76347-385 • 06 -15
4.22
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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