Superabrasive
User Manual Original Language
Lavina® 30GEB
1/2021
24
8. TROUBLESHOOTING
8.1 ENGINE
When troubles occur, be
sure
to
check
the
simple
causes which at first, may seem too obvious to be considered. For
example, a starting problem could be caused by fuel starvation due to an empty propane cylinder or an unopened service
valve. If you do not check for this, starter burnout could result.
Some Troubles and
solutions: Surging idle
To smooth out the engines' idle characteristics, adjustment is provided by an idle screw on the lower left side of the
carburetor as viewed from the operator's position. The screw is bright steel and 1/4" in diameter with a Phillips head on it.
Rotating the screw clockwise will increase the idle speed and this should cure the "surging idle". If it does not, call our
customer service.
Engine starts and idles, but will quit as the throttle is advanced
It is possible that the propane tank's service valve is faulty. To check for this, close the valve completely and then reopen
very slowly while you listen for a "click" when the gas begins to travel through the valve. If you hear this very slight noise,
the valve is only partially opening. This allows enough gas through to start and idle the engine, but not enough for full
throttle operation. As the throttle is increased, allowing more air to enter the intake, the engine will quit from fuel
starvation. Call your dealer or the factory for instructions on where to have the service valve replaced. Meanwhile, to get
by, you can continue to open the service valve until you do not hear a “click" and then the engine will run normally. If it
does not, call your customer service.
Starter barely turns the engine over or the solenoid just clicks
The battery is likely low in charge. This can be remedied by recharging the battery using a 12 Volt battery charger at 4.12
amperes. The battery is located on the left side of the propane tank holder under the battery cover. The positive post is the
one with the RED cable attached to it. Follow the instructions that came with the battery charger. REMINDER: this will
continue to happen unless your engine is run for sufficient time between starts to recharge the battery.
OPERATION
INTERVAL
Daily
First
8
Hrs.
Every
50
Hrs.
Every
100
Hrs.
Every
200
Hrs.
Every
300
Hrs.
Every
400
Hrs.
Every
500
Hrs.
Check & add engine oil
X
Check for loose or lost fasteners
X
Check for oil leakage
X
Inspect fuel hose and connections
X
Clean engine dust filter
X
Inspect throttle & wire
X
Change engine oil
X
X
Change engine oil filter
X
X
Replace engine primary air filter
X
Replace engine pre filter
X
Inspect battery and battery connections
X
Inspect, clean & re-gap spark plugs,
Replace if necessary
Check & adjust valve clearance *
Re-torque heads *
X
Clean & lap valve seating surface *
X
Check engine emissions
X
Inspect power cords, plugs and vacuum
hoses, loose bolt or screws.
X
Check the rubber buffers, elastic
element and fixing of the holders
X
Inspect and clean the tool plate
connections
X
X
Inspect and clean water tank.
X
X
Inspect the seal rings and bearings of
the grinding units
X
Check the planetary chain and lubricate
X
X
Replace
Felt-Ring and V
‐
rings
X
Check belts and bearings
X
* Return machine to authorized service center for overall checkup of the Engine. For Propane safety, have
the machine serviced by a Certified Technician, including emission check.
Figure 71
Figure 71
