Husqvarna 450 - Manual (Page 10)

10
Engine Oil
Checking, Adding and Changing Oil
Check the engine oil level (B) daily with saw fully lowered and
the engine level. See the enclosed Robin manual for more
details.
Use SAE 10W-30 viscosity detergent automotive type with API
service class SE or higher grade oil.
Note: Engine holds approximately 0.6 quart (0.6 liter) when
changing.
Changing the Oil
Change oil after the first 5 to 8 hours of use.
Thereafter every 50 hours.
MAINTENANCE
The oil drain hose (A) is located at the rear of the saw.
1. With the engine OFF but still warm, remove the brass cap
and drain the oil in a pan.
2. Replace the brass cap on the oil drain hose.
3. Fill the engine at the oil fill cap (B) with 0.6 quart (0.6 liter) of
oil. When full, the oil level should be at the high level mark on
the dipstick or to the top of the threads on the engine fill hole.
The engine is equipped with an oil alert system that will stop
the engine if the oil level is low.
NOTICE
Used oil is a hazardous waste product. Dispose of
used oil properly. Do not discard with household
waste. Check with your local authorities, service
center, or dealer for safe disposal/recycling facility.
ADDITIONAL ENGINE INFORMATION
Please see the Robin Operator’s Manual for additional
information about servicing the engine.
The manual also has specific information about specifications,
tune-up parts, engine warranty, emission compliance, etc.
C
B
Air filter
The air cleaner assembly (C) is a cyclone type that can be
accessed from the hood on the saw. The air cleaner element
should be replaced every 50 hours. Refer to the supplied en-
gine manual and the “Cyclone Dual-Filter-Element Type” for
additional information.
Guards
Check all guards for damage and proper function daily espe-
cially the blade block. Blade block and cover should be secure
to the saw and not damaged. Lexan side covers on the blade
block should move freely up and down.
Diamond blade
Inspect diamond blades daily for damage, cracks, secure fit
to the arbor, loss of segments, warping or overheating. If any
blade shows any of these problems, discard the blade and
never use.
Saw controls
Inspect all controls for proper function daily. Check all the in-
terlocks for operation especially the engine on/off switch
for proper operation.
Belt
Inspect the blade drive belt for cracks or signs of wear. The
belt tension is controlled by belt tensioner and does not require
adjustment. Inspect the belt tensioner for free movement up
and down. Insure the belt tensioner bearings roll freely.
Blade shaft bearings
Lubricate the blade shaft bearings with 3 pumps of Lithium 12
based grease every 50 hours.
MAINTENANCE SCHEDULE
Check guarding, diamond blade, Daily
skid plate, lexan covers, controls and oil levels.
Clean blade block assembly and saw. Daily
Replace air cleaner. Every 50 hours
Replace engine oil. Every 50 hours
Grease blade shaft bearings. Every 50 hours
Check blade drive belt and belt tensioner. Every 50 hours
Cleaning
Clean the blade block of any excess concrete build up after
each use. Keep the handle bar and controls clean and dry. Im-
mediately clean any spilled fuel from the saw. Keep all open-
ings and slot on the engine shrouding on the saw clean and
open so air flows freely through the engine to insure proper
cooling.
WARNING
Do not modify the saw! Use only Husqvarna Construc-
tion Products replacement parts. Use of unauthorized
parts may create a danger or damage the engine.
Skid plate
Inspect the skid plate daily for damage, excessive wear in the
blade slot, burrs on the concrete surface side, twisting and free
movement up and down when installed on the blade block.
Replace the skid plate with each new diamond blade. Never
reuse the skid plates or spalling and raveling may result.
A