size :
Place your file on the cutter and push
straight forward. Keep the file position as
illustrated. (MA6)
After every cutter has been set, check the
PS-EX MA7
depth gauge and file it to the proper level
as illustrated. (MA7)
Be sure to round off the front edge to
reduce the chance of kickback or tie-
strap breakage.
(1) Appropriate gauge checker
(2) Make the shoulder round
(3) Depth gauge standard
PS-EX MA8
Make sure every cutter has the same
length and edge angles as illustrated.
(MA8)
(4) Cutter length
(5) Filing angle
(6) Side plate angle
(7) Top plate cutting angle
■ GEAR CASE
The reduction gears are lubricated by
multipurpose, lithium-based grease in the
gearcase.
Supply new grease every 25 hours of use
PS-EX MA9
or more often depending on the job
condition.
When adding lubricant, use a grease gun
to insert lubricant into the three grease
nipples located on the gear case. (MA9)
(1) Grease fitting
WARNING
5/32 in (4.0mm)
WARNING