4.23
76347-282 • 12- 08
122º
104º
86º
68º
50º
32º
14º
-4º
50º
40º
30º
20º
10º
0º
-10º
-20º
-30º
-40º
-55º
Single
Viscosity
Air
Temperature
ºC
ºF
Multi
Viscosity
SAE 40
SAE 30
SAE 10W
SAE 20W40
SW20
SAE 15W40
SAE 15W30
SAE 10W20
Arctic oil
Engine
WARNING
Wood dust and chipping material in the engine area may
ignite and result in fire, burns, or serious injury. Clean
the engine area before operation of the machine and
when excessive material build-up occurs. Do not clean
the engine area with the engine running!
Sparks can occur if blade strikes rocks, metal, or other hard objects.
Do not use in high/very high fire hazard severity zones. Operation of
this equipment may create sparks that can start fires around dry
vegetation.
A Spark Arrestor may be required. The operator should contact local
fire agencies for laws or regulations relating to fire prevention
requirements.
Refer to the engines OEM manual for specific maintenance guidelines and
procedures. Failure to follow the engine OEM guidelines and procedures
may result in a void of the engine OEM warranty.
The engine area should be cleaned before every use and if there is
excessive material build-up (wood dust, chips) during operation. Always
turn the engine OFF before cleaning the engine area.
Engine Oil
Refer to the engine OEM manual for drain intervals. Quality engine oils
are blended so additives are neither required or recommended. Match
the choice of oil viscosity to the air temperature the chipper will be
operating in (see Chart 4.1). Use only premium engine oils that meet
OEM performance requirements.
Spark Arrestor
It may be illegal to operate this machine without an approved spark
arrestor!
Many localities require spark arrestors on naturally aspirated engines to
reduce the risk of fire when working in areas where combustible vegetation
exists. If you are unsure about the regulations in your area, check with local
fire agencies before beginning work. Your Morbark dealer can provide infor-
mation about a spark arrestor suitable for use with the power unit installed
in this machine.
Chart 4.1 Oil Viscosity
General Maintenance • Engine
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